Turbulence-resolving integral simulation for wall-bounded flows*

Integral methods for studying and predicting turbulent boundary layers were typically based on the Reynolds-averaged equations. This talk introduces a moment-of-momentum approach for simulating instantaneous integral equations for turbulent wall-bounded flows by resolving the unsteady dynamics of large and very-large scale motions on a two-dimensional wall-parallel grid. Turbulence-resolving integral simulations (TRIS) are performed for an open-channel flow configuration with relatively primitive closure approximations. Direct numerical simulations (DNS) are used to evaluate the performance of the TRIS models and assess potential improvements.