Numerical Analysis of Laminar Flow and Heat Transfer in a Two-Dimensional Symmetrically Enlarged Channel

Abstract

The present paper presents a numerical analysis of two-dimensional steady separated and reattached flow and heat transfer in a symmetrically enlarged channel. Of particular interest is asymmetric flow in a symmetric channel, which was experimentally observed even at very low Reynolds numbers. The details of local heat-transfer characteristics along with flow behaviors accompanying two different separated flow regions on two downstream walls are clarified. It is found that the present results predict the measured ones reanonably well. Local heat-transfer distributions on the two walls differ greatly and their profiles are extremely different from results for Symmetric flow.