Browsing by Author "Ghaemi, Ferial"

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Citation Count: Khan, Asif;...et.al. (2022). "A survey study of the correlations developed for single-phase heat transfer and pressure drop using nanofluids", Journal of Thermal Analysis and Calorimetry, Vol.147, pp.10533-10567.
A survey study of the correlations developed for single-phase heat transfer and pressure drop using nanofluids
(2022) Khan, Asif; Latif, Mohammad Hunain; Ali, Muddassir; Khattak, Zulfiqar; Adnan, Ahmed; Ghaemi, Ferial; Baleanu, Dumitru; Mohamed, T.; 56389
Nanofluids, maneuvered by the steady augmentation of metallic and non-metallic identities to nano-size in a fundamental liquid including upgraded heat absorption, show precedence regarding effective heat control at the nano-level. Besides increased heat absorption-gravity, segmentation, ballistic conduction, inter-stage frictional force, unsteady shear count, diffusion, particle shift due to adhesiveness, and coating at the meeting surface of solid and liquid, it plays an essential part in increasing thermal efficiency. The hydrogenated properties related to nanofluids are resolved through the combined effect of comparative modification in thermophysical characteristics susceptible to various factors like particle magnitude, substance and density, base liquid characteristics and acid value, liquid fever, and supplements. As a result, typical correlations stand ineffective in detailing peculiarities regarding nanofluids, and some studies led to the development concerning the transfer of heat and coefficient of friction relationship for various consolidations of nano-solution and working parameters. However, some researchers certified conventional friction factor models for nanofluids, though, some conflicting studies focused on the retribution in pressure reduction because nano-sized particles were big enough to be ignored. The basic theme attributed to this paper involves analyzing the study evolution for heat exchange and reduction in pressure interrelation for nano-solution using different analytical and constraints (working parameters). Additionally, a thorough analogy regarding heat transfer interdependency recommended for the same configuration and drift parameters is granted.
Citation Count: Nemati, Mohammad...et al. (2021). "Convection heat transfer under the effect of uniform and periodic magnetic fields with uniform internal heat generation: a new comprehensive work to develop the ability of the multi relaxation time lattice Boltzmann method", Journal of Thermal Analysis and Calorimetry.
Convection heat transfer under the effect of uniform and periodic magnetic fields with uniform internal heat generation: a new comprehensive work to develop the ability of the multi relaxation time lattice Boltzmann method
(2021) Nemati, Mohammad; Sani, Hajar Mohamadzade; Jahangiri, Ramin; Sefid, Mohammad; Mohammad Sajadi, S.; Baleanu, Dumitru; Ghaemi, Ferial; 56389
The purpose of the present work is to investigate the effect of the angle of application of magnetic field in two types of uniform and non-uniform on the nanofluid flow characteristics and natural convection heat transfer in the presence of uniform heat generation. This numerical study was performed using multi relaxation time lattice Boltzmann method (MRT-LBM). The D(2)Q(9) and D(2)Q(5) grid arrangements were used to simulate the flow and temperature fields, respectively. The results show that in all cases, increasing the strength of magnetic field (the Hartmann number) reduces the average Nusselt number, which increases with increasing the heat generation coefficient. Applying a magnetic field horizontally results in an average of about 15% lower Nusselt number compared to the vertical. Increasing the strength of magnetic field (the Hartmann number) and the average Nusselt number is achieved by periodically applying a magnetic field instead of applying a uniform one. As the aspect ratio of the cavity increases, the non-uniform effect of applying a magnetic field becomes more apparent.
Citation Count: Yan, Li;...et.al. (2022). "Effect of laser welding parameters on the temperature distribution, microstructure and mechanical properties of dissimilar weld joint of Inconel 625 and stainless steel 304", International Communications in Heat and Mass Transfer, Vol.131.
