Modeling wall turbulence remains a major challenge, as a sufficient physical understanding
of these flows is still lacking. In an effort to move toward a physics-based model, AA …

In the present study, the physical meaning of vorticity is revisited based on the Liutex-Shear
(RS) decomposition proposed by Liu et al. in the framework of Liutex (previously called …

Reynolds-number effects in the adverse-pressure-gradient (APG) turbulent boundary layer
(TBL) developing on the suction side of a NACA4412 wing section are assessed in the …

Six core issues for vortex definition and identification concern with (1) the absolute
strength,(2) the relative strength,(3) the rotational axis,(4) the vortex core center,(5) the …

The near wake of a hemisphere immersed in a laminar boundary layer is studied utilizing
time-resolved tomographic particle image velocimetry (TPIV). Focus is placed on the three …

Self-similarity of wall-attached coherent structures in a turbulent channel at is explored by
means of resolvent analysis. In this modelling framework, coherent structures are …

Complete transition to turbulence via first-and second-mode oblique breakdown in a high-
speed boundary layer at Mach 4.5 is studied by direct numerical simulations (DNS) and …

Direct numerical simulations of the tip-leakage flow, generated by a gap between a straight
National Advisory Committee for Aeronautics 0012 hydrofoil and the end wall of a channel …

We collect and discuss the results of our recent studies which show evidence of the
existence of a whole family of self-sustaining motions in wall-bounded turbulent shear flows …

To understand the generation mechanism of a hierarchy of multiscale vortices in a high-
Reynolds-number turbulent boundary layer, we conduct direct numerical simulations and …