http://hdl.handle.net/2173/31858 Wed, 22 May 2013 18:29:11 GMT 2013-05-22T18:29:11Z http://hdl.handle.net/2173/35958 Title: Numerical solution for the mixed convection flow of a micropolar fluid past a continuously moving plate Authors: Bhargava, Rama; Agarwal, R. S.; Kumar, Lokendra; Takhar, Harmindar S. Abstract: Boundary layer solutions are presented to investigate the mixed convection flow characteristics from a continuous flat surface moving in a parallel free stream of micropolar fluid. The partial differential equations governing the flow and temperature functions are reduced to ordinary differential equations, which are solved numerically, using the finite difference method. The numerical values of the skin friction and the rate of heat transfer are given in the tables. The effect of Grashof number G and Prandtl number Pr on the velocity, microrotation and temperature functions has been studied. Description: Full-text of this article is not available in this e-prints service. This article was originally published in the International journal of heat and technology, published by and copyright Edizioni E. T. S. Tue, 01 Jan 2002 00:00:00 GMT http://hdl.handle.net/2173/35958 2002-01-01T00:00:00Z http://hdl.handle.net/2173/35957 Title: Finite element solution of micropolar fluid flow from an enclosed rotating disc with suction and injection Authors: Takhar, Harmindar S.; Bhargava, Rama; Agarwal, R. S. Abstract: The steady flow of a micropolar fluid over a finite rotating disc enclosed within a coaxial cylindrical casing has been studied. The governing equations were solved numerically by using the finite element method. Maximum values ξ₁ and ξ₂ of the dimensionless radial distance at which there is no-recirculation for the cases of net radial outflow and net radial inflow respectively, increase with an increase in the micropolar effects. The velocities at ξ₁ and ξ₂ as well as at some fixed radii have been calculated and the associated phenomena of no-recirculation/recirculation is discussed. The change in the flow phenomenon due to a reversal of the direction of the net radial flow has also been studied. Description: Full-text of this article is not available in this e-prints service. This article was originally published following peer-review in the International journal of engineering sciences, published by and copyright Elsevier. Tue, 01 May 2001 00:00:00 GMT http://hdl.handle.net/2173/35957 2001-05-01T00:00:00Z http://hdl.handle.net/2173/35933 Title: Finite element study of mixed convection micropolar flow in a vertical circular pipe with variable surface conditions Authors: Bhargava, Rama; Agarwal, R. S.; Kumar, Lokendra; Takhar, Harmindar S. Abstract: In the present paper the problem of fully developed mixed convection flow of a micropolar fluid with heat sources, in a vertical circular pipe has been studied. The governing non-linear coupled differential equations are solved by using the finite element technique. The effect of the micropolar parameter, heat source parameter, surface parameter and dissipation parameter on the velocity, micro-rotation and temperature functions have been discussed. The heat sources increase the velocity and temperature in the pipe while the heat sinks decrease them. The micropolar fluid thus behaves as a coolant and such a type of flow has useful applications in combustion chambers, exhaust nozzles of porous walled flow reactors, and the design of chemical processing equipment. Description: Full-text of this article is not available in this e-prints service. This article was originally published following peer-review in the International journal of engineering science, published by and copyright Elsevier. Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/2173/35933 2004-01-01T00:00:00Z http://hdl.handle.net/2173/35952 Title: Quasi linearization of mixed convection micropolar flow near stagnation point with suction Authors: Bhargava, Rama; Kumar, Lokendra; Takhar, Harmindar S.; Agarwal, R. S. Abstract: This paper presents a numerical solution for the mixed convection flow of an incompressible micropolar fluid near a stagnation point on a horizontal cylinder, with suction effects. The governing partial differential equations have been solved by using the quasi-linearization technique and the results have been compared with those obtained by using the finite difference method. Profiles for the velocity, microrotation and temperature functions are presented for a wide range of the buoyancy and the suction parameter values. It is noticed that micropolar fluids help in the reduction of drag forces and also act as a cooling agent, whereas suction enables us to control the boundary layer flow. Description: Full-text of this article is not available in this e-prints service. This article was originally published in the International journal of heat and technology, published by and copyright Edizioni E. T. S. Thu, 01 Jan 2004 00:00:00 GMT http://hdl.handle.net/2173/35952 2004-01-01T00:00:00Z