Effect of laser welding parameters on the temperature distribution, microstructure and mechanical properties of dissimilar weld joint of Inconel 625 and stainless steel 304
(2022) Yan, Li; Jam, Jafar Eskandari; Beni, Mohsen Heydari; Kholoud, Mohammad Javad; Baleanu, Dumitru; Shahraki, Majid Eskandari; Ghaemi, Ferial; 56389
Laser welding technology and investigation of temperature distribution can serve as an important criterion for performing high-quality joints. In this experimental study, dissimilar laser welding is performed between stainless steel 304 (S·S 304) and Inconel 625 alloys. The temperature is measured by changing such parameters of laser as laser power, welding speed and nozzle distance. The parameters variations are 300–400 W, 240–480 mm/min and 0–4 mm for the laser power, welding speed and nozzle distance, respectively. Examining the parameters shows that the change in the laser power due to temperature changes had a greater effect on temperature changes around the Inconel 625 side melt pool; also, the rate of change was about twice that of S·S 304. In the case of the S·S 304 alloy, the temperature increase was occurred at a slower rate and the evaporation rate of the material on the S·S304 side is higher than that of Inconel 625 superalloy. As a result, the rate of temperature increase is slower and part of the laser energy is used to evaporate S·S 304. The microstructural changes in the boundary of the fusion zone with the base metal Inconel 625 are clearly visible.
Citation Count: Abbasi, Mohammad...et al. (2021). "Effects of Brownian motions and thermophoresis diffusions on the hematocrit and LDL concentration/diameter of pulsatile non-Newtonian blood in abdominal aortic aneurysm", Journal of Non-Newtonian Fluid Mechanics, Vol. 294.
Effects of Brownian motions and thermophoresis diffusions on the hematocrit and LDL concentration/diameter of pulsatile non-Newtonian blood in abdominal aortic aneurysm
(2021) Abbasi, Mohammad; Esfahani, Amin Nadimian; Golab, Ehsan; Golestanian, Omid; Ashouri, Nima; Sajadi, S. Mohammad; Ghaemi, Ferial; Baleanu, Dumitru; Karimipour, A.; 56389
LDL concentration is believed to be responsible for plaque formation that leads to atherosclerotic cardiovascular disease. We conducted this study to investigate the effects of hematocrits and LDL diameters on LDL concentration on the wall of an abdominal aortic aneurysm (AAA). The blood flow was considered to be a pulsatile and non-Newtonian flow whose viscosity was a function of hematocrits and strain rate. Lumen, Brownian, and thermophoresis diffusions were analyzed in LDL concentration. The results demonstrated that adding thermophoresis diffusion increases LDL concentration. Moreover, among three types of LDLs, including small LDLs, intermediate LDLs, and large LDLs, small LDLs were the ones with the highest concentration at the wall of the aneurysm. Furthermore, the effects of vorticity on diffusions were examined; it could be noted that the maximum Brownian diffusion appeared in vorticity places. Our results indicated that Brownian diffusion declines as hematocrit reaches 45% whereas thermophoresis diffusion increases. The current simulation investigated the effects of hematocrits, vorticity, Brownian, and thermophoresis diffusions on LDL concentration on the wall. Three types of LDL were taken into account for investigation of the effects of the diameter and reference concentration on LDL concentration. The outcomes of this study could be summarized as the following: the maximum amount of the wall shear stress appeared at 0.2T and at the upstream end of the AAA; moreover, thermophoresis diffusion increased small LDL concentration by 26% on the wall for hematocrit 45%. © 2021
Citation Count: Tlili, Iskander;...et.al. (2022). "Flat sheet direct contact membrane distillation study to decrease the energy demand for solar desalination purposes", Sustainable Energy Technologies and Assessments, Vol.52.
