Hostname: page-component-cd9895bd7-gbm5v Total loading time: 0 Render date: 2024-12-28T06:35:14.822Z Has data issue: false hasContentIssue false
  • English
  • Français

The Effect of Disturbed Turbulence Structure on the Preston-Tube Method of Measuring Wall Shear Stress

Published online by Cambridge University Press:  07 June 2016

S. Kiske ,
V. Vasanta Ram  and
K. Pfarr
S. Kiske
Affiliation:
Institut für Thermo- u. Fluiddynamik, Ruhr-Universität Bochum
V. Vasanta Ram
Affiliation:
Institut für Thermo- u. Fluiddynamik, Ruhr-Universität Bochum
K. Pfarr
Affiliation:
Institut für Thermo- u. Fluiddynamik, Ruhr-Universität Bochum
Get access

Summary

The subject of this paper is the effect of a disturbance to the turbulence structure of the flow on the reading of a Preston tube used to measure wall shear stress. Two kinds of disturbance have been studied experimentally, one caused by reattachment and the other by an abrupt change in wall roughness. The apparent wall shear stress measured by the Preston tube both in channel and boundary layer flows with these kinds of disturbance has been compared with the wall shear stress measured by a sublayer fence. The results give an idea of the magnitude of the error that is likely to arise when the Preston tube is used in a flow with disturbed turbulence structure.

Type
Research Article
Information
Aeronautical Quarterly , Volume 32 , Issue 4 , November 1981 , pp. 354 - 367
Copyright
Copyright © Royal Aeronautical Society. 1981

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1 Winter, K.G. An outline of the techniques available for the measurement of skin friction in turbulent boundary layers. Progress in Aerospace Science (Eds. Bagley, Finley), Vol. 18, Pergamon Press pp 1–57, 1977 Google Scholar
2 Patel, V.C. Calibration of Preston tube and limitations on its use in pressure gradients. Journal of Fluid Mechanics, Vol. 23, pp 185–208, 1965 CrossRefGoogle Scholar
3 Bradshaw, P., and Wong, F.Y.F. The reattachment and relaxation of a turbulent shear layer. Journal of Fluid Mechanics, Vol. 52, pp 113–135, 1972 Google Scholar
4 Wauschkuhn, P. and Vasanta Ram, V. Die turbulente Grenzschicht hinter einem Ablösungsgebiet. Zeitschrift fur Flugwissenschaften, Vol. 23, pp 1–9, 1975 Google Scholar
5 Etheridge, D.W. and Kemp, P.H. Measurements of turbulent flow downstream of a rearward-facing step. Journal of Fluid Mechanics, Vol. 86, pp 545–566, 1978 Google Scholar
6 Moss, W.D., and Baker, S. Recirculating flows associated with two-dimensional steps. The Aeronautical Quarterly, Vol. XXXI, August 1980 Google Scholar
7 Moss, W.D., Baker, S. and Bradbury, L.J.S. Measurements of mean velocity and Reynolds stresses in some regions of recirculating flow. 1. Symposium on Turbulent Shear Flows, Pennsylvania State University, pp 13.1–13.7, April 1977 Google Scholar
8 Davies, T.W. and Snell, D.J. Turbulent flow over a two-dimensional step and its dépendance upon upstream conditions. 1. Symposium on Turbulent Shear Flows, Pennsylvania State University, pp 13.29–13.33, April 1977 Google Scholar
9 Eaton, J.K. Johnston, J.P. and Jeans, A.H. Measurements in a reattaching turbulent shear layer. 2. Symposium on Turbulent Shear Flows, Imperial College London, pp 16.7–16.12, July 1979 Google Scholar
10 Townsend, A.A. The structure of turbulent shear flow. 2. Ed. Cambridge University Press, 1977 Google Scholar
11 Rechenberg, I. Messung der turbulenten Wandschubspannung. Zeitschrift fur Flugwissenschaften, Vol. 11, pp 429–438, 1963 Google Scholar
12 Head, M.R., and Vasanta Ram, V. Simplified presentation of Preston-tube calibration. The Aeronautical Quarterly, Vol. XXII, pp 295–300, August 1971 Google Scholar
13 Coles, D.E. The young person’s guide to the data. Proceedings Computation of turbulent boundary layers. AFOSR-IFP Stanford Conference, Vol. II, pp 1–45, 1968 Google Scholar
14 Marumo, E., Suzuki, K. and Sato, T. A turbulent boundary layer disturbed by a cylinder. Journal of Fluid Mechanics, Vol. 87, pp 121–141, 1978 Google Scholar
15 Yajnik, K.S., and Acharya, M. Non-equilibrium effects in a turbulent boundary layer due to the destruction of large eddies. Structure and Mechanics of Turbulence, Vol. II, Proc. of Symposium on Turbulence, TU Berlin, 1977, Springer Verlag, pp 249–260, 1978 Google Scholar
16 Kacker, S.C. Some aspects of fully developed turbulent flow in non-circular ducts. Journal of Fluid Mechanics, Vol. 57, pp 583–602, 1973 CrossRefGoogle Scholar