The Evaluation of the Boundary Vorticity by URANS and LES Methods
The role of concentrated vorticity in fluid dynamics phenomena, concerning both the vorticity creation at the boundary and the response to the flow field is not wholly understood. The Lighthill describes the vorticity production at a solid boundary as a slow diffusion of the vorticity similar to the...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
National Institute for Aerospace Research “Elie Carafoli” - INCAS
2015-12-01
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| Series: | INCAS Bulletin |
| Subjects: | |
| Online Access: | http://bulletin.incas.ro/files/malael__dumitrescu__cardos_vol_7_iss_4.pdf |
| Summary: | The role of concentrated vorticity in fluid dynamics phenomena, concerning both the vorticity creation at the boundary and the response to the flow field is not wholly understood. The Lighthill describes the vorticity production at a solid boundary as a slow diffusion of the vorticity similar to the Fourier heat conduction. In the paper it is shown that this mechanism associated to URANS method is not applied to the concentrated vorticity case, and the LES method better reproduces the flows involving concentrations vorticity. |
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| ISSN: | 2066-8201 2247-4528 |