L. Robillard

Abstract: A numerical study is carried out on mixed convection heat transfer (laminar natural and forced convections) in inclined open ended channels. The isothermal discrete heating elements are equally distanced and placed on one side, while isothermal conditions are imposed on the other. The governing equations are solved using the finite difference method. Normalized average and local Nusselt numbers are calculated as functions of the Rayleigh number (103 ≤ Ra ≤ 105), Reynolds number (10 ≤ Re ≤ 50), inclination angle (0 ≤ 0 ≤ 90), various heat sources (0.1 ≤ A ≤ 1), and various aspect ratios (5 ≤ B ≤ 20). These include, as limiting cases, horizontal and vertical positions. Flow and temperature fields for various cases are also produced.

TL;DR: In this paper, the authors considered a two-dimensional rectangular cavity whose portion of the bottom surface is isothermally heated, the upper surface is cooled at a constant temperature, and all other surfaces are adiabatic.

TL;DR: In this article, mixed convection heat transfer in open-ended channels with discrete heating from below is numerically studied when the convection cells remain attached to the heating elements. And the results from two approaches show that method B can adequately be used to calculate heat transfer.

TL;DR: In this article, the effects of the anisotropic permeability ratio K*, of the orientation angle of the principal axes defined by γ, and of the Rayleigh number Ra* on the flow and heat transfer are investigated.

TL;DR: In this article, an analytical solution for the flow and heat transfer variables, based on a concentric flow assumption, is obtained in terms of the Rayleigh number and the radius ratio.