Near critical laminar flow past an expansion ramp | Zendy

Kluwick Alfred | Zendy; Braun Stefan | Zendy; Szeywerth Rene | Zendy

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Near critical laminar flow past an expansion ramp

Author(s) -

Kluwick Alfred,

Braun Stefan,

Szeywerth Rene

Publication year - 2012

Publication title -

pamm

Language(s) - English

Resource type - Journals

ISSN - 1617-7061

DOI - 10.1002/pamm.201210218

Subject(s) - laminar flow , inviscid flow , mechanics , reynolds number , laminar sublayer , bifurcation , supercritical fluid , limit (mathematics) , physics , flow (mathematics) , mathematics , thermodynamics , classical mechanics , mathematical analysis , turbulence , nonlinear system , quantum mechanics

Steady two‐dimensional laminar flows past an expansion ramp are known to exist up to a critical ramp angle in the limit c as the Reynolds number tends to infinity. The theory of viscous‐inviscid interaction combined with a local bifurcation analysis is used to study the evolution of three‐dimensional unsteady perturbations if $|\alpha - \alpha_c| \ll 1$ for both sub‐ and supercritical conditions. Special emphasis is placed on the effects of controlling devices and the phenomenon of bubble bursting. (© 2012 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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