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散裂靶件作为加速器和次临界堆芯的耦合部件,是ADS系统相关研究最主要的组成部分之一。无窗靶巧妙地利用了液体的自由液面特性,避免了质子束对结构材料直接轰击,是一种很有前景的散裂靶靶件形式。采用水作为实验工质搭建了一套无窗散裂靶水模拟实验台架,该实验系统覆盖了无窗散裂靶水模拟实验所需的流量及压力条件,采用粒子图像测速仪(PIV)对自由界面的流场进行可视化观察与分析,得到了自由界面的基本表征参数之间关系和可视化界面的流场信息。结果表明,无窗靶自由液面的位置和形状受到回路整体流量、压力和靶件几何尺寸的影响。
As a coupling component of accelerator and subcritical core, a spallation target is one of the most important components in the related research of ADS system. Windowless targets clever use of the liquid free surface features, to avoid proton beam on the direct bombardment of structural materials, is a very promising form of target spallation target. A set of windowless spallation target water simulation experiment bench was set up by using water as the experimental working fluid. The experimental system covered the flow and pressure conditions required by the simulation experiment of the windowless spallation target water. Particle image velocimetry (PIV) The visualization and analysis of the flow field in the free interface are carried out. The relationship between the basic characterization parameters of the free interface and the flow field information of the visual interface is obtained. The results show that the location and shape of the free surface of the window-free target are affected by the overall flow rate, pressure and target geometry.