Experimental and numerical investigations of the off-design flow physics in a supersonic through-flow fan cascade

The turbulent character of the supersonic wake of a linear cascade of fan airfoils has been studied experimentally using a two-component Laser Doppler Anemometer. The cascade was tested in the Virginia Polytechnic Institute and State University intermittent wind tunnel facility, where the experimental Mach and Reynolds numbers were 2.36 and 4.8 x 10⁶, respectively. In addition to mean flow measurements, Reynolds normal and shear stresses were measured as functions of cascade incidence angle and streamwise location in the near-wake and the far-wake. The extremities of profiles of both the mean and turbulent wake properties were found to be strongly influenced. by upstream shock-boundary-layer-interactions, the strength of which varied with cascade incidence. In contrast, the peak levels of turbulence properties within the shear layer were found to be largely independent of cascade incidence, and could be characterized in terms of the streamwise position only. This fact permitted the determination of the decay of the Reynolds shear stress, the production rate of turbulent kinetic energy, and the turbulent kinetic energy itself with streamwise location.

Name thesis:degree_name

Ph. D.

Level thesis:degree_level

doctoral

Discipline thesis:degree_discipline

Mechanical Engineering

Department dc:contributor.department

Mechanical Engineering

Grantor dc:publisher

Virginia Tech

Year dc:date.issued

1992

Author dc:creator

• Andrew, Philip L.

Chair dc:contributor.committeechair

• Ng, Fai

Committee members dc:contributor.committeemember

• Dancey, Clinton L.
• Moses, Hal L.
• Moore, John
• Simpson, Roger L.

• turbulence properties
• wake properties

Statement dc:rights

• In Copyright

Licence dc:rights.uri

• http://rightsstatements.org/vocab/InC/1.0/

Language dc:language.iso

en

Dc Identifier Other

etd-07282008-134047

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/38841