Experimental and numerical studies on free surface flow of windowless target
Experimental and numerical studies on free surface flow of windowless target
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无窗靶自由表面流实验与数值研究
DOI：
10.1016/j.anucene.2012.01.010
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发表时间：
2012-05-01
影响因子：
1.9
通讯作者：
Cheng, X.
中科院分区：
文献类型：
--
作者：
Su, G. Y.;Gu, H. Y.;Cheng, X.
在加速器驱动系统（ADS）中，冷却液自由表面的形成和控制方法是实现无窗目标设计的关键技术之一。本文以水为模型流体，对标度无窗目标的自由表面流动进行了实验和数值研究。应用平面激光诱导荧光技术对散裂区内部的自由表面流态进行了可视化。在3 -5万雷诺数范围内进行了实验。研究了流动涡的结构和特征。实验结果表明，自由表面易受涡流运动的影响。此外，在实验条件下，分别使用LES和RANS （k-omega SST）湍流模型进行了CFD模拟。LES模型的数值计算结果与实验数据在流态和自由表面特性上有较好的一致性。(C) 2012 Elsevier Ltd.版权所有。
The formation and control method of the coolant free surface is one of the key technologies for the design of windowless targets in the accelerator driven system (ADS). In the recent study, experimental and numerical investigations on the free surface flow have been performed in a scaled windowless target by using water as the model fluid. The planar laser induced fluorescence technique has been applied to visualize the free surface flow pattern inside the spallation area. Experiments have been carried out with the Reynolds number in the range of 30,000-50,000. The structure and features of flow vortex have been investigated. The experimental results show that the free surface is vulnerable to the vortex movement. In addition, CFD simulations have been performed under the experimental conditions, using LES and RANS (k-omega SST) turbulence models, respectively. The numerical results of LES model agree qualitatively well with the experimental data related to both flow pattern and free surface behavior. (C) 2012 Elsevier Ltd. All rights reserved.