Browsing by Author "Sajadi, S. Mohammad"

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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: 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: Chen, Liangliang;...et.al. (2022). "Solar radiation effect on PCM performance in the building applications: The collector energy-saving potential using CF-MWCNTs and CF-GNPs", Sustainable Energy Technologies And Assessments, Vol.52.
Solar radiation effect on PCM performance in the building applications: The collector energy-saving potential using CF-MWCNTs and CF-GNPs
(2022) Chen, Liangliang; Sajadi, S. Mohammad; Liu, Fenghua; Alrabaiah, Hussam; Aldabesh, Abdulmajeed; Baleanu, Dumitru; 56389
n this study, a hot and desert location with an annual temperature of 27.1 °C and a very high radiation intensity of 2143 kWh/m2, a solar system (ES) was approved to provide building cooling necessities. The cooling system, by connecting to the solar system, supplied a part of its required energy. The outer layer of the building walls was equipped with PCM (SP-21EK) with a melting point of 21–23 and latent heat of 170 kJ/kg. In the solar system, water was filled to absorb energy and then a combination of CF-MWCNTs and CF-GNPs nanoparticles were injected to the solar system to improve effectiveness. In July, when the radiation intensity was very high, the combination of PCM and SC condensed energy consumption (EC) by up to 46.48%. The presence of CF-MWCNTs and CF-GNPs at 0.1 wt% was useful in all conditions (2, 3 and 4 lit/min). In this case, the EC reduction was in the range of 360 to 1026 kWh. At lower concentrations, the nanoparticles not only were not worthwhile, in some cases increased EC by 937 kWh.