Evaluation of the closure hypothesis in the Launder–Reece–Rodi rapid pressure–strain model

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ABSTRACTThe derivation of the Launder–Reece–Rodi (LRR) stress transport model assumes that the rapid pressure–strain correlation is a function of the Reynolds stresses. This model is compared to a model derived from an approximate solution of the equation satisfied by the two-point correlation tensor. The comparison suggests that the assumption of functional dependence used to derive the LRR model lacks fundamental justification.