反应堆热工水力中CATHARE与TRIO_U程序耦合分析研究

Analytical Study on Coupling of CATHARE and TRIO_U Code for Nuclear Reactor Thermal-Hydraulic Analysis

采用区域覆盖的耦合方法对一维系统程序CATHARE与三维计算流体力学(CFD)程序TRIO_U进行耦合分析研究,对文中建立的简易模型进行稳态计算,通过耦合前程序误差、耦合平台误差测试,确认解析解、系统程序计算结果、TRIO_U程序计算以及单个程序均与耦合平台耦合计算结果吻合。分别对3个不同的源项区域(热源、动量源、热交换区域)进行耦合计算,并与CATHARE计算结果进行比较。研究结果表明,耦合方法可以模拟算例中所建立的整个反应堆的简易模型。

The overlapping coupling method was used for coupling the system code CATHARE(developed by CEA,EDF and Framatome) and the 3-D code TRIO_U(developed by CEA),which were taken to analyze the steady state of a simplified model built in this paper.Several test calculations were taken before the coupling calculations,including the code error test,the coupling platform error test,verifying the result of analytical case,system calculation,TRIO_U calculation and calculations of other codes.The test calculation results are in well accordance with the results of coupling calculations through the coupling platform.Three different source domains(heat source,momentum source and heat transfer source) are also calculated using the coupling method,and compared with the results of CATHARE.The research indicated that the overlapping coupling method can be used to simulate the simplified model for the whole reactor system built in this paper.