Low-Reynolds-number second-moment closure without wall-reflection redistribution terms

Abstract A full second-moment turbulence closure applicable right up to a wall is proposed. The closure adopts a quasi-linear rapid model, but does not contain wall-reflection redistribution terms. We test the turbulence model in fully-developed channel flow, boundary layers in zero, adverse and favorable pressure gradients, and plane and round jets. The predictions are generally in good agreement with experiments and DNS, though discrepancies are present in normal stress profiles. The result encourages further testing of the model in various complex flows to establish a simple low-Reynolds-number second-moment closure for both wall and free flows without wall-reflection redistribution terms.