Effect of rotation on coherent structures in wall-bounded turbulence
Proper orthogonal decomposition (POD) is applied to a rotating channel turbulence database generated by direct numerical simulation (DNS) to investigate the effect of spanwise rotation on the coherent structures in wall-bounded flows. The POD analysis reveals the appearance of elongated counter-rota...
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| Main Authors: | , |
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| Format: | Conference Proceeding |
| Published: |
2018
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| Online Access: | https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84959165594&origin=inward http://cmuir.cmu.ac.th/jspui/handle/6653943832/45450 |
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| Institution: | Chiang Mai University |
| Summary: | Proper orthogonal decomposition (POD) is applied to a rotating channel turbulence database generated by direct numerical simulation (DNS) to investigate the effect of spanwise rotation on the coherent structures in wall-bounded flows. The POD analysis reveals the appearance of elongated counter-rotating vortical structures at both low and moderate rotation numbers. Increasing the rotation rate results in a higher number of these elongated vortices, while reduces their size. |
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