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首页> 外文会议>日本流体力学会年会 >Kinetic analysis for evaporation and condensation flows of a vapor between the condensed phases Effects of the coupling of the internal structures and the latent heat
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Kinetic analysis for evaporation and condensation flows of a vapor between the condensed phases Effects of the coupling of the internal structures and the latent heat

机译：蒸发蒸发蒸汽与静电耦合和潜热耦合之间蒸汽的蒸发和凝结流动的动力学分析

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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 How 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.
机译：基于BGK型的Boltzmann方程，研究了由并行放置的冷凝相位的相变过程引起的蒸汽的运动，瞬时稳定。冷凝阶段具有温度场作为其内部结构。在这种情况下，接口的温度变得未知参数，因此，必须在接口处施加跨接口的能量流动连续性的条件。一些特征是1）潜热参数的一定值给出质量和能量流的最大值。这里是新发现的这个事实是由于潜热参数的耦合效应和凝聚相的内部结构的存在; 2）负质量如何通过SONE和Onishi注意到现象，似乎在稳定状态下不存在，但这肯定在流动场过渡状态的短时间内表现出来; 3）负温度梯度，稳定状态的众所周知的现象似乎在当前结构中不存在于内部结构中。

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