Entropy and the Second Law Fluid Flow and Heat Transfer Simulation
نویسنده
چکیده
A review of the diverse roles of entropy and the second law in computationalthermo– uid dynamics is presented. Entropy computations are related to numerical error, convergence criteria, time-step limitations, and other signi cant aspects of computational uid ow and heat transfer. The importance of the second law as a tool for estimating error bounds and the overall scheme’s robustness is described. As computational methods become more reliable and accurate, emerging applications involving the second law in the design of engineering thermal uid systems are described. Sample numerical results are presented and discussed for a multitude of applications in compressible ows, as well as problems with phase change heat transfer. Advantages and disadvantages of different entropy-based methods are discussed, as well as areas of importance suggested for future research.
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