适用于海洋条件的子通道分析程序开发及应用

发布时间：2018-05-31 15:19

本文选题：子通道分析 + 起伏　；参考：《核动力工程》2016年01期

【摘要】：基于海洋条件分析起伏和摇摆条件下的附加力计算方法,得出典型海洋条件下动量守恒方程的修改方法和压力边界条件修改方法。以此为依据,修改具有自主知识产权的子通道分析程序ATHAS,得到适用于海洋条件下的子通道分析程序ATHAS/OE。运用ATHAS/OE对陆奥反应堆堆芯进行起伏和摇摆条件下的热工水力分析;同时用COBRA-IV进行同样分析,验证ATHAS/OE的正确性。分析结果表明:起伏条件下ATHAS/OE所得计算结果与运用COBRA-IV的计算结果符合良好;起伏和摇摆条件下,子通道出口的质量流速、含汽率、堆芯最小偏离泡核沸腾比(MDNBR)都呈现周期性振荡;起伏条件下,由于进行了针对振荡加速度场下临界热流密度(CHF)计算的修正,相较于陆基条件下,起伏条件总是降低了堆芯MDNBR;而在摇摆条件下由于并未引入修正CHF计算的数学模型,故堆芯MDNBR的振荡很小。
[Abstract]:Based on the analysis of the additional forces under undulating and rocking conditions, the modified method of momentum conservation equation and the modification method of pressure boundary conditions under typical ocean conditions are obtained. Based on this, we modify the sub-channel analysis program ATHASA, which has independent intellectual property rights, and obtain the subchannel analysis program ATHAS-OE, which is suitable for ocean conditions. The thermohydraulic analysis of the reactor core under undulating and rocking conditions is carried out by using ATHAS/OE, and the correctness of ATHAS/OE is verified by the same analysis with COBRA-IV. The results show that the calculated results of ATHAS/OE under undulating conditions are in good agreement with those of using COBRA-IV, and the mass velocity and vapor content at the outlet of subchannels under undulating and rocking conditions are in good agreement with those obtained by COBRA-IV. Under fluctuating conditions, the critical heat flux (CHF) calculation under oscillating acceleration field is modified, compared with that under the condition of land base, the core minimum deviated from bubble boiling ratio (MDNBRR) shows periodic oscillation. The fluctuation condition always reduces the core MDNBR, but the oscillation of core MDNBR is very small because the mathematical model of modified CHF calculation is not introduced in the rocking condition.
【作者单位】：西安交通大学核科学与技术学院;
【分类号】：TL33

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