Study of Mean- and Turbulent-Velocity Fields in a Large-Scale Turbine-Vane Passage | Zendy

D. A. Bailey | Zendy

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Study of Mean- and Turbulent-Velocity Fields in a Large-Scale Turbine-Vane Passage

Author(s) -

D. A. Bailey

Publication year - 1980

Publication title -

journal of engineering for power

Language(s) - English

Resource type - Journals

eISSN - 2161-945X

pISSN - 0022-0825

DOI - 10.1115/1.3230239

Subject(s) - inlet , turbulence , boundary layer , mechanics , vortex , turbine , laser doppler velocimetry , physics , boundary layer thickness , mean flow , materials science , engineering , mechanical engineering , thermodynamics , medicine , blood flow

Laser-Doppler velocimetry was used to investigate the secondary flow in the endwall region of a large-scale turbine inlet-guide-vane passage. The mean and turbulent velocities were measured for three different test conditions. The different test conditions consisted of variations in the blade aspect ratio and the inlet boundary-layer thickness or all three cases, a passage vortex was identified and its development documented. The turbulent stresses within the vortex were found to be quite low in comparison with the turbulence in the inlet boundary layer.

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