A conventional invasive catheterization procedure is currently used to detect atherosclerotic
severity in coronary arteries. However, it is still challenging to measure multiple consecutive …

We numerically studied high-aspect-ratio channel flows with spanwise sidewalls, that is,
wide duct flows, in its subcritical turbulent transitional regime. The infinite channel flow is …

The subcritical transition in a two-dimensional channel flow is characterized by the
emergence of localized wave packet (LWP). In this paper, the nonlinear nonmodal …

In this letter, the effect of slip boundary on the origin of subcritical transition in two-
dimensional channel flows is studied numerically and theoretically. It is shown that both the …

Isolated turbulent bands observed in transitional channel flows have downstream heads and
inclined bulks at a characteristic angle. In the large-scale mean flow, a $\nu $-shape vortex …

We investigated the side-wall effects on turbulent bands in channel flow at transitional
Reynolds numbers by direct numerical simulations using the open source spectral-element …

Recently, many authors have investigated the origin and growth of turbulent bands in shear
flows, highlighting the role of streaks and their inflectional instability in the process of band …

The intermittent distribution of localized turbulent structures is a key feature of the subcritical
transitions in channel flows, which are studied in this paper with a wind channel and …

In many basic shear flows, such as pipe, Couette, and channel flow, turbulence does not
arise from an instability of the laminar state, and both dynamical states co-exist. With …

In this paper, the decay and growth of localized wave packet (LWP) in a two-dimensional
plane-Poiseuille flow are studied numerically and theoretically. When the Reynolds number …