Flat sheet direct contact membrane distillation study to decrease the energy demand for solar desalination purposes
(2022) Tlili, Iskander; Mohammad, Sajadi S.; Baleanu, Dumitru; Ghaemi, Ferial; 56389
One of the most important feature of any desalination technology is energy consumption of producing fresh water specially when its energy source is solar energy. To improve this, study of various input parameters and determination of their effects on energy consumption would be essential. In this paper, a one-dimensional model is used to investigate the effects of different operational and geometrical parameters on energy consumption of flat sheet direct contact membrane distillation (DCMD) for solar desalination purposes. It is assumed that the energy consumption of DCMD includes of electrical to drive electro pumps and thermal energy. In this regard, variation of each parameter is studied at different inlet bulk flow temperatures difference (TD). Results show that specific energy consumption (EC) of DCMD is improved by increasing inlet bulk flow temperature difference regardless of any parameter variations. Nevertheless, increasing of Inlet mass flow rate and decreasing inlet salinity are also enhanced specific energy consumption. For geometrical parameters, increasing length, width and channel height increase energy consumption while increasing membrane porosity and thickness do the opposite. It is also observed that the electrical energy incorporates a very small portion of whole energy consumption in most cases but when small channel width or height is selected it becomes significant. Since electrical energy is more expensive than thermal energy, careful channel geometry design must be done.
Citation Count: Ranjbarzadeh, Ramin...et al. (2021). "Improve the heat exchanger efficiency via examine the Graphene Oxide nanoparticles: a comprehensive study of the preparation and stability, predict the thermal conductivity and rheological properties, convection heat transfer and pressure drop", Journal of Thermal Analysis and Calorimetry.
Improve the heat exchanger efficiency via examine the Graphene Oxide nanoparticles: a comprehensive study of the preparation and stability, predict the thermal conductivity and rheological properties, convection heat transfer and pressure drop
(2021) Ranjbarzadeh, Ramin; Akhgar, Alireza; Taherialekouhi, Roozbeh; D’Orazio, Annunziata; Mohamma, Sajadi S.; Ghaemi, Ferial; Baleanu, Dumitru; 56389
In this research, the effect of using GO/ water nanofluid as a coolant fluid in an isothermal heat transfer system was studied. At first, to evaluate the atomic bond, chemical, and surface structure of the nanoparticles, XRD-FTIR and FESEM tests were used. Two-step method was used to prepared nanofluid then DLS test was utilized to examine the stability of the nanofluid. Thermal conductivity and the dynamic viscosity were measured experimentally from 25 to 75 ℃ and volume fractions of 0–0.15%. The maximum improvement in thermal conductivity is 11.2% at 0.15% and 75 ℃. Also The dynamic viscosity increased. The validity and uncertainty of the test results were examined. The heat transfer and turbulent flow of the nanofluid under a constant temperature boundary condition were investigated between 6000 and 18,700 Reynolds numbers. Various parameters such as the pressure drop, friction factor, convection heat transfer coefficient, and Nusselt number of the turbulent flow were evaluated. According to the results, the greatest increase in the convection heat transfer coefficient of the nanofluid was 34.7% compared to that of the base fluid. Also, the greatest enhancement in the friction factor was 9.64%. It can be stated that the improvement of the convection heat transfer coefficient dominantly affects the pressure drop so this nanofluid can be used as a coolant fluid in industrial systems. © 2021, Akadémiai Kiadó, Budapest, Hungary.
Citation Count: Abidi, Awatef...et al. (2021). "Improve thermal performance of Simulated-Body-Fluid as a solution with an ion concentration close to human blood plasma, by additive Zinc Oxide and its composites: ZnO/Carbon Nanotube and ZnO/Hydroxyapatite", Journal of Molecular Liquids, Vol. 342.
