INL在棱镜气体冷却反应器下腔室比例模型上获得流动现象基准数据来验证CFD模拟的有效性
The experimental program that is being conducted at the Matched Index-of-Refraction (MIR) FlowFacility at Idaho National Laboratory (INL) to obtain benchmark data on measurements of flowphenomena in a scaled model of the lower plenum of a typical prismatic gas-cooled reactor (GCR) using3-D Particle Image Velocimetry (PIV) is presented. A detailed description of the model, scaling, theexperimental facility, 3-D PIV system, measurement uncertainties, experimental procedures and samplesof the data sets that have been obtained are included. Samples of the data set that are presented includemean-velocity-field and turbulence data in an approximately 1:7 scale model of a region of the lowerplenum. This experiment has been selected as the first Standard Problem endorsed by the Generation IVInternational Forum.Results concentrate on the region of the lower plenum near its far reflector wall (away from the outletduct). Inlet jet Reynolds numbers (based on the jet diameter and the time-mean flow rate) areapproximately 4,300 and 12,400. The measurements reveal undeveloped, non-uniform flow in the inlet jetducts and complicated flow patterns in the modeled lower plenum. Data include three-dimensional vectorplots, data displays along the coordinate planes (slices) and charts that describe the component flows atspecific regions in the model. Information on inlet flow is also presented.