A 3D MIXED CONVECTION STUDY IN A POROUS CAVITY
The aim of this work is to investigate the fully nonlinear coupled nonlinear partial differential equations governing the steady mixed convection in a 3D porous enclosure are solved numerically by Galerkin Finite Element Method (FEM). The forced flow conditions are imposed by providing an inlet with injection at the bottom surface and an outlet with suction on the top surface. The free convection is induced by a centrally buried isothermal cubical body together with Boussinesq approximation on density variable. In view of the large size of the linear systems encountered in the 3D FE calculations, a numerical scheme based on segregated variable approach is followed to carry out the numerical simulations. Detailed numerical computations are carried out for a wide range of governing parameters such as Rayleigh Number (Ra), suction/injection velocity (a), suction /injection width (D/H), cubical hot object of length Lh, as fraction of the length of the square enclosure and the results are analyzed by tracing the isotherms and streamlines on different 2D horizontal and vertical cross sections of the domain. Also local heat fluxes along the isothermal buried structure are presented in the form of Nusselt Number for different values of the governing parameters.
B.V.Rathish Kumar Mohit Nigam S.V.S.S.N.V.G.Krishna Murthy
Department of Mathematics, Indian Institute of Technology, Kanpur -208016, India Department of Mathematics, Indian Institute of Technology, Kanpur -208016,India Applied Mathematics and Systems Lab, Ecole Centrale Paris,92295, France
国际会议
2nd International Conference on Computational Methods for Thermal Problems(第二届热问题计算方法国际会议)
大连
英文
213-216
2011-09-05（万方平台首次上网日期，不代表论文的发表时间）