Mixed Convection Heat Transfer in Open Ended Inclined Channels with Discrete Isothermal Heating

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.