Free convection in a three-dimensional cavity

Deshpande, MD (2003) Free convection in a three-dimensional cavity. Technical Report. National Aerospace Laboratories, Bangalore, India.

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    Abstract

    Heat transfer due to the simultaneous effect of forced convection and natural convection is referred to as mixed convection. This occurs frequently in many engineering problems. Jaluria (2001) lists many traditional and new areas of material processing where fluid flow13; plays a critical role in quality control. These flows are very complex and we list some of the complexities relevant here being complicated geometries, multiple regions, combined mechanisms and complex boundary conditions.13; We will consider the fluid motion in a rectangular parallelepiped. Since our goal is to consider both forced and free convection the governing equations, boundary conditions and the computer program are written for such a general case. But the study in this report is13; restricted to the natural or free convection without considering any forcing fluid motion. The transition to unsteady natural convection in a three-dimensional cavity is studied by integrating the Navier-Stokes equations with the Boussinesq approximation. The purpose of this report is to give details of the computer program and to make sure that the results obtained for the restricted free convection cases are reliable. We will see that some of the classical results to determine the critical Rayleigh number from stability theory will be obtained from the present computer program.

    Item Type: Proj.Doc/Technical Report (Technical Report)
    Uncontrolled Keywords: Heat transfer;Three dimensional cavity;Fluid flow
    Subjects: AERONAUTICS > Aeronautics (General)
    Division/Department: Computational and Theoretical Fluid Dynamics Division
    Depositing User: M/S ICAST NAL
    Date Deposited: 08 May 2009
    Last Modified: 17 Jun 2010 14:59
    URI: http://nal-ir.nal.res.in/id/eprint/5093

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