Some Characteristics of High Waves in Closed Channels Approaching Kelvin-Helmholtz InstabilitySource: Journal of Fluids Engineering:;1977:;volume( 099 ):;issue: 002::page 339Author:E. Kordyban
DOI: 10.1115/1.3448758Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: The characteristics of water waves produced by flowing air in closed channels were studied to uncover the effects of surface pressure variation. From theoretical considerations, it is proposed that the point of onset of the Kelvin-Helmholtz instability for such waves may be found from 1.35 ρaρw Vc2ghc = 1 Photographs of internal flow patterns and wave shapes confirm the occurrence of this instability, but the theoretically predicted reduction in wave celerity does not occur. The wave celerity for high waves was found to be predictable by the formula C = 0.191 gL tanh 2πhwL1/2 The measured height to length ratios for the highest observed waves are of the order of 0.1.
keyword(s): Waves , Closed channels , Pressure , Water waves , Internal flow , Formulas AND Shapes ,
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| contributor author | E. Kordyban | |
| date accessioned | 2017-05-08T23:03:11Z | |
| date available | 2017-05-08T23:03:11Z | |
| date copyright | June, 1977 | |
| date issued | 1977 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-26915#339_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/90054 | |
| description abstract | The characteristics of water waves produced by flowing air in closed channels were studied to uncover the effects of surface pressure variation. From theoretical considerations, it is proposed that the point of onset of the Kelvin-Helmholtz instability for such waves may be found from 1.35 ρaρw Vc2ghc = 1 Photographs of internal flow patterns and wave shapes confirm the occurrence of this instability, but the theoretically predicted reduction in wave celerity does not occur. The wave celerity for high waves was found to be predictable by the formula C = 0.191 gL tanh 2πhwL1/2 The measured height to length ratios for the highest observed waves are of the order of 0.1. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Some Characteristics of High Waves in Closed Channels Approaching Kelvin-Helmholtz Instability | |
| type | Journal Paper | |
| journal volume | 99 | |
| journal issue | 2 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.3448758 | |
| journal fristpage | 339 | |
| journal lastpage | 346 | |
| identifier eissn | 1528-901X | |
| keywords | Waves | |
| keywords | Closed channels | |
| keywords | Pressure | |
| keywords | Water waves | |
| keywords | Internal flow | |
| keywords | Formulas AND Shapes | |
| tree | Journal of Fluids Engineering:;1977:;volume( 099 ):;issue: 002 | |
| contenttype | Fulltext |