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Self-Aligning Hot-Wire Probe

Published online by Cambridge University Press:  04 July 2016

A. D. Bond  and
A. M. Porter
A. D. Bond
Affiliation:
Queen's University, Belfast
A. M. Porter
Affiliation:
Queen's University, Belfast
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Summary:—

This note describes how a single constant temperature hot wire may be used for measurements of direction, velocity and turbulence in a two-dimensional flow. The wire probe is rotated by a servo motor which automatically sets the wire with its axis either in the stream direction or normal to the flow. The accuracy of setting the wire in the direction of the stream is about , and across the stream is about 1°. If the higher accuracy is demanded the velocity and turbulence measurements require a second setting of the probe, at 90° to the previous one. When less precision is acceptable, the angle, velocity and turbulence measurements may be taken at the single setting, normal to the stream.

Type
Technical Notes
Information
The Aeronautical Journal , Volume 71 , Issue 681 , September 1967 , pp. 657 - 658
Copyright
Copyright © Royal Aeronautical Society 1967

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References

1.Bailey, A. A Directional Hot-Wire Anemometer. R and M No 777, 1922.Google Scholar
2.Simmons, L. F. G. and Bailey, A. Note on a Hot-Wire Speed and Direction Meter. R and M 1019, 1926.Google Scholar
3.Davies, P. O. A. L. and Fisher, M. J.Heat Transfer from Electrically Heated Cylinders. Proc Roy Soc A, Vol 280, 1964.Google Scholar
4.Douce, J. L. and Bond, A. D.The Development and Performance of a Self Optimizing System. Proc IEE,Vol 110, 3rd March 1963.Google Scholar