| VELOCITY FIELD AND RESISTANCE OF FLOW OVER ROUGH SURFACES WITH LARGE AND SMALL RELATIVE SUBMERGENCE |
| |
| 作者姓名： | Andreas DITTRICH Institut fuer Wasserbau und Kulturtechnik Universitet Karlsruhe Kaiserstr. Karlsruhe Germany Katinka KOLL Institut fuer Wasserbau und Kulturtechnik Universitet Karlsruhe Kaiserstr. Karlsruhe Germany |
| |
| 作者单位： | Andreas DITTRICH Institut fuer Wasserbau und Kulturtechnik，Universitet Karlsruhe，Kaiserstr. 12，76128 Karlsruhe，Germany Katinka KOLL Institut fuer Wasserbau und Kulturtechnik，Universitet Karlsruhe，Kaiserstr. 12，76128 Karlsruhe，Germany |
| |
| 摘 要： | LINTRODUCTIONPreciseknowledgeofthevelocityfieldandthecorrespondingresistanceofflowoverrollghsurfacesareofgreatimportanceformanypracticalproblemssuchastheestimationofthestabilitVofbedmaterialinerosiveriversortheremovalofaccumulatedfinesedimentfromthechannelandthelooseningofgravelbedmaterialbycontrolledreleaseofreservoirwater.Thelatterprocedure,calledflushingflows,isfrequentlyspecifiedtorestoreortomaintainaquatichabitat(WILCOCKetal.,1996).Dependingonwaterdepthhandroughnessheightk.(=equiv…
|
VELOCITY FIELD AND RESISTANCE OF FLOW OVER ROUGH SURFACES WITH LARGE AND SMALL RELATIVE SUBMERGENCE |
| |
| Andreas DITTRICH Institut fuer Wasserbau und Kulturtechnik,Universitet Karlsruhe,Kaiserstr. , Karlsruhe,Germany Katinka KOLL Institut fuer Wasserbau und Kulturtechnik,Universitet Karlsruhe,Kaiserstr. , Karlsruhe,Germany.VELOCITY FIELD AND RESISTANCE OF FLOW OVER ROUGH SURFACES WITH LARGE AND SMALL RELATIVE SUBMERGENCE[J].International Journal of Sediment Research,1997(3). |
| |
| Authors: | Andreas DITTRICH Institut fuer Wasserbau und Kulturtechnik Universitet Karlsruhe Kaiserstr Karlsruhe Germany Katinka KOLL Institut fuer Wasserbau und Kulturtechnik Universitet Karlsruhe Kaiserstr Karlsruhe Germany |
| |
| Institution: | Andreas DITTRICH Institut fuer Wasserbau und Kulturtechnik,Universitet Karlsruhe,Kaiserstr. 12,76128 Karlsruhe,Germany Katinka KOLL Institut fuer Wasserbau und Kulturtechnik,Universitet Karlsruhe,Kaiserstr. 12,76128 Karlsruhe,Germany |
| |
| Abstract: | Important formulas that describe the flow field over rough surfaces with different relative submergence are summarized and explained. It turns out that the flow field over rough surfaces with small relative submergence deviates remarkably from the one with large relative submergence. Differences in flow resistance as well as velocity and turbulence intensity distribution are documented with own data and data from the literature. The inconsistency in the results of velocity distribution and flow resistance are pointed out and discussed. Finally, physically based explanations are given for the deviations of the results. |
| |
| Keywords: | Velocity distribution Turbulence intensity distribution Relative submergence |
| 本文献已被 CNKI 等数据库收录！ |
