LAMINAR NATURAL CONVECTION HEAT TRANSFER IN A HORIZONTAL CAVITY WITH DIFFERENT END TEMPERATURES.

The heat transfer by free convection in a horizontal cavity with adiabatic horizontal walls and differentially heated end walls is studied analytically. The paper develops three models for explaining and predicting the heat transfer mechanism in a cavity with the height/length aspect ratio considerably smaller than one. The three models are: the regime of vanishing Rayleigh numbers; the intermediate regime; and the boundary layer regime. The transition from one model to the next occurs as the Rayleigh number increases. The Nusselt number prediction based on the three-regime theory agrees very well with available numerical and experimental heat transfer data.

Duke Authors

Cited Authors

  • Bejan, A; Tien, CL

Published Date

  • 1978

Published In

  • J Heat Transfer Trans ASME

Volume / Issue

  • 100 / 4

Start / End Page

  • 641 - 647

Citation Source

  • SciVal