RANS calculations for zero pressure gradient flat plate transition are made using the 7-equation MARVS Reynolds stress model. The results agree well with experimental data (Tu = 0.5% to 5%) - both in terms of the start of transition and the shape and orientation (eigenvalues, eigenvectors) of the Reynolds stress tensors. Rapid Distortion Theory, a contributor to the model, explains the streaky, low production, behavior of turbulence in boundary layers prior to transition where the mean velocity strain-rate, made dimensionless with the specific turbulence spectral dissipation rate, is high.
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