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Computational fluid dynamics models and corresponding reduced-order models are compared with the results of a recent set of experiments on dual model scale impinging jets conducted at the Pennsylvania State University high speed jet aeroacoustics facility. Two studies are conducted comparing CFD and experiment: (1) supersonic jet plume analysis and (2) comparison of the pressure distributions on the underside of a lift plate as a function of nozzle pressure ratio and height above the ground. Results generally show good agreement between CFD and the experiment. However, there is clear room for improvement with CFD, specifically related to over predicting the strength of the pressure differential due to fountain flow impingement on the underside of the lift plate. Additionally, reduced-order modeling techniques are applied to CFD solutions in order to conduct a large scale parametric study. This study revealed the effect various parameters have on specific outputs of interest, including: suckdown force, peak heat flux, outwash velocity, and several others. A computational cost analysis demonstrates the parametric study would have been impractical without the reduced-order modeling effort.

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