DOI: 10.1017/s0022112058000112. The behaviour of a Pitot tube in transverse shear

The behaviour of a Pitot tube in transverse shear

10.1017/s0022112058000112

Crossref journal-article

Cambridge University Press (CUP)

Journal of Fluid Mechanics (56)

Abstract

This paper presents an experimental investigation of the displacement of the total-head profile in a shear flow from its true position when it is measured with a flat-ended round Pitot tube. The experiments showed that at least two forms of displacement may exist depending on the flow conditions. In a wake the displacement of the effective centre of pressure towards the higher velocity was found to obey the law deduced theoretically by Hall (1956), provided that changes in flow direction were not large. In the presence of large eddies the behaviour of the Pitot is further modified by its characteristics in yaw. This introuduces a total-head error reducing the observed total head. In a turbulent boundary layer the experiments showed that the displacements were an order of magnitude smaller than in a wake and could be regarded as negligible for a round Pitot, even when it was touching the wall. An empirical method for correcting the observations made with a round Pitot which is of the same width as the wake is given in an appendix.

Bibliography

Davies, P. O. A. L. (1958). The behaviour of a Pitot tube in transverse shear. Journal of Fluid Mechanics, 3(5), 441â456.

Authors 1

P. O. A. L. Davies (first)

References 10 Referenced 19

Lighthill, M. J. 1957 J. Fluid Mech. 2,493. (10.1017/S0022112057000294)
Schlichting, H. 1930 Ingen.-Arch. 1,533. (10.1007/BF02079870)
Preston, J. H. 1954 J. R. Aero. Soc. 58,109. (10.1017/S0368393100097704)
Hall, I. M. 1956 J. Fluid Mech. 1,142. (10.1017/S002211205600010X)
Young, A. D. & Maas, J. N. 1936 Aero. Res. Counc., Lond., Rep. & Mem. no. 1770.
Macmillan, F. A. 1957 Aero. Res. Counc., Lond., Rep. & Mem. no. 3028.
Mawson, G. B. & Lilley, G. M. 1956 College of Aeronautics, Cranfield, Rep. no. 107.
Goldstein, S. (Ed.)1938 Modern Developments in Fluid Dynamics , Vol. 2.Oxford University Press.
Livesey, J. L. 1956 J. Aero. Sci. 23,949. (10.2514/8.3695)
Todd, K. W. 1949 Proc. Instn Mech. Engrs, Lond. 161,213.

Dates

Type	When
Created	19 years, 5 months ago (March 28, 2006, 4:44 a.m.)
Deposited	2 months, 1 week ago (June 20, 2025, 6:11 p.m.)
Indexed	2 months, 1 week ago (June 20, 2025, 6:40 p.m.)
Issued	67 years, 7 months ago (Feb. 1, 1958)
Published	67 years, 7 months ago (Feb. 1, 1958)
Published Online	19 years, 5 months ago (March 28, 2006)
Published Print	67 years, 7 months ago (Feb. 1, 1958)

Funders 0

None

BibTeX

@article{Davies_1958, title={The behaviour of a Pitot tube in transverse shear}, volume={3}, ISSN={1469-7645}, url={http://dx.doi.org/10.1017/s0022112058000112}, DOI={10.1017/s0022112058000112}, number={5}, journal={Journal of Fluid Mechanics}, publisher={Cambridge University Press (CUP)}, author={Davies, P. O. A. L.}, year={1958}, month=feb, pages={441–456} }

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