| contributor author | Duquesne, Pierre | |
| contributor author | Maciel, Yvan | |
| contributor author | Deschأھnes, Claire | |
| date accessioned | 2017-05-09T01:29:18Z | |
| date available | 2017-05-09T01:29:18Z | |
| date issued | 2016 | |
| identifier issn | 0098-2202 | |
| identifier other | fe_138_01_011102.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/161309 | |
| description abstract | A threedimensional unsteady flow separation in the straight diffuser of a model bulb turbine is investigated using tuft visualizations, unsteady wall pressure sensors, and particle image velocimetry (PIV). Experimental results reveal a link between the flow separation zone extension and the sudden drop in turbine performances. The flow separation zone grows as the flow rate increases past the best efficiency operating point (OP). It starts on the bottom wall and expands azimuthally and upstream. It deviates and perturbs the flow far upstream. Despite high unsteadiness, a global separation streamline pattern composed of a saddle point and a convergence line emerges. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | Investigation of Flow Separation in a Diffuser of a Bulb Turbine | |
| type | Journal Paper | |
| journal volume | 138 | |
| journal issue | 1 | |
| journal title | Journal of Fluids Engineering | |
| identifier doi | 10.1115/1.4031254 | |
| journal fristpage | 11102 | |
| journal lastpage | 11102 | |
| identifier eissn | 1528-901X | |
| tree | Journal of Fluids Engineering:;2016:;volume( 138 ):;issue: 001 | |
| contenttype | Fulltext | |