论文标题
Allegro CFD基准练习的第一部分和第二部分的初步论文
Preliminary Thesis on the First and Second Part of the ALLEGRO CFD Benchmark Exercise
论文作者
论文摘要
在BME（布达佩斯技术与经济学大学）NTI（核技术研究所），已经建立了一个7针杆束测试部分，以调查冷却液在这种设计中的液压行为，并开发CFD模型，可以正确模拟Allegro核心中的流量条件。 Pirouette（BME的PIV杆束测试设施）是一种测试设施，旨在研究各种核燃料组装杆束的新兴流量条件。该测量方法基于粒子图像速度法（PIV）与难治（MIR）方法匹配的匹配。在测试循环中，有必要安装能够在杆束之前调节速度场的流直型。 CFD模拟的结果可用于提高对杆束测试部分中入口条件的理解。基准的第二部分涉及位于测试部分中7针杆束中速度场的3D CFD建模。测试部分的几何形状将以易于使用的3D格式（.OBJ，.STP或.STL）提供给参与者。
At BME (Budapest University of Technology and Economics) NTI (Institute of Nuclear Technics), a 7 pin rod bundle test section has been built in order to investigate the hydraulic behavior of the coolant in such design and to develop CFD models that could properly simulate the flow conditions in the ALLEGRO core. PIROUETTE (PIv ROd bUndlE Test faciliTy at bmE) is a test facility, which was designed to investigate the emerging flow conditions in various nuclear fuel assembly rod bundles. The measurement method is based on Particle Image Velocimetry (PIV) with Matching of Index of Refractory (MIR) method. In the test loop, it was necessary to install a flow straightener that was able to condition the velocity field before the rod bundle. The results of CFD simulations could be used to improve the understanding of the inlet conditions in the rod bundle test section.The second part of the benchmark deals with the 3D CFD modeling of the velocity field within the 7 pin rod bundle placed in the test section. The geometry of the test section will be given to the participants in an easy-to-use 3D format (.obj, .stp or .stl).
