ライブラリ登録: Guest

ISSN Online: 2377-424X

ISBN Print: 0-85295-345-3

International Heat Transfer Conference 10
August, 14-18, 1994, Brighton, UK

TURBULENT CONVECTION WITH AND WITHOUT THERMAL RADIATION IN A BACK HEATED OPEN CAVITY SWEPT BY AN EXTERNAL FORCED FLOW

Get access (open in a dialog) DOI: 10.1615/IHTC10.5020
pages 99-104

要約

The turbulent mixed convection with and without thermal surface radiation in a two-dimensional back wall heated open square cavity swept by an external forced flow is studied numerically by the finite-difference method. The flow medium is air, and it is considered to be compressible and property-variable. With the buoyancy effect taken into account, the Low-Reynolds-Number k — ε two-equation turbulence model is applied to model this complex physical problem. The flow and temperature fields in and about the cavity, the local Nusselt numbers and radiation fractions along the heated back wall are presented and discussed. Emphasis is focused on the radiation effects on the flow and heat transfer in the cavity at different Rayleigh numbers and Richardson numbers. Based on the contribution of the free convection to the overall convective heat transfer, the differentiation of the free, mixed and forced flow regimes in the open cavity is carried out.