Improve thermal performance of Simulated-Body-Fluid as a solution with an ion concentration close to human blood plasma, by additive Zinc Oxide and its composites: ZnO/Carbon Nanotube and ZnO/Hydroxyapatite
(2021) Abidi, Awatef; Jokar, Zahra; Allahyari, Seyedmahmoodreza; Kolahi Sadigh, Fereshteh; Mohammad, Sajadi S.; Firouzi, Payam; Baleanu, Dumitru; Ghaemi, Ferial; Karimipour, Arash; 56389
Nanofluid is a suspension of Nanoparticles in a basefluid. Typical fluids carry less heat transfer than nanofluids. However, the perception of heat transfer for bio-nanomaterials can help scientists in fields as implant coatings, nano-robotics, etc. In this research, heat transfer of Zinc Oxide (ZnO) in Simulated-Body-Fluid (SBF) was studied. Then, heat transfer of ZnO/Carbon Nanotube and ZnO/Hydroxyapatite in SBF was studied. After that, the results were compared experimentally and numerically. The numerical optimization was done by Artificial Neural Network and Fuzzy system. To make the ZnO/SBF mono nanofluid, first, five volume fractions of 0.2–1.0% were made. Also, ZnO-HA/SBF and ZnO-CNT/SBF hybrid nanofluid samples were made in the same volume fractions, individually. After that, heat transfer was measured at temperatures of 20–50 °C. Also, Artificial Neural Networks with Levenberg-Marquardt and Orthogonal-Distance-Regression algorithms were modeled. Then, Fuzzy system was employed to train the data with the least uncertainty. Results showed that in comparison with ZnO-SBF nanofluid, the effects of adding Hydroxyapatite and Carbon Nanotube are heat transfer enhancement of −16.73% and +17.49% at 1.0 vol% and 50 (°C), individually. Also, computational process can be employed to optimize the “nanofluid's heat transfer measurement” for cost-reduction in experiments. © 2021 Elsevier B.V.
Citation Count: Golab, Ehsan...et al. (2021). "Investigation of the effect of adding nano-encapsulated phase change material to water in natural convection inside a rectangular cavity", Journal of Energy Storage, Vol. 40.
Investigation of the effect of adding nano-encapsulated phase change material to water in natural convection inside a rectangular cavity
(2021) Golab, Ehsan; Goudarzi, Sahar; Kazemi-Varnamkhasti, Hamed; Amigh, Hossein; Ghaemi, Ferial; Baleanu, Dumitru; Karimipour, Arash; 56389
The present simulation aims to investigate adding NEPCM nanoparticles to water in the natural convection inside a cavity by using FVM method and SIMPLE algorithm. Nano-encapsulated phase change material (NEPCM) consists of a shell and core with phase change property. The NEPCM particles in base fluid have the ability to transfer heat by absorbing and dissipating heat in the liquid-solid phase change state. In this study, the energy wall phenomenon due to the phase change of NEPCM core has appeared that the whose energy transfer strength is proportional to the latent heat of NEPCM core and the thickness of the energy wall. Moreover, the relationship between the energy wall and the heat transfer rate is payed attention, and the effects of the energy wall parameters including strength, thickness, and event location of energy wall and volume fraction are studied on the energy wall and heat transfer rate. According to the obtained results, adding NEPCM to the water enhances its heat transfer up to 48% in order to increase heat capacity of water-NEPCM mixture. Also, best heat transfer rate happens when the energy wall is at the center of the cavity. Moreover, a relation is presented for the thermal expansion coefficient of NEPCM, which considers the effects of the thermal expansion coefficient of the core and shell material. © 2021 Elsevier Ltd
Citation Count: Nemati, Mohammad;...et.al. (2022). "Lattice Boltzmann method to study free convection and entropy generation of power-law fluids under influence of magnetic field and heat absorption/generation", Journal of Thermal Analysis and Calorimetry, Vol147, No.19, pp.10569-10594.
