The system model comprises the dynamic heat exchanger model based on the lumped parameter method and moving phase boundary method, and the stable flow models of compressor and expansion valve.

系统模型中包含了用集总参数和相移动边界法建立的热交换器动态模型，以及压缩机和膨胀阀的稳态流动模型。

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The mathematical model can be described as a coupled system of nonlinear partial differential equations with moving boundary values.

其数学模型是一组多层对流扩散耦合系统的动边值问题。

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A new wetting and drying method for the numerical tidal flow model is developed to deal with the moving boundary due to tidal waves at the tidal flat.

论文提出了一种新的干湿判断方法来处理潮流数值模拟中潮间带上的动边界问题。

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