|
|||||
|
|
Analysis, in a free surface steady flow, of the interstitial velocity field inside a sedimentary bed |
|
| Authors: | Mustapha Kamel Mihoubi Michel Blorgey Ahmed Kettab |
| Institution: | Mustapha Kamel Mihoubi, Michel Bélorgey,Ahmed Kettab, |
| Abstract: | The objective of our study is to exploit ultrasonic Doppler velocimetry (UDV) to analyze the velocity field within a steady flow on a porous sedimentary bottom. Velocities are measured for several sedimentary beds, as well within the fluid vein as within the sediment. Our results highlight an exponential distribution of the velocities inside the sediment and a discontinuity of the velocity at the interface water–sediment, between the velocity in the free flow and the velocity within the sediment. These results highlight the need to base the analysis of sedimentary transport on the reality of the physical processes at the interface water–sediment. |
| Keywords: | Free surface steady flow Interstitial velocity field Porous beds Ultrasonic Doppler velocimetry (UDV)Mots clé s: É coulement permanent à surface libre Champ de vitesse interstitielle Lits poreux Vé locimé trie Doppler ultrasonique |
| 本文献已被 ScienceDirect 等数据库收录！ | |