CAJ | 학술논문

基于蒙特卡罗方法进行燃耗计算时，随着燃耗加深，燃耗的计算误差逐渐增大。本文针对蒙特卡罗方法的燃耗计算误差进行研究，并采取修正措施改善燃耗计算的精度。结果表明：采用无偏差最小方差（UMV）修正可改善统计误差的传递效应，采用密度修正可保证蒙特卡罗输运计算的准确性，在此基础上局部优化燃耗截面库，进一步改善了燃耗计算的精度，为其工程应用奠定了基础。
기우몽특잡라방법진행연모계산시，수착연모가심，연모적계산오차축점증대。본문침대몽특잡라방법적연모계산오차진행연구，병채취수정조시개선연모계산적정도。결과표명：채용무편차최소방차（UMV）수정가개선통계오차적전체효응，채용밀도수정가보증몽특잡라수운계산적준학성，재차기출상국부우화연모절면고，진일보개선료연모계산적정도，위기공정응용전정료기출。
Based on the Monte Carlo method for burnup calculations ,the errors increase as a function of burnup .The errors of Monte Carlo burnup calculations were studied in this paper ,the modification measures were used which could improve the accuracy of burnup calculation . T he results show that , the effect of statistical error propagation would be reduced by unbiased minimum variance (UMV) modification ,the exactitude of Monte Carlo transport calculation would be ensured by density modification ,and the accuracy would be improved further by local optimization of burnup cross‐section library ,w hich create conditions for engineering application .