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Interaction boundary layer theory applied to a benchmark flow problem
Author(s) -
Braun Stefan
Publication year - 2017
Publication title -
pamm
Language(s) - English
Resource type - Journals
ISSN - 1617-7061
DOI - 10.1002/pamm.201710282
Subject(s) - laminar flow , adverse pressure gradient , boundary layer , reynolds number , suction , mechanics , turbulence , flow (mathematics) , flow separation , pressure gradient , hele shaw flow , mathematics , open channel flow , physics , compressibility , thermodynamics
Consider planar, incompressible laminar high Reynolds number ( Re ) flow between two parallel plates: fluid is removed through the permeable upper wall in order to generate adverse pressure gradient conditions in mean flow direction. As a consequence of relatively weak suction, the boundary layer at the impermeable lower wall is forced to separate locally. The corresponding reverse flow region (separation bubble) is known to react very sensitively to perturbations of any kind and typically undergoes rapid transition to the turbulent flow state. The present paper briefly summarizes the current status of the corresponding asymptotic flow description in the limit as Re → ∞. (© 2017 Wiley‐VCH Verlag GmbH & Co. KGaA, Weinheim)