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Numerical Simulation for Bioconvection of Unsteady Stagnation Point Flow of Oldroyd-B Nanofluid with Activation Energy and Temperature-Based Thermal Conductivity Past a Stretching Disk

引用

Computer Modeling in Engineering & Sciences 2022年第1期130卷 233-254页

作者： Muhammad Sami Rashad Haihu Liu Shan Ali Khan School of Energy and Power Engineering Xi’an Jiaotong UniversityXi’an710049China Department of Mathematics Government College University FaisalabadLayyah Campus31200Pakistan

A mathematical modeling is explored to scrutinize the unsteady stagnation point flow of Oldroyd-B nanofluid under the thermal conductivity and solutal diffusivity with bioconvection *** of Joule heating and Arrhenius activation energy including convective boundary conditions are studied,and the specified surface temperature and constant temperature of wall(CTW)are *** consequences of thermal conductivity and diffusivity are also taken into *** flow is generated through stretchable disk geometry,and the behavior of non-linear thermal radiation is incorporated in energy *** partial differential equations governing the fluid flow in the structure is reduced into dimensionless nonlinear ODEs by applying suitable similarity *** obtained system of non-dimensional nonlinear ODEs is treated numerically with the help of bvp4c solver in Matlab under shooting *** impact of various prominent parameters on velocity profile,thermal profile,volumetric nanoparticle concentration and microorganism distribution is depicted in graphical *** numerical outcomes for skin friction coefficient,heat transfer rate,Sherwood number as well as microorganism density number versus various parameters are listed in the *** results show that fluid velocity is reduced by increasing buoyancy ratio parameter,while the fluid flow increases with mixed convective *** temperature profile is enhanced with the amount of nonlinear thermal radiation and temperature dependent thermal ***,concentration profiles of nanoparticles have opposite behavior for Brownian motion coefficient and thermophoresis diffusion parameter,and it is noticed that by varying Peclet number the microorganisms profile is *** proposed study is useful to control and optimize heat transfer in industrial applications.

关键词： Oldroyd-B nanofluid thermal conductivity solutal diffusivity conductivity bioconvective microorganisms shooting algorithm

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