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Fully developed periodic turbulent pipe flow. Part 1. Main experimental results and comparison with predictions

Published online by Cambridge University Press:  20 April 2006

S. W. Tu
Affiliation:
Bechtel Civil and Mineral Inc., San Francisco, California
B. R. Ramaprian
Affiliation:
Iowa Institute of Hydraulic Research, The University of Iowa

Abstract

The present paper is the first part of a two-part report on a detailed investigation of periodic turbulent pipe flow. In this investigation, experimental data on instantaneous velocity and wall shear stress were obtained at a mean Reynolds number of 50000 in a fully developed turbulent pipe flow in which the volumetric flow rate was varied sinusoidally with time around the mean. Two oscillation frequencies at significant levels of flow modulation were studied in detail. The higher of these frequencies was of the order of the turbulent bursting frequency in the flow, and the other can be regarded as an intermediate frequency at which the flow still departed significantly from quasi-steady behaviour. While a few similar experiments have been reported in the recent literature, the present study stands out from the others in respect of the flow regimes investigated, the magnitude of flow modulation, the detailed nature of the measurements and most importantly the identification of a relevant parameter to characterize unsteady shear flows. The present paper contains the main experimental results and comparisons of these results with the results of a numerical calculation procedure which employs a well-known quasi-steady turbulence closure model. The experimental data are used to study the manner in which the time-mean, the ensemble-averaged and the random flow properties are influenced by flow oscillation at moderate to high frequencies. In addition, the data are also used to bring out the capability and limitations of quasi-steady turbulence modelling in the prediction of unsteady shear flows. A further and more detailed analysis of the experimental data, results of some additional experiments and a discussion on the characterization of turbulent shear flows are provided in Part 2 (Ramaprian & Tu 1983).

Type
Research Article
Copyright
© 1983 Cambridge University Press

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References

Acharya, M. & Reynolds, W. C. 1975 Measurements and predictions of a fully developed turbulent channel flow with imposed controlled oscillations. Stanford Univ. Thermosci. Div. Tech. Rep. TF-8.Google Scholar
Binder, B. & Kueny, J. L. 1981 Measurements of the periodic velocity oscillations near the wall in unsteady turbulent channel flow. In Unsteady Turbulent Shear Flows (ed. R. Michel, J. Cousteix & R. Houdeville), pp. 100108. Springer.
Cousteix, J., Houdeville, R. & Javelle, J. 1981 Response of a turbulent boundary layer to a pulsation of the external flow with and without adverse pressure gradient. In Unsteady Turbulent Shear Flows (ed. R. Michel, J. Cousteix & R. Houdeville), pp. 120144. Springer.
Kirmse, R. E. 1979 Investigations of pulsating turbulent pipe flow. ASME Paper 79-WA/FE-1.Google Scholar
Kita, Y., Adachi, Y. & Hirose, K. 1980 Periodically oscillating turbulent flow in a pipe Bull. JSME 23, 656664.Google Scholar
Laufer, J. 1954 The structure of turbulence in fully developed pipe flow. NACA Rep. 1174, pp. 407434.Google Scholar
Mizushina, T., Maruyama, T. & Hirasawa, H. 1975 Structure of the turbulence in pulsating pipe flows J. Chem. Engng Japan 8, 210216.Google Scholar
Mizushina, T., Maruyama, T. & Shiozaki, Y. 1973 Pulsating turbulent flow in a tube J. Chem. Engng Japan 6, 487494.Google Scholar
Ohmi, M., Usui, T., Tanaka, O. & Toyama, M. 1976 Pressure and velocity distribution in pulsating turbulent pipe flow Bull. JSME 19, 951957.Google Scholar
Ohmi, M., Kyomen, S. & Usui, T. 1978 Analysis of velocity distribution in pulsating turbulent pipe flow with time-dependent friction velocity Bull. JSME 21, 11371143.Google Scholar
Patankar, S. V. 1967 Heat and mass transfer in turbulent boundary layers. Ph.D. thesis, Imperial College of Science and Technology, Mech. Engng Dept.
Ramaprian, B. R. & Tu, S. W. 1980 An experimental study of oscillatory pipe flow at transitional Reynolds numbers J. Fluid Mech. 100, 513544.Google Scholar
Ramaprian, B. R. & Tu, S. W. 1982 Study of periodic turbulent pipe flow. IIHR Rep. 238, Iowa Inst. Hydraul. Res.Google Scholar
Ramaprian, B. R. & Tu, S. W. 1983 Fully developed periodic turbulent pipe flow. Part 2. The detailed structure of the flow J. Fluid Mech. 137, 5981.Google Scholar
Rao, K. N., Narasimha, R. & Badri Narayanan, M. A. 1971 The ‘bursting’ phenomena in a turbulent boundary layer. J. Fluid Mech. 48, 339810.Google Scholar
Vasiliev, O. F. & Kvon, V. I. 1971 Friction forces of unsteady flows in open channels and pipes. In Proc. 14th Congress of IAHR, Paris, vol. 2, pp. B 23.1810.10.