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Fluid DynamicsPart 3 Boundary Layers$
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Anatoly I. Ruban

Print publication date: 2017

Print ISBN-13: 9780199681754

Published to Oxford Scholarship Online: January 2018

DOI: 10.1093/oso/9780199681754.001.0001

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Incipient Separation Near Corners

Incipient Separation Near Corners

(p.279) 4 Incipient Separation Near Corners
Fluid Dynamics

Anatoly I. Ruban

Oxford University Press

Chapter 4 analyses the transition from an attached flow to a flow with local recirculation region near a corner point of a body contour. It considers both subsonic and supersonic flow regimes, and shows that the flow near a corner can be studied in the framework of the triple-deck theory. It assumes that the body surface deflection angle is small, and formulates the linearized viscous-inviscid interaction problem. Its solution is found in an analytic form. It also presents the results of the numerical solution of the full nonlinear problem. It shows how, and when, the separation region forms in the boundary layer. In conclusion, it suggests that in the subsonic flow past a concave corner, the solution is not unique.

Keywords:   incipience of separation, corner flows, linear interaction problem, subsonic flow regime, supersonic flow regime, triple-deck theory, viscous-inviscid interaction problem

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