学术报告第201867期

报告题目：Heat transfer analysis of natural convection in nanofluids and micropolar fluids

报 告 人：M. Muthtamilselvan教授（Bharathiar University, India）

报告时间：2018年12月22日上午10:30至11:30

报告地点：南一楼中311

摘要： Natural convection of nanofluid/micropolar fluid in a square cavity with uniform and nonuniform heated thin plate built in horizontally or vertically is investigated numerically. The non-uniform heating is due to the nonlinearly varying temperature of the plate. The vertical walls are cooled while the top and bottom walls are insulated. The flow within the cavity is assumed to be two dimensional. The governing equations were solved by finite volume method using second order central difference scheme and upwind differencing scheme. The computational results are presented in the form of isotherms, streamlines and average Nusselt numbers. The study was performed for different Rayleigh numbers, Prandtl numbers, length of the heat source, location of the plate, vortex viscosity parameter and source non-uniformity parameters. The result shows that the presence of vortex viscosity parameter retards the fluid velocity and hence the heat transfer rate is decreased. Also, the non-uniformity parameter affects the fluid flow and heat transfer rate especially for higher Rayleigh numbers.

简介：M. Muthtamilselvan received his Ph.D. in 2008 from the Department of Mathematics, Bharathiar University, India. He is currently professor at the Department of Mathematics, Bharathiar University. His research interests are Computational Fluid Dynamics (CFD), convection in nanofluids, boundary layer flow and heat transfer analysis. He has published more than 45 articles in International journals. He guided 4 Ph.D and 27 M.Phil. students in the Applied Mathematics area. He has reviewed more than 70 papers in International journals like, Heat and Mass Transfer, International Journal for Numerical Methods in Fluids, IMA Journal of Applied Mathematics, ASME Journal of Computational and Nonlinear Dynamics, Journal of Mechanics, Engineering Applications of Computational Fluid Mechanics, etc.