Lattice Boltzmann method to study free convection and entropy generation of power-law fluids under influence of magnetic field and heat absorption/generation
(2022) Nemati, Mohammad; Sefid, Mohammad; Mohammad, Sajadi S.; Ghaemi, Ferial; Baleanu, Dumitru; 56389
The aim of this present work assesses heat transfer and entropy generation arising from free convection of power-law fluids in a trapezoidal chamber under the effect of uniform and non-uniform magnetic field with heat absorption/generation by using LBM. The impact of Rayleigh number (103, 104 and 105), wall slope (11.5°, 26.5° and 38.5°), power-law index (0.75, 1.0 and 1.25), Hartmann number (0, 15, 30 and 45), type of magnetic field applied (uniform and non-uniform) with heat absorption/generation (− 10, − 5, 0, + 5 and + 10) on fluid flow and heat transfer characteristics has been evaluated. By enhancement of the Rayleigh number and decreasing wall slope of the chamber, the flow strength, the rate of heat transfer and entropy generation increase and the effect of the magnetic field becomes more remarkable. By applying a magnetic field non-uniformly, the flow strength and heat transfer rate can be grown to about 25% and 15%, respectively. At higher Hartmann and Rayleigh numbers, the effect of changing the type of magnetic field applied is more notable. By increasing the heat absorption/generation coefficient, the average Nusselt number decreases and the effect of the magnetic field increases. In the heat generation mode, the total entropy generation increases with increasing Hartmann number, while in the heat absorption mode, the opposite effect was obvious. A salient and distinctive feature of the present work compared to previous studies is the application of non-uniform magnetic field (specific type of application) in the presence of heat absorption/generation for non-Newtonian fluids, which is not researched.
Citation Count: Jalali, Esmaeil...et al. (2022). "Numerical analysis of the effect of hot dent infusion jet on the fluid flow and heat transfer rate through the microchannel in the presence of external magnetic field", Journal of Thermal Analysis and Calorimetry, Vol. 147, No. 15, pp. 8397-8409.
Numerical analysis of the effect of hot dent infusion jet on the fluid flow and heat transfer rate through the microchannel in the presence of external magnetic field
(2022) Jalali, Esmaeil; Sajadi, S. Mohammad; Ghaemi, Ferial; Baleanu, Dumitru; 56389
In this work, the nanofluid flow inside a microchannel with serrated injection jet on the upper wall of microchannel and using magnetic field with intensity of 0–40 Hartman were surveyed. The lower microchannel wall with jet injection racks has a constant temperature, but the upper microchannel wall is insulated among injection jets. Applying dented mode for injection jets was performed to enhance heat transfer. This research was performed for Reynolds numbers 10–50 and B = 0.01, 0.05, and 0.1 and for volume fraction of 0–6% water/Al2O3. The results indicated that the higher the height of dents was, the higher the heat transfer occurred. © 2021, Akadémiai Kiadó, Budapest, Hungary.
Citation Count: Tlili, Iskander;...et.al. (2022). "Numerical and experimental analysis of temperature distribution and melt flow in fiber laser welding of Inconel 625", International Journal of Advanced Manufacturing Technology, Vol121- No.1-2, pp.765-784.
Numerical and experimental analysis of temperature distribution and melt flow in fiber laser welding of Inconel 625
(2022) Tlili, Iskander; Baleanu, Dumitru; Mohammad, Sajadi S.; Ghaemi, Ferial; Fagiry, Moram A.; 56389
In these days, laser is a useful and valuable tool. Low input heat, speed, accuracy, and high controllability of laser welding have led to widespread use in various industries. Nickel-based superalloys are creep-resistant materials used in high-temperature conditions. Also, these alloys have high strength, fatigue, and suitable corrosion resistance. Inconel 625 is a material that is strengthened by a complex deposition mechanism. Therefore, the parameters related to laser welding affect the microstructure and mechanical properties. Therefore, in this study, the effect of fiber laser welding parameters on temperature distribution, weld bead dimensions, melt flow velocity, and microstructure was investigated by finite volume and experimental methods. In order to detect the temperature history during continuous laser welding, two thermocouples were considered at a distance of 2 mm from the welding line. The heat energy from the laser beam was modeled as surface and volumetric heat flux. The results of numerical simulation showed that Marangoni stress and buoyancy force are the most important factors in the formation of the flow of liquid metal. Enhancing the laser power to 400 W led to the expansion of the width of the molten pool by 1.44 mm, which was in good agreement with the experimental results. Experimental results also showed that increasing the temperature from 500 °C around the molten pond leads to the formation of a coarse-grained austenitic structure.
