Abstract
AbstractWe numerically investigated the influence of the wall oscillation mode on the heat transfer characteristics of a two‐dimensional channel. In the present study, two channels with different wall oscillation modes were considered: a two‐dimensional channel bounded by a fixed wall and a transversely oscillating wall (channel A) and a two‐dimensional channel in which the upper and lower walls oscillate transversely in the same manner (channel B). The fully implicit finite difference method was used for the analysis of the conservation equations and the time‐dependent coordinate transformations were applied to solve the moving boundary problem. The calculated results are summarized as follows. (1) The wall oscillation has a significant effect on the heat transfer enhancement in the low‐Reynolds‐number region for each channel. (2) If increased pressure loss must be avoided, then channel B is more suitable than channel A. © 2009 Wiley Periodicals, Inc. Heat Trans Asian Res; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/htj.20250
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