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Heat Absorption and Joule Heating Effects on Transient Free Convective Reactive Micropolar Fluid Flow Past a Vertical Porous Plate

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Fluid Dynamics & Materials Processing 2019年第3期15卷 207-231页

作者： md.shamshuddin C.Balarama Krishna Department of Mathematics Vaagdevi College of Engineering(Autonomous)WarangalTelanganaIndia Department of Mathematics S R Engineering College(Autonomous)WarangalTelanganaIndia

Mathematical model for an unsteady,incompressible,electrically conducting micropolar fluid past a vertical plate through porous medium with constant plate velocity has been investigated in the present *** absorption,Joulian dissipation,and first-order chemical reaction is also *** the assumption of low Reynolds number,the governing transport equations are rendered into non-dimensional form and the transformed first order differential equations are solved by employing an efficient finite element *** of various flow parameters on linear velocity,microrotation velocity,temperature,and concentration are presented *** effects of heat absorption and chemical reaction rate decelerate the flow is particularly near the *** friction and wall couple stress increases as heat absorption increases but the reverse phenomenon is observed in the case of chemical reaction *** mass transfer rate increases for chemical reaction and Sherwood number increases for heat *** element study is very versatile in simulating unsteady micropolar rheo-materials processing transport ***,a relatively simple reaction effects restricted to first order.

关键词： Heat absorption joule heating chemical reaction micropolar fluid finite element method

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Numerical study of a dissipative micropolar fluid flow past an inclined porous plate with heat source/sink

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Propulsion and Power Research 2019年第1期8卷 56-68页

作者： shamshuddin md Thirupathi Thumma Department of Mathematics.Vaagdevi College of Engineering.Warangal Telangana 506005India Department of Mathematics B V Raju Institute of Technology Narsapur.MedakTelangana 502313India

Micropolar theories present an excellent mechanism for exploring new non-Newtonian materials processing provides a stimulating area for process engineering *** by area for process engineering applications,the present article presents the scope offinite element method in solving a mathematical model for magnetohydrodynamic,incom-pressible,dissipative and chemically reacting micropolar fluid flow and heat and mass transferthrough a porous medium from an inclined plate with heat sourcelsink has been *** this purpose,the set of governing equations have been reframed and put into adimensionless form under the assumption of low Reynolds number with appropriatedimensionless quantities that can fit into the finite element *** addition tohighlighting the operational aspects of weighted residual scheme,a detailed investigation hasbeen camied out on the associated flow stnucture,heat and mass *** evolution ofmany multi-physical parameters in these variables is illustrated *** elementcode is benchmarked with the results reported in the literature to check the validity andaccuracy under some limiting cases and excellent agreement is seen with published solutionsand results of skin friction coefficient,couple stress coefficient,Nusselt number and Sherwoodnumber for invoked parameter are tabulated which shows that increasing heat sourcelsinkparameter elevates *** reaction parameter reduces velocity and concentra-tion *** number enhances as chemical reaction parameter increases but reverse phenomena is observed in case of inclination of ***,a gridindependency test has been caried out for different grid sizes which has proven this methodis adequate.

关键词： Heat source/sink Chemical reaction Inclined porousplate Micropolar fluid Finite elementmethod(FEM)

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