Numerical Simulations of Mixing Shear Layers by the Vortex Method with the Diffusion Velocity Model

The vortex method with the diffusion velocity model was utilized to simulate mixing shear layers. Our numerical results of the mean-velocity profiles, the momentum thickness and the local width of the mixing layer, at Re=1.8×105, are in good agreement with the experimental results by Oster Wygnanski...

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Veröffentlicht in:Nihon Kikai Gakkai rombunshuu. B hen 1995/03/25, Vol.61(583), pp.800-805
Hauptverfasser: Ogami, Yoshifumi, Adachi, Hirofumi, Fujiwara, Yoshiki, Hosokawa, Tsutomu
Format: Artikel
Sprache:jpn
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Zusammenfassung:The vortex method with the diffusion velocity model was utilized to simulate mixing shear layers. Our numerical results of the mean-velocity profiles, the momentum thickness and the local width of the mixing layer, at Re=1.8×105, are in good agreement with the experimental results by Oster Wygnanski. Our results also show that the momentum thickness and the local width of the mixing layer increase, and the turbulent intensity decreases as Re number decreases. The similarity of the mean-velocity profiles is observed even when Re number changes.
ISSN:0387-5016
1884-8346
DOI:10.1299/kikaib.61.800