基于流场数值模拟的ADS靶件结构的设计优化

Design Optimization of ADS Target Based on Numerical Simulations of Flow Field

摘要: 采用通用的计算流体力学(CFD)软件PHOENICS3 3和BFC计算网格生成技术,对加速器驱动次临界系统(ADS)靶件的流场进行数值模拟计算。结果表明:束窗下方导流板起引导流体沿束窗表面流动的作用,消除了束窗两侧下方较大的旋涡,对于改善束窗附近流体的流动结构、提高束窗表面及散裂靶的换热,效果显著。

Abstract: Numerical simulations of flow field are performed by using the PHOENICS 3.3 code for the proposed spallation target of acceleratordriven subcritical system(ADS). The fluid motion in the target is axisymmetric and is treated as a 2D steadystate problem. A bodyfitted coordinate system(BFC) is chosen and a twodimensional mesh of the flow channel is generated. Results are presented for the ADS target under both upward and downward flow, and for the target with different window shapes and diffuser plates under downward flow.