WAVE INDUCED VELOCITIES CLOSE TO A RIPPLED BED

Proceedings of the International Conference on Coastal Engineering

C.G. du Toit¹ 

[1] Department of Civil Engineering, University of Stellenbosch

关键词: ripples;    bed;    wave induced velocity;   

DOI  :  10.9753/icce.v18.%p

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

The results are reported of velocity measurements in oscillatory flow over rippled beds. Velocities were measured with a laserdoppler anemometer in both an oscillating tray rig and an oscillatory flow U-tube. Both self-formed and artificial ripples were examined. The results obtained in the two test rigs were compared and it was concluded that the flow fields obtained in the two cases were dynamically similar. Measurements of the flow field clearly showed the formation, growth and ejection of vortices, as well as a strong surge of fluid over the ripples during and after flow reversal.

【 授权许可】

Unknown