To draw concrete pictures of the hierarchy of multiscale coherent vortices in turbulence
behind a cylinder and to reveal their sustaining mechanism, we conduct direct numerical …

The coherent structures arising in the turbulent flow around a three-dimensional stepped (or
step) cylinder are studied through direct numerical simulation. This geometry is widespread …

The three-dimensional turbulent flow around a Flettner rotor, ie an engine-driven rotating
cylinder in an atmospheric boundary layer, is studied via direct numerical simulations (DNS) …

In the gap region of tandem cylinders, within the reattachment regime, bi-stability is seen to
be cellular. Direct numerical simulations at a Reynolds number of 500, and a gap ratio of …

The wake behind a step cylinder [consisting of a small diameter cylinder (d) and a large
diameter cylinder (D)] with diameter ratio D/d= 2 at Reynolds number Re D= 200 (the mode …

This study investigates the flow behavior over roughened inline cylinders for postcritical flow,
a parameter space with relatively little prior scrutiny. Two cylinders of the same relative …

This paper presents a numerical study on the flow around two tandem circular cylinders
beneath a free surface at a Reynolds number of. A jet-like flow accompanied by a shear …

Turbulent flow around curved tandem cylinders has been studied for the first time, by means
of direct numerical simulation. The convex configuration was used, with a nominal gap ratio …

Flow around curved tandem cylinders in the convex configuration has been studied by
means of direct numerical simulations, for a Reynolds number of 500 and a nominal gap …

To investigate the characteristics of the bi-stable flow at subcritical Reynolds numbers, large
eddy simulation is adopted to simulate the crossflow around two tandem circular cylinders at …