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首页> 外文期刊>Annals of nuclear energy >Thermohydraulic and safety analysis on China advanced research reactor under station blackout accident
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Thermohydraulic and safety analysis on China advanced research reactor under station blackout accident

机译：电站停电事故下中国先进研究堆的热工水力和安全性分析

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摘要

A thermohydraulic and safety analysis code-TSACC has been developed using Fortran90 language to evaluate the transient thermohydraulic behavior of the China advanced research reactor (CARR) under station blackout accident (SBA). For the development of TSACC, a series of corresponding mathematical and physical models were applied. Point reactor neutron kinetics model was adopted for solving the reactor power. All possible flow and heat transfer conditions under station blackout accident were considered and the optional correlations were supplied. The usual finite difference method was abandoned and the integral technique was adopted to evaluate the temperature field of the plate type fuel elements. A new simple and convenient equation was proposed for the resolution of the transient behaviors of the main pump instead of the complicated four-quadrant model. Gear method and Adams method were adopted alternately for a better solution to the stiff differential equations describing the dynamic behavior of the CARR. The computational result of TSACC showed the adequacy of the safety margin of CARR under SBA. For the purpose of Verification and Validation (V&V), the simulated results of TSACC were compared with those of RELAP5/MOD3 and a good agreement was obtained. The adoption of modular programming techniques enables TASCC to be applied to other reactors by easily modifying the corresponding function modules.
机译：使用Fortran90语言开发了热工安全分析代码-TSACC，以评估中国先进研究堆（CARR）在停电事故（SBA）下的瞬态热工行为。为了开发TSACC，应用了一系列相应的数学和物理模型。采用点反应堆中子动力学模型求解反应堆功率。考虑了车站停电事故下所有可能的流量和传热条件，并提供了可选的相关性。放弃了通常的有限差分法，并采用积分技术来评估板式燃料元件的温度场。提出了一个新的简单方便的方程式来代替主泵的瞬态行为，而不是复杂的四象限模型。为了更好地解决描述CARR动力学行为的刚性微分方程，交替采用了Gear方法和Adams方法。 TSACC的计算结果表明，在SBA下CARR的安全裕度足够。出于验证和验证（V＆V）的目的，将TSACC的仿真结果与RELAP5 / MOD3的仿真结果进行了比较，并获得了良好的一致性。模块化编程技术的采用使TASCC可以通过轻松修改相应的功能模块而应用于其他反应堆。

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