DYNAMICS OF THE VELOCITY GRADIENT TENSOR IN TURBULENT BOUNDARY LAYER FLOW

摘要

Using Direct Numerical Simulation (DNS) of the Navier-Stokes equations for incompressible turbulent boundary layer flow, Conditional Mean Trajectories (CMTs) of invariants of the velocity gradient, rate-of-strain and rate-of-rotation tensors are computed and compared with solution trajectories of modelled equations for the evolution of the velocity gradient tensor.