Near-wall velocity measurements in two-dimensional turbulent boundary layers

Significant differences involving near-wall velocity profiles in two-dimensional turbulent boundary layers when such data was plotted on law of the wall coordinates were reported by D. Coles in the Stanford Conference. These discrepancies can be especially important when near-wall velocity data is used to infer the local wall shear stress from law of the wall similarity laws. With emphasis on the near-wall measurements, this study systematically investigated the effects of the following parameters on the velocity profile: probe type (straight-stem claw probe, gooseneck probe, and hot-wire probe), probe tip diameter, streamwise pressure gradient, and boundary layer tripping. In addition, the local wall shear stress was inferred from the near-wall data, and the effects from the previously mentioned parameters and the choice of both the law of the wall constants and formulas on the inferred wall shear stress were examined.

Name thesis:degree_name

M. S.

Level thesis:degree_level

masters

Discipline thesis:degree_discipline

Mechanical Engineering

Department dc:contributor.department

Mechanical Engineering

Grantor dc:publisher

Virginia Polytechnic Institute and State University

Year dc:date.issued

1974

Author dc:creator

• Gold, Dirk Sherman

Statement dc:rights

• In Copyright

Licence dc:rights.uri

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

Language dc:language.iso

en

Handle dc:identifier.uri

http://hdl.handle.net/10919/114714

OAI identifier oai:identifier

oai:vtechworks.lib.vt.edu:10919/114714