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。
The general lumped parameter model introduced in this paper offers more accurate results than the traditional method for dynamic stiffness matrix of foundation is frequency-dependent.
由于基础动力阻抗矩阵是外荷载激励频率的函数，采用更多参数的一般集中参数模型与数值解答吻合精度更高。
Based on fast solution and its methods for single phase medium, a fast solution method for lumped parameter dynamic model of two-phase medium is put forward.
在快速求解法和单相工质快速求解法的基础上，提出了两相工质动态过程求解的快速求解法。
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