An Evaluation of Mean Reynolds Stress Turbulence Models: The Triple Velocity Correlation

A four-parameter model is presented for the triple velocity correlation which appears in the mean Reynolds stress tensor equations of turbulence. A comparison with the closure models of Hanjalic and Launder 1, Daly and Harlow 2, Wyngaard, Cote´, and Rao 3, and Shir 4, in the context of existing experimental data, indicates that the proposed model is superior. It is also demonstrated that, of the one-parameter models, the Hanjalic-Launder model best approximates the data. Due to the complexity of the four-parameter representation, it is recommended that the Hanjalic-Launder model be used for computational purposes.