Flows in Diffusers Interfered with Wake behind a Circular Cylinder

Effects of the wake behind a cylindrical stay upon internal flows and performances of rectangular cross-sectional diffusers were examined. When a stay of a moderate diameter is set at an appropriate position in the passage, the flow separation is controlled effectively. This seems to be mainly attri...

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Bibliographic Details
Published in:Bulletin of JSME 1982, Vol.25(207), pp.1382-1388
Main Authors: KANEMOTO, Toshiaki, TOYOKURA, Tomitaro
Format: Article
Language:English
Subjects:
Boundary Layer
Diffuser Performance
Interfered Flow
Internal Flow
Separation Control
Wake
Online Access:Get full text
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Summary:Effects of the wake behind a cylindrical stay upon internal flows and performances of rectangular cross-sectional diffusers were examined. When a stay of a moderate diameter is set at an appropriate position in the passage, the flow separation is controlled effectively. This seems to be mainly attributable to the blockage effect of the stay, the displacement effect of the wake flow and the increment of the turbulent energy. As the result, the performance of the diffuser with a fairly large divergent angle is improved. The flow pattern and pressure recovery are also discussed theoretically in this paper.
ISSN:0021-3764
1881-1426
DOI:10.1299/jsme1958.25.1382