Citation Count: He, Xinlin;...et.al. (2022). "Numerical study of heat transfer in a microchannel equipped with the semicircular ribs influenced by slip condition: effects of various slip coefficient and Hartmann number", European Physical Journal Plus, Vol.137, No.7.
Numerical study of heat transfer in a microchannel equipped with the semicircular ribs influenced by slip condition: effects of various slip coefficient and Hartmann number
(2022) He, Xinlin; Alderremy, A.A.; Aly, Shaban; Tlili, Iskander; Ghaemi, Ferial; Baleanu, Dumitru; 56389
In the present work, a microchannel that benefits from the simultaneous effect of slip condition and semicircular ribs was studied to boost heat transfer. A numerical method was utilized to examine the thermal and hydraulic behavior. The results reveal that the velocity is not zero since the slip condition exists in the microchannel. Furthermore, the velocity near the wall has a dramatic value when the slip length increases. Although the heat transfer is not remarkable by semicircular ribs, the magnetic field plays a vital role in boosting the heat transfer as a result of the declining thermal boundary layer. The effect of magnetic field on the heat transfer on the low Re number is not like the higher one which means as the Reynolds number (Re) varies from 10 to 90, the heat transfer goes up from 1.12 to 2.63. Furthermore, at Re = 90, a 255% enhancement is seen in the microchannel by affecting magnetic field at Hartmann number = 15. The results of slip condition claim that slip condition is introduced as the third most effective factor in rising and improving the efficiency of the microchannel. There is a 16.23% improvement in heat transfer by using slip condition in the microchannel. More importantly, the figure for heat transfer is enhanced by increasing the radius of ribs.
Citation Count: Rawa, Muhyaddin J.H...et al. (2022). "Phase change material dependency on solar power plant building through examination of energy-saving", Journal of Energy Storage, Vol. 45.
Phase change material dependency on solar power plant building through examination of energy-saving
(2022) Rawa, Muhyaddin J.H.; Abu-Hamdeh, Nidal H.; Karimipour, Arash; Nusier, Osama K.; Ghaemi, Ferial; Baleanu, Dumitru; 56389
In this study, the effect of phase change material on walls and roof considering solar intensity was discussed. Due to the geographical location of the city of Jeddah in Saudi Arabia, the effect of installing phase change material within thicknesses of 1–10 cm in the period from April 1 to September 30 was investigated. Numerical results showed that if phase change material is added to the roof (at 1 cm), the heat transfer not only did not decline but also increased. However, for the walls in the main directions, phase change material (at 1 cm) was useful. Based on the results, the western wall was the most sensitive wall to phase change material presence so that the addition of phase change material at 1–5 cm resulted in energy-saving by 2.4–7.2 kWh/m2. Although phase change material at a thickness of 1 was not useful for the roof, at thicknesses of 2–5 cm, the presence of phase change material reduced the energy exchange by 1.21–33.8 kWh/m2. Finally, it was found the best results are obtained by adding phase change material for the western wall and roof. Examining the energy-saving for building by adding phase change material, it was found that adding phase change material with thickness up to 5 cm is recommended. Further increase in thickness reduces the positive effects of phase change material.
Citation Count: Esfahani, Mohammad Behzad Botlani...et al. (2022). "The effect of sedimentation phenomenon of the additives silver nano particles on water pool boiling heat transfer coefficient: A comprehensive experimental study", Journal of Molecular Liquids, Vol. 345.
