Development and Validation of Thermal-Hydraulic and Safety Analysis Code for CARR （TSACC）
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摘要: 针对中国先进研究堆(CARR)的具体结构和运行特点,利用Fortran程序设计语言开发了CARR热工水力安全分析程序TSACC(Thermal-hydraulic and Safety Analysis Code for CARR)。TSACC完全采用模块化结构设计,便于二次开发,可应用于多种事故工况及其他堆型的分析计算。基于程序验证的基本思想,分别利用TSACC和商用程序RELAP5/Mod3对CARR丧失厂外电源事故工况进行了计算。得到了堆芯平均通道以及最热通道内冷却剂流量、温度和最小偏离泡核沸腾比(MDNBR)等参数的瞬态响应。将TSACC计算结果与RELAP5/Mod3计算结果进行比较、分析后发现:除冷却剂发生倒流前后二者计算结果相差较大外,总体吻合较好。局部值差别较大的主要原因是两个程序在低流速区域选用的换热公式不同。程序验证结果表明了TSACC的准确性和适用性。Abstract: A Thermal-hydraulic and Safety Analysis Code for CARR（TSACC） was developed using For-tran Language. The adoption of modular programming techniques enables TASCC to be applied to other re-actors by easily modifying the corresponding function modules. Based on the principle of code validation, the Loss of Off-site Power（LOP） accident was analyzed using both TSACC and RELAP5/Mod3. Some important thermal-hydraulic parameters, such as coolant flowrate, temperature and MDNBR, in the mean channel and hot channel were obtained. The comparison between the computation results by TSACC and RELA5/Mod3 showed a good agreement in spite of a little larger difference during the coolant inverse flow process. The larger local difference is mainly caused by the adoption of different heat transfer correlations under low flow condition in the two codes. The code validation proves the applicability and accuracy of TSACC.
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Key words:
- CARR /
- Thermal-hydraulic /
- Safety Analysis /
- Validation /
- Loss of off-site power accident /
- RELAP5/Mod3 /
- TSACC
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