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The interacting boundary-layer flow due to a vortex approaching a cylinder

Published online by Cambridge University Press:  10 September 1997

Z. XIAO ,
O. R. BURGGRAF  and
A. T. CONLISK
Z. XIAO
Affiliation:
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210, USA
O. R. BURGGRAF
Affiliation:
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210, USA
A. T. CONLISK
Affiliation:
Department of Mechanical Engineering, The Ohio State University, Columbus, OH 43210, USA
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Abstract

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In this paper the solution to the three-dimensional and unsteady interacting boundary-layer equations for a vortex approaching a cylinder is calculated. The flow is three-dimensional and unsteady. The purpose of this paper is to enhance the understanding of the structure in three-dimensional unsteady boundary-layer separation commonly observed in a high-Reynolds-number flow. The short length scales associated with the boundary-layer eruption process are resolved through an efficient and effective moving adaptive grid procedure. The results of this work suggest that like its two-dimensional counterpart, the three-dimensional unsteady interacting boundary layer also terminates in a singularity at a finite time. Furthermore, the numerical calculations confirm the theoretical analysis of the singular structure in two dimensions for the interacting boundary layer due to Smith (1988).

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 346 , 10 September 1997 , pp. 319 - 343
Copyright
© 1997 Cambridge University Press