Title :
Laminar and turbulent shear stress measurement using surface hot-wire and film gauges
Author :
Savory, E. ; Gaudet, L. ; Toy, N.
Author_Institution :
Dept. of Civil Eng., Surrey Univ., Guildford, UK
Abstract :
The work presented is a comparison between the performances of simple miniature hot-wire gauges and commercially available surface hot-films for measuring surface skin friction on wind tunnel models under laminar and turbulent flow conditions. It is shown that the wire gauge is the more sensitive device in terms of response to the flow whilst, at the same time, being the more robust of the two gauges. In addition, the roughness effects due to the 25 μm thick polymer substrate reduce the film gauge sensor response
Keywords :
aerodynamics; boundary layer turbulence; flow measurement; friction; laminar flow; wind tunnels; 25 micron; aerodynamic boundary layer flows; hot-wire gauges; laminar flow conditions; laminar shear stress measurement; roughness effects; sensor response; surface hot-film gauges; surface skin friction; turbulent flow conditions; turbulent shear stress measurement; wind tunnel models; Fluid flow measurement; Friction; Performance evaluation; Polymer films; Robustness; Rough surfaces; Skin; Stress measurement; Surface roughness; Wire;
Conference_Titel :
Instrumentation in Aerospace Simulation Facilities, 1995. ICIASF '95 Record., International Congress on
Conference_Location :
Wright-Patterson AFB, OH
Print_ISBN :
0-7803-2088-3
DOI :
10.1109/ICIASF.1995.519111
