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Details van artikel 18 van 29 gevonden artikelen
| Titel: |
PIV Measurements of Side-Cavity Open-Channel Flows --Wando Model in Rivers -- |
| Auteur: |
I. Nezu K. Onitsuka |
| Verschenen in: |
Journal of visualization |
| Paginering: | Jaargang 5 (2002) nr. 1 pagina's 77-84 |
| Jaar: |
2002-09-06 |
| Inhoud: |
PIV measurements in side-cavity open-channel flows that simulate "Wando" in rivers, were conducted in a laboratory flume. Five types of side cavities were built by using a transparent plate at the wando flow. The pattern of the instantaneous flow fields was quite different from that of time-averaged ones. It was found that a vortex, which is located in the side cavity, is stable when the junction mouth between the side-cavity and main channel is narrow. In contrast, large-scale unstable vortices are generated semi-periodically when the junction mouth is wide. The free-surface fluctuations in and outside the wando were also measured by three sets of supersonic wave gauges. The amplitude of the water-surface fluctuations is large when the junction mouth is wide as compared with when its mouth is narrow. When the elevation of the free surface in the side-cavity is rising, its elevation in the main channel is falling, and vice versa when the junction mouth is wide. |
| Uitgever: |
IOS Press |
| Bronbestand: |
Elektronische Wetenschappelijke Tijdschriften |
Details van artikel 18 van 29 gevonden artikelen
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