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The correction of hot-wire readings for proximity to a solid boundary

Published online by Cambridge University Press:  28 March 2006

J. A. B. Wills
J. A. B. Wills
Affiliation:
Engineering Laboratory, Cambridge
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Abstract

When using a hot wire for velocity measurements close to a solid boundary, errors may be introduced if the effect of the boundary on the rate of heat loss from the wire is ignored. An experimental determination of the effect is described, in which a hot wire was mounted at various distances from a metal surface forming one wall of a two-dimensional channel. The rate of heat loss was determined electrically, and the air velocity at the wire found from the known laminar velocity profile. The application of the results to turbulent flows is discussed briefly.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 12 , Issue 3 , March 1962 , pp. 388 - 396
Copyright
© 1962 Cambridge University Press

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References

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