Electro-magneto-hydrodynamic flow of couple stress nanofluids in micro-peristaltic channel with slip and convective conditions  

作　　者：K.RAMESH M.G.REDDY B.SOUAYEH 

机构地区：[1]Department of Mathematics,Symbiosis Institute of Technology,Symbiosis International(Deemed University),Pune 412115,India [2]Department of Mathematics,Acharya Nagarjuna University,Ongole Campus,Ongole 523001,India [3]Department of Physics,College of Science,King Faisal University,Al-Ahsa 31982,Saudi Arabia [4]Laboratory of Fluid Mechanics,Physics Department,Faculty of Sciences of Tunis,University of Tunis El Manar,Tunis 2092,Tunisia

出　　处：《Applied Mathematics and Mechanics(English Edition)》2021年第4期593-606,共14页应用数学和力学（英文版）

摘　　要：This study explores the effects of electro-magneto-hydrodynamics,Hall currents,and convective and slip boundary conditions on the peristaltic propulsion of nanofluids(considered as couple stress nanofluids)through porous symmetric microchannels.The phenomena of energy and mass transfer are considered under thermal radiation and heat source/sink.The governing equations are modeled and non-dimensionalized under appropriate dimensionless quantities.The resulting system is solved numerically with MATHEMATICA(with an in-built function,namely the Runge-Kutta scheme).Graphical results are presented for various fluid flow quantities,such as the velocity,the nanoparticle temperature,the nanoparticle concentration,the skin friction,the nanoparticle heat transfer coefficient,the nanoparticle concentration coefficient,and the trapping phenomena.The results indicate that the nanoparticle heat transfer coefficient is enhanced for the larger values of thermophoresis parameters.Furthermore,an intriguing phenomenon is observed in trapping:the trapped bolus is expanded with an increase in the Hartmann number.However,the bolus size decreases with the increasing values of both the Darcy number and the electroosmotic parameter.

关 键 词：PERISTALSIS magnetohydrodynamics(MHD) NANOFLUID Hall current porous medium thermal radiation 

分 类 号：O361[理学—流体力学]