A new relationship between the roughness height and the main hydrodynamic and sediment parameters for plane beds under oscillatory conditions is presented. In order to derive such a relationship, a large data base encompassing plane-bed experiments was compiled from previous investigations and analyzed. Different methods to estimate the roughness height were investigated. Comparisons between the data and different existing predictive formulas for the bed roughness obtained from the literature were also performed. A relationship involving the grain size and Shields parameter only, which is commonly proposed, appeared to be insufficient to characterize the roughness. The roughness height was also found to be a function of the sediment density...
Whether or not a sediment particle is entrained from a channel bed is associated with both average b...
The extent to which turbulent structure is affected by bed-load transport is investigated experiment...
This experimental study consists of a series of full-scale experiments involving oscillatory boundar...
Data of flume experiments with bed forms are used to analyze and compare different roughness predict...
In this study a series of experiments were conducted on different beds and under different flow cond...
Data of flume experiments with bed forms are used to analyze and compare different roughness predict...
Reliable roughness models are of great importance, for example, when predicting water levels in rive...
The type of river flow affects the elevation variation of rough open channels. Broadly, river flows ...
The critical conditions for incipient sediment motion induced by oscillating-grid generated turbulen...
Tests have been done in a laboratory flume, to evaluate the influence of vertical rods of 3 mm dia o...
International audienceThere is a growing consensus that gravel-bed roughness should be parameterized...
Estimates of bed roughness used for predictions of sediment transport are usually derived either fro...
A series of laboratory tests were carried out to understand the extent of effect of roughness and Re...
This study focused on the hydraulic resistance, velocity distribution and turbulence structure of sh...
The effect of turbulent fluctuations on the threshold criteria for incipient grain motion over a wid...
Whether or not a sediment particle is entrained from a channel bed is associated with both average b...
The extent to which turbulent structure is affected by bed-load transport is investigated experiment...
This experimental study consists of a series of full-scale experiments involving oscillatory boundar...
Data of flume experiments with bed forms are used to analyze and compare different roughness predict...
In this study a series of experiments were conducted on different beds and under different flow cond...
Data of flume experiments with bed forms are used to analyze and compare different roughness predict...
Reliable roughness models are of great importance, for example, when predicting water levels in rive...
The type of river flow affects the elevation variation of rough open channels. Broadly, river flows ...
The critical conditions for incipient sediment motion induced by oscillating-grid generated turbulen...
Tests have been done in a laboratory flume, to evaluate the influence of vertical rods of 3 mm dia o...
International audienceThere is a growing consensus that gravel-bed roughness should be parameterized...
Estimates of bed roughness used for predictions of sediment transport are usually derived either fro...
A series of laboratory tests were carried out to understand the extent of effect of roughness and Re...
This study focused on the hydraulic resistance, velocity distribution and turbulence structure of sh...
The effect of turbulent fluctuations on the threshold criteria for incipient grain motion over a wid...
Whether or not a sediment particle is entrained from a channel bed is associated with both average b...
The extent to which turbulent structure is affected by bed-load transport is investigated experiment...
This experimental study consists of a series of full-scale experiments involving oscillatory boundar...