Browsing by Author "Dadheech, Praveen Kumar"

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Citation Count: Agrawal, Priyanka...et.al. (2023). "Exploration Of Casson Fluid-Flow Along Exponential Heat Source In A Thermally Stratified Porous Media", Thermal Science, Vol.27, No.SI, pp.S29-S38.
Exploration Of Casson Fluid-Flow Along Exponential Heat Source In A Thermally Stratified Porous Media
(2023) Agrawal, Priyanka; Dadheech, Praveen Kumar; Jat, Ram Niwas; Baleanu, Dumitru; Purohit, Sunil Dutt; 56389
Objective of the present investigation is intended to study the MHD Casson fluids flow through an exponentially stretching surface. This free convective flow is in-vestigated in thermally stratified porous medium. Also viscosity along with thermal conductivity is varying with temperature. With the exponential decay for the inter-nal heat generation in the region and buoyancy force, the natural-convection is induced. Then the transformed set of equations of the flow after applying suitable similarity solutions were encountered by Shooting Technique in conjunction with the fourth ordered Runge-Kutta method. Outputs illustrates that with increased viscosity parameter an increasing velocity profile is noticed but a decrement is observed for temperature field in entire domain and near the wall for temperature gradient profile. Also with increased Casson fluids parameter decreasing velocity profile is noticed but an increment is observed for temperature field in entire do-main and for temperature gradient profile near the wall.
Citation Count: Agrawal, Priyanka...et al. (2021). "Radiative MHD hybrid-nanofluids flow over a permeable stretching surface with heat source/sink embedded in porous medium", International Journal of Numerical Methods for Heat and Fluid Flow, Vol. 31, No. 8, pp. 2818-2840.
Radiative MHD hybrid-nanofluids flow over a permeable stretching surface with heat source/sink embedded in porous medium
(2021) Agrawal, Priyanka; Dadheech, Praveen Kumar; Jat, R.N.; Baleanu, Dumitru; Purohit, Sunil Dutt; 56389
Purpose: The purpose of this paper is to study the comparative analysis between three hybrid nanofluids flow past a permeable stretching surface in a porous medium with thermal radiation. Uniform magnetic field is applied together with heat source and sink. Three set of different hybrid nanofluids with water as a base fluid having suspension of Copper-Aluminum Oxide (Formula presented.), Silver-Aluminum Oxide (Formula presented.) and Copper-Silver (Formula presented.) nanoparticles are considered. The Marangoni boundary condition is applied. Design/methodology/approach: The governing model of the flow is solved by Runga–Kutta fourth-order method with shooting technique, using appropriate similarity transformations. Temperature and velocity field are explained by the figures for many flow pertinent parameters. Findings: Almost same behavior is observed for all the parameters presented in this analysis for the three set of hybrid nanofluids. For increased mass transfer wall parameter ((Formula presented.)) and Prandtl Number (Pr), heat transfer rate cuts down for all three sets of hybrid nanofluids, and reverse effect is seen for radiation parameter (R), and heat source/sink parameter ((Formula presented.)). Practical implications: The thermal conductivity of hybrid nanofluids is much larger than the conventional fluids; thus, heat transfer efficiency can be improved with these fluids and its implications can be seen in the fields of biomedical, microelectronics, thin-film stretching, lubrication, refrigeration, etc. Originality/value: The current analysis is to optimize heat transfer of three different radiative hybrid nanofluids ((Formula presented.), (Formula presented.) and (Formula presented.)) over stretching surface after applying heat source/sink with Marangoni convection. To the best of the authors’ knowledge, this work is new and never published before.