Abstract
The present study uses large eddy simulation to examine the role of small-scale turbulence within a transitional separation bubble. In addition, several large eddy simulation parameters and models are studied to show their effect on the computations. Generally, the role of small-scale turbulence is minor. The inclusion of a small-scale turbulence model leads to an increase in the time-averaged separation bubble length and a slight reduction in the peak of the coefficient of pressure distribution near reattachment. The numerical simulation with the small-scale turbulence model produces results which more closely predict the experimental data than the simulation without the model. Increasing the filter width or increasing the Smagorinsky coefficient reduces the peak in the coefficient of pressure distribution and causes the momentum thickness to agree more closely with the experimental data. The presence of a model for the cross stress and Leonard stress terms affects the results only slightly.
| Original language | English (US) |
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| Title of host publication | Separated and Complex Flows |
| Editors | M.V. Otugen, M. Kiya, J.C. Dutton, B. Reichert, G.C. Vradis |
| Pages | 151-158 |
| Number of pages | 8 |
| Volume | 217 |
| State | Published - 1995 |
| Event | Proceedings of the 1995 ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition - Hilton Head, SC, USA Duration: Aug 13 1995 → Aug 18 1995 |
Other
| Other | Proceedings of the 1995 ASME/JSME Fluids Engineering and Laser Anemometry Conference and Exhibition |
|---|---|
| City | Hilton Head, SC, USA |
| Period | 8/13/95 → 8/18/95 |
All Science Journal Classification (ASJC) codes
- General Engineering