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The Spalart-Allmaras model incorporates some of the recent advances in turbulence modeling that make it an excellent choice for prediction of industrial turbulent flows. Comparisons between the k-Îµ model and Spalart-Allmaras models regularly show that Spalart-Allmaras has equal or superior accuracy for nearly all classes of flows. In addition to this, the Spalart-Allmaras model is more computationally efficient than k-Îµbecause it only solves a single transport equation. Bardina, et. al. provide an excellent overview of some leading turbulence models that users can use as a reference.