基于键合图的热工流体网络建模方法研究

应用功率键合图理论研究了热工流体网络的仿真建模问题,并从基本物理规律出发对其进行了仿真建模;采用分段集中参数法分析流体的流动过程,避免了以往把流体压缩性集中于若干网络节点上所造成的计算偏差,使模型的动态特性更符合实际。结合具体算例对该建模方法进行验证,证明其适用于常见的可压缩或不可压缩流体网络,具有较好的精确性和工程实用性。

Study on Bond Graph-based Modeling Method of Thermo-fluid Network

The modeling method of thermo-fluid network was studied by the application of power bond graph theory,and its bond graph models were established based on the basic physical laws. Sectional lumped parameter method was adopted to analyze liquid flow process,which avoids the calculational error that fastens the compressibility of liquid on several compressible nodes of network. The modeling method was attested to be characteristic of preferable accuracy and actual practicability by practical example,and can be...