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Automotive vehicles operate in complex, transient aerodynamic conditions that can potentially influence their operational efficiency, performance and safety. ...Direct comparison of transient pressure at 24 locations across the front and rear bumpers and over the centerline of the vehicles show relatively good agreement between the two methodologies; establishing the moving-model facility as a viable reduced-scale methodology for investigating transient aerodynamics of automotive vehicles. Analysis of the time-resolved pressure measurements provides insight into the sensitivity of the surface pressure to transient crosswind; with indications that transient characteristics can only be captured with transient modelling of the crosswind-vehicle interaction.

Usually, automotive wind tunnels contain an open test section, which results in a shear layer developing on the edge of the jet.