Determination of epsilon for Omega vortex identification method
| Autor: | Yiqian Wang, Xiangrui Dong, Yinlin Dong, Chaoqun Liu, Yuning Zhang, Xiao-ping Chen |
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| Rok vydání: | 2018 |
| Předmět: |
Turbulence
020209 energy Mechanical Engineering Mathematical analysis Reynolds number 02 engineering and technology Function (mathematics) Vorticity Condensed Matter Physics 01 natural sciences 010305 fluids & plasmas Vortex Open-channel flow Boundary layer symbols.namesake Flow (mathematics) Mechanics of Materials Modeling and Simulation 0103 physical sciences 0202 electrical engineering electronic engineering information engineering symbols Mathematics |
| Zdroj: | Journal of Hydrodynamics. 30:541-548 |
| ISSN: | 1878-0342 1001-6058 |
| DOI: | 10.1007/s42241-018-0066-x |
| Popis: | In the present paper, epsilon (e) in the Omega vortex identification criterion (Ω method) is defined as an explicit function in order to apply the Ω method to different cases and even different time steps for the unsteady cases. In our method, e is defined as a function relating with the flow without any subjective adjustment on its coefficient. The newly proposed criteria for the determination of e is tested in several typical flow cases and is proved to be effective in the current work. The test cases given in the present paper include boundary layer transition, shock wave and boundary layer interaction, and channel flow with different Reynolds numbers. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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