| contributor author | Changkun Chen | |
| contributor author | Christophe Nicolet | |
| contributor author | Koichi Yonezawa | |
| contributor author | Mohamed Farhat | |
| contributor author | Yoshinobu Tsujimoto | |
| contributor author | Francois Avellan | |
| date accessioned | 2017-05-09T00:28:29Z | |
| date available | 2017-05-09T00:28:29Z | |
| date copyright | April, 2008 | |
| date issued | 2008 | |
| identifier issn | 0098-2202 | |
| identifier other | JFEGA4-27307#041106_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/138249 | |
| description abstract | One-dimensional stability analysis of a hydraulic system composed of a penstock, a runner, and a draft tube was carried out to determine the cause of the full load draft tube surge. It is assumed that the cavity volume at the runner exit is a function of the pressure at the vortex core evaluated from the instantaneous local pressure at the runner exit and an additional pressure decrease due to the centrifugal force on the swirling flow. It was found that the diffuser effect of the draft tube has a destabilizing effect over all flow rates, while the swirl effects stabilize∕destabilize the system at larger∕smaller flow rates than the swirl-free flow rate. Explanations of the destabilizing mechanism are given for the diffuser and swirl flow effects. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | One-Dimensional Analysis of Full Load Draft Tube Surge | |
| type | Journal Paper | |
| journal volume | 130 | |
| journal issue | 4 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.2903475 | |
| journal fristpage | 41106 | |
| identifier eissn | 1528-901X | |
| keywords | Flow (Dynamics) | |
| keywords | Stress | |
| keywords | Diffusers | |
| keywords | Equations | |
| keywords | Surges | |
| keywords | Pressure AND Cavities | |
| tree | Journal of Fluids Engineering:;2008:;volume( 130 ):;issue: 004 | |
| contenttype | Fulltext | |
