The laser interferometer skin-friction meter: a numerical and experimental study

Limits to the applicability of thin-film lubrication theory are established. The following two problems are considered: (1) the response of the oil film to a time-varying skin friction such as is encountered in turbulent boundary layers, and (2) a 'surface-wave instability' encountered at...

Full description

Saved in:
Bibliographic Details
Published inJournal of physics. E, Scientific instruments Vol. 19; no. 9; pp. 744 - 751
Main Authors Murphy, J D, Westphal, R V
Format Journal Article
LanguageEnglish
Published Legacy CDMS IOP Publishing 01.09.1986
Institute of Physics
American Institute of Physics
Subjects
Exact sciences and technology
Fluid dynamics
Fundamental areas of phenomenology (including applications)
Instrumentation And Photography
Instrumentation for fluid dynamics
Physics
Measuring instrument
Laser interferometer
Skin friction
Aerodynamics
Numerical calculation
Experimental study
Interferometry
Online AccessGet full text

Cover

More Information
Summary:Limits to the applicability of thin-film lubrication theory are established. The following two problems are considered: (1) the response of the oil film to a time-varying skin friction such as is encountered in turbulent boundary layers, and (2) a 'surface-wave instability' encountered at high skin-friction levels. Results corresponding to the first problem reveal that the laser interferometer skin-friction meter may, in principle, be applied to the measurement of instantaneous skin friction. In addressing the second problem, it is shown that the observed surface waves are not the result of a hydrodynamic instability.
Bibliography:CDMS
Legacy CDMS
ISSN:0022-3735
DOI:10.1088/0022-3735/19/9/020