화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Korean Journal of Chemical Engineering, Vol.26, No.5, 1226-1234, September, 2009
DOI10.1007/s11814-009-0213-8  Export Citation
Network numerical simulation of two-dimensional nonlinear micropolar hydrodynamics in a Darcian porous medium
Joaquin Zueco, Osman Anwar B´eg1, †, and Tong-Bou Chang2
  • ETS Ingenieros Industriales Campus Muralla del Mar, Departamento de Ingenieria T´ermica y de Fluidos, Universidad Polit´ecnica de Cartegna, Cartagena, Spain
  • 1Energy Systems, Magnetohydrodynamics and Heat Transfer Research,Mechanical Engineering Subject Group, Department of Engineering and Mathematics,Sheaf Building, Sheffield Hallam University, Sheffield, S1 1WB, England, UK
  • 2Fluid Dynamics and Heat Transfer Research, Department of Mechanical Engineering, Southern Taiwan University, 1 Nai-Tai Street, YungKang City, Tainan County, Taiwan
E-mail:
The two-dimensional steady-state boundary layer flow of an incompressible micropolar fluid in a Darcian porous medium is studied theoretically and computationally. The governing parabolic partial differential equations are reduced to dimensionless form by using a set of transformations, under appropriate boundary conditions. A network simulation method (NSM) solution is presented. Translational velocities (U, V) are found to increase with a rise in Darcy number (Da) and to increase and decrease, respectively, with a rise in micropolar parameter (Er), i.e., Eringen number (ratio of micropolar vortex viscosity to Newtonian viscosity). Micro-rotation is increased with increasing Er and Da values. Translational velocity gradient, ∂U/∂Y and micro-rotation gradient, ∂Ω/∂Y both increase with Darcy number; however, they are both found to decrease with increasing micropolar parameter, Er. The present study finds applications in polymer flows in filtration systems, chemical engineering, biorheology of porous tissue and plastic sheet processing.
Keywords:Non-Newtonian;Micropolar Fluid;Porous Medium;Network Numerical Simulation (NSM);Eringen Number;Darcy Number;Angular Velocity;Rheology
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