Scaling parameters for a time- averaged separation bubble

A. J. Smits

doi:10.1115/1.3241805

Scaling parameters for a time- averaged separation bubble

A. J. Smits

Mechanical & Aerospace Engineering

Research output: Contribution to journal › Article › peer-review

22 Scopus citations

Abstract

A splitter plate is placed in the wake of a two-dimensional bluff body. The splitter plate is long enough for the separated flow behind the body to reattach on the splitter plate. The time-averaged properties of this "closed" separation bubble are investigated under a wide range of kinematic conditions. It is found that blockage reduces the base pressure coefficient (C_pb) and the distance to reattachment (l) but the relationship between l and C_pb is not obvious. The pressure distribution in the separated zone, scaled on C_pb and l, can be described by a universal curve. The usefulness of a slotted wall in reducing blockage effects on bluff body flows is shown to be limited in that the wall porosity affects only some properties of the separation bubble.

Original language	English (US)
Pages (from-to)	178-184
Number of pages	7
Journal	Journal of Fluids Engineering, Transactions of the ASME
Volume	104
Issue number	2
DOIs	https://doi.org/10.1115/1.3241805
State	Published - Jun 1982

All Science Journal Classification (ASJC) codes

Mechanical Engineering

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10.1115/1.3241805

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Scaling parameters for a time- averaged separation bubble

Abstract

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