ADS散裂靶启动瞬态响应特性分析研究

Start-up Transient Analysis of ADS Spallation Target

  • 摘要: 散裂靶是加速器驱动的次临界系统(ADS)中反应堆与加速器耦合的部件。本工作对一种典型的有窗散裂靶设计在启动瞬态下的响应规律进行探究,利用商用软件ANSYS进行热工水力计算及热应力分析。计算结果表明:在阶跃启动工况下,靶窗热应力在束流启动后0.5 s内达到最大值;在线性启动工况下,靶窗最大应力出现在束流启动开始后和结束前的0.5 s内。在两种启动工况下,散裂靶的各项热工参数均低于设计限值,其完整性不会遭到破坏。

     

    Abstract: Spallation target coupling the sub-critical reactor and the proton accelerator is the crucial part of accelerator driven sub-critical system (ADS). In this paper, thermal-hydraulic behavior and thermal stress response of a typical window target were investigated under start-up transient conditions by using the commercial software ANSYS. The results show that thermal stress in the target window reaches the maximum value at 0.5 s after the beam jump. Under beam ramp mode, the thermal stress reaches the maximum value among the half second after the beginning and before the end of the transient. The integrity of the spallation target can be guaranteed under the two different beam start-up transient modes.

     

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