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1980•The Quarterly Journal of Mechanics and Applied MathematicsRequires access

A BOUNDARY-LAYER COLLISION IN A CURVED DUCT

K. Stewartson, Tuncer Cebeci, Keh‐Chin Chang

Open publisher page 68 citations

Abstract

It is shown that the boundary layer, generated at the entrance to a curved duct by an incoming flow at large values of the Dean number, develops a collision structure in the neighbourhood of the inner wall, after evolving for a finite distance down the duct. This result is not to be anticipated from the results of previous studies of the entry flow nor from theories of the fully-developed flow far down the duct, but it is nevertheless consistent with the precise results obtained to date. The implication of the phenomenon for the subsequent development of the core flow is discussed.

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What this paper is about

It is shown that the boundary layer, generated at the entrance to a curved duct by an incoming flow at large values of the Dean number, develops a collision structure in the neighbourhood of the inner wall, after evolving for a finite distance down the duct. This result is not to be anticipated from the results of previous studies of the entry flow nor from theories of the fully-developed flow far down the duct, but it is nevertheless consistent with the precise results obtained to date. The implication of the phenomenon for the subsequent development of the core flow is discussed.

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OpenAlex reports 68 citations for this work. Citation counts describe recorded attention and do not establish research quality.

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Available abstract

It is shown that the boundary layer, generated at the entrance to a curved duct by an incoming flow at large values of the Dean number, develops a collision structure in the neighbourhood of the inner wall, after evolving for a finite distance down the duct. This result is not to be anticipated from the results of previous studies of the entry flow nor from theories of the fully-developed flow far down the duct, but it is nevertheless consistent with the precise results obtained to date. The implication of the phenomenon for the subsequent development of the core flow is discussed.

Key concepts: Aerodynamics, Boundary layer, Boundary (topology), Duct (anatomy), Library science, Engineering, Aeronautics, Computer science

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