Author： Terekhov V. Yarygina N. Smulsky Ya.
Publisher： Springer Publishing Company
ISSN： 0021-8944
Source： Journal of Applied Mechanics and Technical Physics, Vol.48, Iss.1, 2007-01, pp. : 85-90
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Abstract
Results of an experimental study of a turbulent flow past a flat rib with different angles of alignment toward the flow and with different rib heights are presented. The angle of rib alignment toward the flow is varied within Φ = 50–90°. Vortex formation is visualized, and the coordinates of the reattachment line are determined. It is demonstrated that a decrease in the angle Φ forms a reattachment region and makes the flow behind the rib more three-dimensional. Pressure coefficients are measured in different longitudinal sections of the channel behind the rib with a varied angle of rib alignment Φ. Temperature fields on the surface behind the rib are measured by means of an infrared imager and by thermocouples, and the corresponding heat-transfer coefficients are calculated. The effect of the angle of rib alignment toward the flow and the rib height on dynamic and thermal characteristics of the separated flow is analyzed.
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