The effect of sedimentation phenomenon of the additives silver nano particles on water pool boiling heat transfer coefficient: A comprehensive experimental study
(2022) Esfahani, Mohammad Behzad Botlani; Mohammad, Sajadi S.; Abu-Hamdeh, Nidal H.; Bezzina, Smain; Abdollahi, Ali; Karimipour, Arash; Ghaemi, Ferial; Baleanu, Dumitru; 56389
Nowadays, the increase in the number of nanoparticles in base fluids is considered as one of the most significant causes of change in thermodynamic properties and boiling heat transfer coefficient. Hence, the present study aims to examine the effects of different concentrations of silver nanoparticles on pool boiling inside deionized water. Five different nanoparticle concentrations were tested, namely (0.2, 0.4, 0.6, 0.8, 1) gr/lit. The nanoparticles were synthesized using the two-step method in an aqueous base fluid. A magnetic stirrer was first used to suspend the nanoparticles, and then the stabilization was performed using an ultrasonic stirrer. The average diameter of the nanoparticles is approximately 20 nm, and the stability results indicate that the nanofluids are highly stable. The stability results from the DLS test show that changing the pH of the base fluid by 9 at a concentration of 0.4 gr/lit results in stability of −40 mV. The boiling results of the deionized water were recorded in three steps and were compared to the Rohsenow curve. The variations were very similar to the Rohsenow curve, and the change in the wall superheat and the shifting of the curve can be due to the different conditions of the experimental apparatus. The results indicate that adding silver nanoparticles leads to a decrease in the boiling heat transfer coefficient provided that the roughness parameter is smaller than or equal to unity. Increasing the concentration can reduce the deviation in the boiling heat transfer coefficient at low heat fluxes and increase it at high heat fluxes. Furthermore, boiling heat transfer on sedimentation surfaces was examined in three sedimentation steps. The results show that an increase in sedimentation and a decrease in the roughness parameter cause a reduction in the boiling heat transfer coefficient.
Citation Count: Guo, Hui-Hui...et al. (2021). "The investigation of energy management and atomic interaction between coronavirus structure in the vicinity of aqueous environment of H2O molecules via molecular dynamics approach", Journal of Molecular Liquids, Vol. 341.
The investigation of energy management and atomic interaction between coronavirus structure in the vicinity of aqueous environment of H2O molecules via molecular dynamics approach
(2021) Guo, Hui-Hui; Yazid Bajuri, Mohd; Alrabaiah, Hussam; Muhammad, Taseer; Mohammad, Sajadi S.; Ghaemi, Ferial; Baleanu, Dumitru; Karimipour, Arash; 56389
The coronavirus pandemic is caused by intense acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Identifying the atomic structure of this virus can lead to the treatment of related diseases in medical cases. In the current computational study, the atomic evolution of the coronavirus in an aqueous environment using the Molecular Dynamics (MD) approach is explained. The virus behaviors by reporting the physical attributes such as total energy, temperature, potential energy, interaction energy, volume, entropy, and radius of gyration of the modeled virus are reported. The MD results indicated the atomic stability of the simulated virus significantly reduced after 25.33 ns. Furthermore, the volume of simulated virus changes from 182397 Å3 to 372589 Å3 after t = 30 ns. This result shows the atomic interaction between various atoms in coronavirus structure decreases in the vicinity of H2O molecules. Numerically, the interaction energy between virus and aqueous environment converges to −12387 eV and −251 eV values in the initial and final time steps of the MD study procedure, respectively.
Citation Count: Liu, Xinglong...et.al. (2022). "The investigation of Fe3O4 atomic aggregation in a nanochannel in the presence of magnetic field: Effects of nanoparticles distance center of mass, temperature and total energy via molecular dynamics approach", Journal of Molecular Liquids, Vol.348.
