The Effect of Wake-Passing and Free-Stream Turbulence on Laminar Gas Turbine Blade Boundary LayersSource: Journal of Turbomachinery:;1994:;volume( 116 ):;issue: 003::page 384Author:D. Greenblatt
DOI: 10.1115/1.2929425Publisher: The American Society of Mechanical Engineers (ASME)
Abstract: A computational procedure has been developed that accounts for the combined time-mean effect of wake-passing and free-stream turbulence on laminar turbine blade boundary layers. The procedure has the advantage of being computationally efficient as well as providing a realistic model of the unsteady nature of the flow. The procedure yielded the parameter TuReD/σD/2 for characterizing the time-mean flow in the leading edge region and the parameter Γ (≡ 2T̃Tu2 σx /γ) for describing the flow downstream of the stagnation point. A provisional comparison with stagnation flow experimental data showed that the procedure may be more general than initially expected.
keyword(s): Wakes , Boundary layers , Gas turbines , Blades , Turbulence , Flow (Dynamics) , Turbine blades AND Stagnation flow ,
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| contributor author | D. Greenblatt | |
| date accessioned | 2017-05-08T23:45:48Z | |
| date available | 2017-05-08T23:45:48Z | |
| date copyright | July, 1994 | |
| date issued | 1994 | |
| identifier issn | 0889-504X | |
| identifier other | JOTUEI-28637#384_1.pdf | |
| identifier uri | http://yetl.yabesh.ir/yetl/handle/yetl/114540 | |
| description abstract | A computational procedure has been developed that accounts for the combined time-mean effect of wake-passing and free-stream turbulence on laminar turbine blade boundary layers. The procedure has the advantage of being computationally efficient as well as providing a realistic model of the unsteady nature of the flow. The procedure yielded the parameter TuReD/σD/2 for characterizing the time-mean flow in the leading edge region and the parameter Γ (≡ 2T̃Tu2 σx /γ) for describing the flow downstream of the stagnation point. A provisional comparison with stagnation flow experimental data showed that the procedure may be more general than initially expected. | |
| publisher | The American Society of Mechanical Engineers (ASME) | |
| title | The Effect of Wake-Passing and Free-Stream Turbulence on Laminar Gas Turbine Blade Boundary Layers | |
| type | Journal Paper | |
| journal volume | 116 | |
| journal issue | 3 | |
| journal title | Journal of Turbomachinery | |
| identifier doi | 10.1115/1.2929425 | |
| journal fristpage | 384 | |
| journal lastpage | 391 | |
| identifier eissn | 1528-8900 | |
| keywords | Wakes | |
| keywords | Boundary layers | |
| keywords | Gas turbines | |
| keywords | Blades | |
| keywords | Turbulence | |
| keywords | Flow (Dynamics) | |
| keywords | Turbine blades AND Stagnation flow | |
| tree | Journal of Turbomachinery:;1994:;volume( 116 ):;issue: 003 | |
| contenttype | Fulltext |