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熔盐堆有效缓发中子份额β_(eff)的计算及分析 被引量:1

Calculation and Analysis of Effective Delayed Neutron Fraction β_(eff) in MSR
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摘要 有效缓发中子份额(β_(eff))是研究反应堆动态特性的重要参数。在熔盐堆(MSR)中,采用液体燃料,导致β_(eff)的计算与传统的采用固体燃料反应堆的计算方法不同。本文研究了MSRβ_(eff)的计算方法,并对嬗变熔盐堆(MOSART)的β_(eff)进行了计算,并分析了熔盐在堆外流动时间和熔盐入口速度对β_(eff)的影响。计算结果表明:固定堆芯入口速度,熔盐在堆芯外流动的时间增加,β_(eff)会减小;固定熔盐在堆芯外流动时间,熔盐在堆芯入口速度增大,β_(eff)会减小。 The effective delayed neutron fraction(β_(eff)) plays an extremely important role in the dynamics behavior of the reactors. In molten salt reactors(MSRs), because of the adoption of the fluid fuel, the calculation of the β_(eff) is different with that in the traditional solid-fuel reactor. This work concentrates on the calculation of the β_(eff) in MSRs. The β_(eff) of the MOSART was calculated and the effect of external-loop transit time and inlet velocity on the β_(eff) is analyzed in detail in this paper. The results indicate that the increasing of the external-transit time decreases the β_(eff), and the increasing of the inlet-velocity also decreases the β_(eff).
出处 《核动力工程》 EI CAS CSCD 北大核心 2017年第S1期37-40,共4页 Nuclear Power Engineering
关键词 有效缓发中子份额(βeff) 熔盐堆(MSR) 缓发中子先驱核 Effective delayed neutron fraction(βeff) Molten salt reactor(MSR) Delayed neutron precursors
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