The investigation of Fe3O4 atomic aggregation in a nanochannel in the presence of magnetic field: Effects of nanoparticles distance center of mass, temperature and total energy via molecular dynamics approach
(2022) Liu, Xinglong; Fagiry, Moram A.; Mohammad, Sajadi S.; Almasri, Radwan A.; Karimipour, Arash; Li, Zhixion; Baleanu, Dumitru; Ghaemi, Ferial; 56389
The computational procedure was utilized to explain the size effect of Fe3O4 nanoparticles on atomic behavior and phenomena of nanoparticles accumulation in nanochannel of ideal platinum (Pt) and the external magnetic field. Argon (Ar) atoms were considered as the base liquid, and the molecular dynamics procedure was utilized in this investigation. We utilized the Lennard-Jones potential to interact between the particles, whereas the nanochannel and nanoparticles structures were simulated. To compute the atomic manner, the quantities of nanoparticles distance center of mass, and the aggregation duration were presented. The outcomes implied that the nanoparticles size had a significant role in the accumulation. As the nanoparticles’ size increased, the accumulation time of nanoparticles reached to 1.29 ns. Also, the outer magnetic field could severly postpone this event.
Citation Count: Shi, Yunhong...et al. (2021). "The Molecular dynamics study of atomic Management and thermal behavior of Al-Water Nanofluid: A two phase unsteady simulation", Journal of Molecular Liquids, Vol. 340.
The Molecular dynamics study of atomic Management and thermal behavior of Al-Water Nanofluid: A two phase unsteady simulation
(2021) Shi, Yunhong; allahyari, Seyedmahmoodreza; Mohammad, Sajadi S.; Alazwari, Mashhour A.; Firouzi, Payam; Abu-Hamdeh, Nidal H.; Ghaemi, Ferial; Baleanu, Dumitru; Karimipour, Arash; 56389
Molecular Dynamic (MD) approach is used to describe the temperature and pressure effects on the Al nanoparticles aggregation process in the aqueous environment of water as the base liquid. For this goal, various physical parameters like total energy, temperature, aggregation time, and total energy of the simulated structures, are reported. The results show that the aggregation process enlarges by the ratio of temperature and pressure. By atomic mobility increasing, the Al nanoparticles collide with each other in a shorter simulation time. Numerically, by temperature increases from 300 K to 350 K, the aggregation time decreases from 1.33 ns to 1.18 ns. Furthermore, aggregation time increases to 1.99 ns by more pressure to 5 bar.
Citation Count: Alian Moghadam, Reza...et al. (2022). "Water molecules adsorption by a porous carbon matrix in the presence of NaCl impurities using molecular dynamic simulation", Journal of Molecular Liquids, Vol. 347.
Water molecules adsorption by a porous carbon matrix in the presence of NaCl impurities using molecular dynamic simulation
(2022) Alian Moghadam, Reza; Mohammad, Sajadi S.; Abu-Hamdeh, Nidal H.; Bezzina, Smain; Kalbasi, Rasool; Karimipour, Arash; Ghaemi, Ferial; Baleanu, Dumitru; 56389
Today, one of the most important issues in human societies is environmental protection and material recycling. Due to their high surface area and high porosity, porous carbon can be used in different fields of catalytic, recycling, separation, storage, drug delivery, etc. In the present study, the process of adsorption of H2O molecules in the presence of NaCl impurities by a porous carbon matrix has been investigated using the molecular dynamics method. The results show that the process of adsorption of H2O molecules by the porous carbon matrix decreases with increasing impurities in atomic structures. Increasing impurities in atomic structures disrupt the process of adsorption of H2O molecules by the porous carbon matrix. Numerically, by increasing the impurity to 20%, 56% of the H2O molecules were adsorbed on the simulated atomic matrix. Also, the increase in impurities in atomic structures increases the adsorption process of disturbing atoms by the porous carbon matrix. By increasing the impurity to 20%, 9% of the disturbing atoms were adsorbed on the simulated atomic matrix. Finally, by performing this simulation and investigating the effect of impurities on H2O absorption by porous carbon structures, it is expected that an optimal process can be designed for water treatment, which is one of the most important challenges of human societies.