A vortex is intuitively recognized as the rotational/swirling motion of fluids, but a rigorous and
universally-accepted definition is still not available. Vorticity tube/filament has been …

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 …

A vortex is intuitively recognized as the rotational/swirling motion of the fluids. However, an
unambiguous and universally accepted definition for vortex is yet to be achieved in the field …

A new vortex identification criterion called Ω-method is proposed based on the ideas that
vorticity overtakes deformation in vortex. The comparison with other vortex identification …

Most of the current Eulerian vortex identification criteria, including the Q criterion and the λ ci
criterion, are exclusively determined by the eigenvalues of the velocity gradient tensor or the …

This article discusses the description of wall-bounded turbulence as a deterministic high-
dimensional dynamical system of interacting coherent structures, defined as eddies with …

Vortex is one of typical structures of the unsteady flow inside the hydroturbines, leading to
significant pressure fluctuation, prominent vibration of the units, and fatigue of turbine …

We review wall-bounded turbulent flows, particularly high–Reynolds number, zero–pressure
gradient boundary layers, and fully developed pipe and channel flows. It is apparent that the …

水轮机作为水电能源开发的核心机械装备, 其性能的优劣决定了水电能源的开发利用率.
在现代科技进步的推动下, 水轮机技术也取得了长足发展. 我国水轮机技术的发展经历了引进 …

Wall-bounded turbulent flows at high Reynolds numbers have become an increasingly
active area of research in recent years. Many challenges remain in theory, scaling, physical …