本文利用 GT-COOL 软件建立某发动机的冷却系统一维模型，并对其进行仿真，得到冷却系统各个管路的流量、温度和压力等数据；然后将所得结果作为边界条件，利用 FLUENT 软件，对系统中的调温器进行三维仿真分析，实现一维与三维流动问题的联合仿真计算。通过仿真分析得到调温器中冷却水的温度场、压力场等数据，进而了解调温器内部流动状态和工作性能，为调温器结构优化提供数据支持。%Based on the GT-COOL software,the one-dimensional model of the engine cooling sys-tem can be built.The data of the engine cooling system,such as the flow of each line,the tem-perature,the pressure,etc.,can be obtained by the simulation.And then,the obtained results are used as the boundary conditions;FLUENT software is used to carry out three-dimensional simulation analysis of the thermostate in the system,so as to achieve the one-dimensional and the three-dimensional united simulation calculation of flow problem.The data of temperature field and pressure field,etc.of cooling water in the thermostat are obtained through the simulation analy-sis,whereby further understanding the inner flow state and working performances of the thermo-stat so as to provide data supports for optimizing the thermostat structure.
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