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ISSN Online: 2377-424X

ISBN Print: 1-56032-797-9

International Heat Transfer Conference 11
August, 23-28, 1998, Kyongju, Korea

NUMERICAL SIMULATIONS OF 2D STEADY LAMINAR NATURAL CONVECTION FLOWS AROUND ONE OR SEVERAL ENCLOSED THIN PLATES

Get access (open in a dialog) DOI: 10.1615/IHTC11.3130
pages 251-256

Аннотация

The steady laminar natural convection flow around one or several thin plates in an air-filled enclosure is numeri¬cally examined. The governing unsteady two-dimensional equations expressed in terms of stream function and vorticity are solved using a finite difference method. Numerical simulations are conducted in the case of a thin plate inside a square enclosure. Rayleigh number effects are investigated. For several configurations, typical patterns of streamlines and isothermal lines are examined and the heat transfer from the plate is calculated. The cases of plates at constant temperature and with constant heat flux are computed with different thermal boundary conditions at the enclosure wall. An application with several plates in a small aspect ratio rectangular enclosure is studied. The influence of Rayleigh number and cavity aspect ratio is studied. Different thermal boundary conditions on the plates are applied: plates with constant heat flux on one side, plates with constant heat flux on all sides, isothermal plates. Several cases of thermal boundary conditions of the enclosure walls are considered.