Abstract
The weak-equilibrium condition, which is the basis in the development of algebraic Reynolds stress models is assessed in the prediction of fully developed turbulent channel flow under the influence of system rotation. The budget of the various terms of the exact transport equation for the anisotropy tensor is evaluated by using a DNS database. Two diffusive transport constraints are evaluated by using the DNS data. The results show that neither of them can hold for the near-wall region. An asymptotic analysis of the near-wall behavior is performed and an alternative form of the diffusive transport constraint is proposed. The analysis shows that the proposed alternative diffusive transport constraint has the potential to improve the predictive ability of the resultant ARSM.
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Qiu, JF., Obi, S. & Gatski, T.B. Evaluation of Extended Weak-Equilibrium Conditions for Fully Developed Rotating Channel Flow. Flow Turbulence Combust 80, 435–454 (2008). https://doi.org/10.1007/s10494-008-9132-8
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DOI: https://doi.org/10.1007/s10494-008-9132-8