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Surface -PIV measurements on shallow compound channel flows: Coherent flow structur es, horizontal mixing and dispersion
| Content Provider | Semantic Scholar |
|---|---|
| Author | Rummel, Andreas Sartini, Simone Stocchino, Alessandro Piatella, Alessandra Brocchini, Maurizio |
| Copyright Year | 2004 |
| Abstract | An experimental investigation based o n PIV analysis of free surface velocities forms the ba sis for the following analyses of specific features of macrovortices in compound channels. Dynamical properties are seen to strongly depend on the input discharge (low -discharge, intermediate -discharge and high - discharge conditions). The maximum streamwise mean velocity component increases with both discharge/downstream location and the bell -type crossflow prof ile of the mean streamwise ve locity, typical of the low/intermediate discharges, becomes non -mo notonic at high discharges (need of new types of self -similar solutions). The mean shear at the tran sition region decreases with in creasing discharge . This leads to the reduction of macrovortex generation at the transition region and a simultaneous increas e at the lateral walls. The size of macrovortices in the transition region is closely related to the channel geometry and the shear layer width is found to be almost constant. |
| File Format | PDF HTM / HTML |
| Alternate Webpage(s) | http://www.dicat.unige.it/flubio/fellowspapers/rummel_et_al_HMEM2007.pdf |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
