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Response behaviour of hot wires in shear flow

Published online by Cambridge University Press:  29 March 2006

F. B. Gessner  and
G. L. Moller
F. B. Gessner
Affiliation:
Department of Mechanical Engineering, University of Washington
G. L. Moller
Affiliation:
Department of Mechanical Engineering, University of Washington
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Abstract

The response characteristics of a hot wire operated at constant temperature and exposed to a mean-velocity gradient along its length are examined both analytically and experimentally. The shear sensitivity of local wire temperature distributions, as measured with an infrared microscope, are compared with predicted temperature distributions in order to select a convective heat transfer correlation which can be applied locally along a wire in shear flow. On the basis of this correlation, the steady-state and dynamic response behaviour of platinum and tungsten wires in shear flow are examined by means of computer-generated data. Response curves of general applicability are presented which can be used to correct local mean-velocity and turbulence intensity measurements whenever a mean-velocity gradient exists along a wire.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 47 , Issue 3 , 14 June 1971 , pp. 449 - 468
Copyright
© 1971 Cambridge University Press

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References

Champagne, F. H. 1966 Turbulence measurements with inclined wires. Ph.D. Thesis, University of Washington.
Champagne, F. H., Sleicher, C. A. & Wehrmann, O. H. 1967 Turbulence measurements with inclined hot-wires. Part 1. Heat transfer experiments with inclined hot-wire J. Fluid Mech. 28, 153.Google Scholar
Collis, D. C. & Williams, M. J. 1959 Two-dimensional convection from heated wires at low Reynolds numbers J. Fluid Mech. 6, 357.Google Scholar
Corrsin, S. 1963 Turbulence: Experimental methods. Handbuch der Physik. 1st ed., vol. VIII/2, 525. Berlin: Springer-Verlag.
Davies, P. O. A. L. & Bruun, H. H. 1968 The performance of a yawed hot wire. Proc. of a Symp. on Instr. and Data Proc. for Ind. Aero., 10.1. National Physical Laboratory, Teddington (England).
Davies, P. O. A. L. & Fisher, M. J. 1964 Heat transfer from electrically heated cylinders. Proc. Roy. Soc. A 280, 486.Google Scholar
Friehe, C. A. & Schwarz, W. H. 1968 Deviations from the cosine law for yawed cylindrical anemometer sensors Trans. of ASME, J. Appl. Mech. 35, 655.Google Scholar
Furth, W. F. 1956 Hot-wire response to a parabolic velocity. M.S. Thesis, Johns Hopkins University.
Hinze, J. O. 1959 Turbulence, 1st ed. New York: McGraw-Hill.
KjellstrÖm, B. & Hedberg, S. 1968 Turbulence and shear stress measurements in a circular channel for testing of hot-wire anemometer measurement techniques and evaluation methods. A.B. Atomenergi RTL-1001 (Sweden).
Kramers, H. 1946 Heat transfer from spheres to flowing media Physica, 12, 61.Google Scholar
Mattioli, E. 1956 Una nuova sonda a filo caldo per misure di turbolenza nello strato limite. Atti della Accademia delle Scienze di Torino, I. Classe di Scienze Fisiche, Matematiche e. Naturali, 91, 71.Google Scholar
Moller, G. L. 1969 Measurement of mean-flow velocity in shear flow. M.S. Thesis, University of Washington.
Van Der Hegge Zijnen, B. G. 1956 Modified correlation formulae for the heat transfers by natural and by forced convection from horizontal cylinders. Appl. Sci. Res. A 6, 129.Google Scholar