CAJ | 학술논문

通过对摇摆条件下单相自然循环核热耦合的模拟计算，分析研究了摇摆条件下自然循环核热耦合系统平均功率的影响因素。分析结果表明：摇摆条件下，考虑核反馈后的系统平均功率与系统的平均质量流量、系统的平均传热系数成正比，与慢化剂与燃料的温度反馈系数比成反比。摇摆参数对系统平均功率的影响和慢化剂与燃料的温度反馈系数比有关。当系统平均传热系数的变化对反应性的影响起主导作用时，摇摆越剧烈，系统平均功率越大；当平均阻力系数的变化对反应性的影响起主导作用时，摇摆越剧烈，系统平均功率越小。
통과대요파조건하단상자연순배핵열우합적모의계산，분석연구료요파조건하자연순배핵열우합계통평균공솔적영향인소。분석결과표명：요파조건하，고필핵반궤후적계통평균공솔여계통적평균질량류량、계통적평균전열계수성정비，여만화제여연료적온도반궤계수비성반비。요파삼수대계통평균공솔적영향화만화제여연료적온도반궤계수비유관。당계통평균전열계수적변화대반응성적영향기주도작용시，요파월극렬，계통평균공솔월대；당평균조력계수적변화대반응성적영향기주도작용시，요파월극렬，계통평균공솔월소。
By performing simulation computations of single-phase flow natural circula-tion considering nuclear thermal coupling under rolling motion conditions ,the influence factors which have great effect on the average heating power of this circulation system were studied .The analysis results indicate that under rolling motion conditions ,the average heating power which considers the nuclear thermal coupling effect is in direct proportion to the average flow rate and average heat transfer coefficient ,w hile it has an inverse relationship with the ratio between temperature-feedback coefficient of modera-tor and that of fuel .The effect of rolling parameters on the average heating power is related with the ratio between temperature-feedback coefficient of moderator and that of fuel .When the effect of the variation of the average heat transfer coefficient on the reactivity plays a leading role in the process , the stronger the rolling motion is , the higher the average heating power is .However ,when the effect of the variation for the average friction coefficient on the reactivity takes the lead , the stronger the rolling motion is ,the lower the average heating power is .