The effect of shock‐wave / boundary‐layer interaction on turbulent spot propagation | Zendy

Jocksch A. | Zendy; Kleiser L. | Zendy

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The effect of shock‐wave / boundary‐layer interaction on turbulent spot propagation

Author(s) -

Jocksch A.,

Kleiser L.

Publication year - 2007

Publication title -

pamm

Language(s) - English

Resource type - Journals

ISSN - 1617-7061

DOI - 10.1002/pamm.200700643

Subject(s) - laminar flow , boundary layer , shock wave , shock (circulatory) , turbulence , mechanics , physics , bubble , oblique shock , flow separation , boundary (topology) , mathematics , mathematical analysis , medicine

We performed highly resolved large‐eddy simulations (LES) of transitional shock‐wave/boundary‐layer interactions (SW/ BLI) in which a turbulent spot passes through a laminar shock‐induced separation bubble. The initial condition consists of a laminar boundary‐layer solution over a flat plate with a superimposed oblique shock which induces a separation bubble on the plate. An upstream‐positioned initial disturbance triggers the turbulent spot that develops and encounters the SW/BLI region. Unlike the laminar boundary layer it does not separate but tunnels the SW/BLI region. Compared to a simulation without the SW/BLI region the spot growth is increased significantly during the passage. This finding supports the results of previous direct numerical simulations (DNS) in the literature. (© 2008 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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