D112 気体論方程式に基づく凝縮相間の蒸発・凝縮流れ : 凝縮相内部構造の存在と潜熱の影響(D-11 流体一般(1),一般講演)

概要

論文の詳細を見る
Motions of a vapor, transient to steady, caused by the phase change processes at the condensed phases placed in parallel have been studied based on the Boltzmann equation of BGK type. The condensed phases have temperature fields as their internal structures. The temperatures of the interfaces, in this case, become unknown parameters and, therefore, the conditions of the continuity of energy flow across the interfaces have to be imposed at the interfaces. Some of the features are that 1) a certain value of the latent heat parameter gives the maxima of the mass and energy flows. This fact, which is newly found here, is due to the coupling effects of the latent heat parameter and the existence of the internal structures of the condensed phases; 2) the negative mass flow phenomenon, first noticed by Sone and Onishi, seems to be non-existent at steady state but this surely manifests itself in a short period of time during the transitional state of the flow fields; 3) the negative temperature gradient, a well-known phenomenon at steady state, seems to be non-existent in the present case with internal structures.
日本流体力学会の論文
2004-08-09