Gravitationally defined velocities for a low speed hot-wire calibrationA technique to provide the reference velocity for a low speed hot-wire calibration is described. A pivoted arm falls under the action of gravity and the resulting velocity field can be used to define the transfer function coefficients in a modified Collis and Williams (1959) relationship. In nominal agreement with a published result, a deviation from this relationship for a film Reynolds number such that Re exp n of less than about 0.24 is observed.
Document ID
19880026943
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Haw, R. C. (Michigan State Univ. East Lansing, MI, United States)
Ali, S. K. (Michigan State Univ. East Lansing, MI, United States)
Foss, J. F. (Michigan State University East Lansing, United States)