鉛直円管内の強制対流膜状凝縮の数値計算

概要

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In order to theoretically approach forced-convection filmwise condensation in a vertical tube numerically, the governing equations for both water vapour flow and condensate film flow were solved with a finite difference sheme simultaneously. The wave on the vapour-film interface was taken into account with a model previously used in the two-component two-phase annular flow. The present numerical results are compared with the experimental data given by Blangetti. The computed heat transfer results agree fairly well with Blangetti's data for the condensation of water vapour over a wide range of film Reynolds number, 50 < Re_f < 2 000, and for three different vapour flow Reynolds number. The present type of numerical analysis is found to be useful for the prediction of forced-convection condensation heat transfer.
1988-09-25