Multi-Aspect Solutions for Moving Vehicle Testing

Abstract : This paper reviews an integrated testing approach for investigating the effects of fluid dynamic phenomena on the performance of moving vehicles and their models. This approach is based upon the combination of advanced optical diagnostic techniques with computational fluid dynamic models to provide a comprehensive understanding of a vehicle's aerodynamic and hydrodynamic performance. Advanced optical diagnostic techniques that will be discussed include: pressure sensitive paint (PSP - surface flow visualization, aerodynamic loads), temperature sensitive paint (TSP - temperature map and heat transfer), surface stress sensitive films (S3F - pressure and shear force maps), and stereovideogrammetry (model movement under loading). The current state of the art of these techniques allows to develop integrated systems approach for aerodynamic testing which includes: hardware, acquisition-analysis software, and a comprehensive comparison with CFD predictions.

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