Numerical analyses were performed to determine the oscillation effect of an impingement surface on the impingement heat transfer and flow with a confined wall. As a moving boundary problem, two-dimensional governing equations were solved for the Reynolds numbers and 500, the Prandtl number , the dimensionless space between the nozzle and impingement surface , and the Strouhal number . Oscillation induced both the enhancement and depression of the local heat transfer. The local heat transfer was improved at a comparatively low frequency due to the flow fluctuation. On the other hand, at a high frequency, it was depressed due to the flow in an upper direction near the impingement surface. The oscillation effect spatially appeared downstream after the impingement.
Numerical Analysis of a Two-Dimensional Jet Impinging on an Oscillated Heat Transfer Surface
Ichimiya, K., and Watanabe, S. (June 25, 2009). "Numerical Analysis of a Two-Dimensional Jet Impinging on an Oscillated Heat Transfer Surface." ASME. J. Heat Transfer. September 2009; 131(9): 094505. https://doi.org/10.1115/1.3139188
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