ABSTRAKT

The weak-equilibrium condition, which is the basis in the development of algebraic Reynolds stress models, is assessed in the case of fully developed turbulent channel flow under the influence of system rotation. The budget of the various terms in the exact transport equation for the anisotropy tensor is evaluated using a DNS database. An asymptotic analysis of the near-wall behavior is performed and an alternative form of the diffusion/transport constraint is proposed. The analysis shows that the proposed alternative diffusion/transport constraint has the potential to improve the predictive ability of the ARSM.