Relaminarization of turbulent flow in the entrance region of a rapidly rotating channel

Abstract Second-moment closure predictions of developing turbulent flow in a plane channel subjected to rapid spanwise rotation are compared with experimental results. Near-wall effects are modelled by elliptic relaxation. Rapid pressure–strain interactions are accounted for by a non-linear, cubic model which employs variable coefficients and is consistent with the principle of material frame indifference (MFI) in the limit of two-dimensional turbulence. It is shown that the rotational-induced effect of the Coriolis force on the developing mean flow field and the turbulence quantities is well reproduced by the present approach. It is particularly encouraging that the experimentally observed relaminarization on the stabilized suction side of the channel could be predicted well.

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