Vortex Motion around Large Roughness Elements in Open Channel Flow

Effects of very-large roughness in turbulent channel flow

The streamwise velocity statistics in fully-developed rough-wall channel flow have been investigated over gritand mesh-type surface topologies. The flow was demonstrated to be fully-developed and two-dimensional up to the fourth moment of velocity. Though the flow over both surface types appear to exhibit a limited logarithmic region, the regions of inner and outer scaling over the mesh surface...

effect of sub-grid scales on large eddy simulation of particle deposition in a turbulent channel flow

چکیده ندارد.

Bow-wave-like hydraulic jump and horseshoe vortex around an obstacle in a supercritical open channel flow

Very-large-scale motions in rough-bed open-channel flow

Long-duration particle image velocimetry measurements in rough-bed open-channel flows (OCFs) reveal that the pre-multiplied spectra of the streamwise velocity have a bimodal distribution due to the presence of largeand very-large-scale motions (LSMs and VLSMs, respectively). The existence of VLSMs in boundary layers, pipes and closed channels has been acknowledged for some time, but strong supp...

Large eddy simulation of stably stratified open channel flow