Unstable Waves of Jet Flows With Density InhomogeneitySource: Journal of Fluids Engineering:;1989:;volume( 111 ):;issue: 003::page 238Author:Y. T. Fung
DOI: 10.1115/1.3243636Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: Instability of axisymmetric jet flows of a fluid having a radius-dependent density is investigated. The necessary condition for the existence of unstable waves depends not only on the velocity profile but also on the density gradient as well. Large density gradients, positive or negative, have stabilizing effects. The semicircle theorem for amplified waves is valid in this case. It is shown by considering the top-hat type velocity profile that the velocity-dependent semicircle bound is the best possible.
keyword(s): Density , Flow (Dynamics) , Waves , Gradients , Fluids AND Theorems (Mathematics) ,
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| contributor author | Y. T. Fung | |
| date accessioned | 2017-05-08T23:30:16Z | |
| date available | 2017-05-08T23:30:16Z | |
| date copyright | September, 1989 | |
| date issued | 1989 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-27044#238_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/105554 | |
| description abstract | Instability of axisymmetric jet flows of a fluid having a radius-dependent density is investigated. The necessary condition for the existence of unstable waves depends not only on the velocity profile but also on the density gradient as well. Large density gradients, positive or negative, have stabilizing effects. The semicircle theorem for amplified waves is valid in this case. It is shown by considering the top-hat type velocity profile that the velocity-dependent semicircle bound is the best possible. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Unstable Waves of Jet Flows With Density Inhomogeneity | |
| type | Journal Paper | |
| journal volume | 111 | |
| journal issue | 3 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.3243636 | |
| journal fristpage | 238 | |
| journal lastpage | 242 | |
| identifier eissn | 1528-901X | |
| keywords | Density | |
| keywords | Flow (Dynamics) | |
| keywords | Waves | |
| keywords | Gradients | |
| keywords | Fluids AND Theorems (Mathematics) | |
| tree | Journal of Fluids Engineering:;1989:;volume( 111 ):;issue: 003 | |
| contenttype | Fulltext |