Turbulent flow over a plane symmetric sudden expansion

Journal Article · Sat Sep 01 00:00:00 EDT 1979 · J. Fluids Eng.; (United States)

DOI:https://doi.org/10.1115/1.3448974· OSTI ID:5555696

Smyth, R

Turbulent flow with separation and recirculation over a double backward facing step has been investigated experimentally. Time mean streamwise, transverse and cross-stream components of the velocity fluctuations, together with turbulence kinetic energy and Reynolds shear stresses, were measured using a laser Doppler anemometer, operating in the differential Doppler mode with forward scattering. Ordinary tap water was used in a closed loop flow system with a Reynolds number of 30,210 and significant changes of flow patterns, increases in turbulence kinetic energy, velocity fluctuations, and shear stresses were observed downstream of the step expansion.

• Research Organization: Univ. of Sheffield, England
• OSTI ID: 5555696
• Journal Information: J. Fluids Eng.; (United States), Journal Name: J. Fluids Eng.; (United States) Vol. 101:3; ISSN JFEGA
• Country of Publication: United States
• Language: English

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