Particle image velocimetry experiments were performed to study the impact of realistic
roughness on the spatial structure of wall turbulence at moderate Reynolds number. This …

Turbulence measurements for rough-wall boundary layers are presented and compared to
those for a smooth wall. The rough-wall experiments were made on a woven mesh surface …

Turbulence measurements for a zero pressure gradient boundary layer over a two-
dimensional roughness are presented and compared to previous results for a smooth wall …

Measurements are presented from turbulent boundary layers over periodic two-and three-
dimensional roughness. Cases with transverse rows of staggered cubes and cases with …

本文采用时间解析的二维粒子图像测速技术, 对零压力梯度光滑以及汇聚和发散沟槽表面平板
湍流边界层统计特性和流动结构进行了研究. 结果表明在垂直于汇聚和发散沟槽表面的对称平面 …

Porous walls are a widely used passive flow control technique, which shows potential in
reducing skin friction and mitigating flow-introduced noise. In the present study, porous …

Turbulence measurements were made in smooth-wall boundary layers subject to changing
pressure gradients. Cases were documented over a range of Reynolds numbers and …

The effects of bed roughness, isolated from those of bed permeability, on the vertical
transport processes across the sediment–water interface (SWI) are not well understood. We …

The unsteady wake dynamics of two finite wall-mounted cylinders of unequal height and
arranged in tandem are investigated using time-resolved particle image velocimetry (TR …

We examine the turbulent boundary layers developing over convergent-divergent riblets
(CD riblets) with three different heights (h+= 8, 14, and 20) at Re θ= 723 using particle image …