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On the structure of jets in a crossflow

Published online by Cambridge University Press:  20 April 2006

J. Andreopoulos
J. Andreopoulos
Affiliation:
Gas Dynamics Laboratory, Department of Mechanical and Aerospace Engineering, Princeton University, Princeton, NJ 08544
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Abstract

Spectral analysis and flow visualization are presented for various velocity ratios and Reynolds numbers of a jet issuing perpendicularly from a developing pipe flow into a crossflow. The results are complete with conditional averages of various turbulent quantities for one jet-to-cross-flow velocity ratio R of 0.5. A unique conditional-sampling technique separated the contributions from the turbulent jet flow, the irrotational jet flow, the turbulent crossflow and the irrotational crossflow by using two conditioning functions simultaneously. The intermittency factor profiles indicate that irrotational cross-flow intrudes into the pipe but does not contribute to the average turbulent quantities, while the jet-pipe irrotational flow contributes significantly to them in the region above the exit where the interaction between the boundary-layer eddies and those of the pipe starts to take place. Further downstream, the contributions of the oncoming boundary-layer eddies to the statistical averages reduce significantly. The downstream development depends mainly on the average relative eddy sizes of the interacting turbulent fields.

Type
Research Article
Information
Journal of Fluid Mechanics , Volume 157 , August 1985 , pp. 163 - 197
Copyright
© 1985 Cambridge University Press

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References

Andreopoulos J.1981 Comparison test of various hot wire data analysis methods with respect to their performance at various pitch angles. Rev. Sci. Instrum. 52, 1376.Google Scholar
Andreopoulos J.1982 Measurements in a jet-pipe flow issuing perpendicularly into a cross-stream, Trans. ASME I: J. Fluid Engng 104, 493–499.Google Scholar
Andreopoulos J.1983a Statistical errors associated with probe geometry and turbulence intensity in hot wire anemometry. Physics E: Sci. Instr. 16, 1264–1271.Google Scholar
Andreopoulos J.1983b Heat transfer measurements in a heated jet-pipe flow issuing perpendicularly into a cold stream. Phys. Fluids 26, 3201–3210.Google Scholar
Andreopoulos, J. & Bradshaw P.1980 Measurements of interacting turbulent shear layers in the near wake of a flat plate. J. Fluid Mech. 100, 639–668.Google Scholar
Andreopoulos, J. & Rodi W.1984 An experimental investigation of jets in a crossflow. J. Fluid Mech. 138, 93–127.Google Scholar
Antonia R. A.1981 Conditional sampling in turbulence measurements. Ann. Rev. Fluid Mech. 13, 131.Google Scholar
Antonia R. A., Prabhu, A. & Stephenson S.1975 Conditionally sampled measurements in a heated turbulent jet. J. Fluid Mech. 72, 455.Google Scholar
Bradbury, K. J. S. & Khadem A. H.1975 The distortion of a jet by tabs. J. Fluid Mech. 70, 801–813.Google Scholar
Bradshaw P.1975 Mixing in complex turbulent flows. In Proc. Project Squid Workshop, Purdue University, May 1974, (ed. S. N. R. Murthy). Plenum.
Bradshaw, P. & Murlis J.1974 On the measurement of intermittency in turbulent flows. Imperial College Aero Rep. 74–04.Google Scholar
Chen, C.-H. P. & Blackwelder R. F.1978 Large-scale motion in a boundary layer: a study using temperature contamination. J. Fluid Mech. 89, 1–31.Google Scholar
Chevray, R. & Tutu N. K.1978 Intermittency and preferential transport of heat in a round jet. J. Fluid Mech. 88, 133–160.Google Scholar
Corrsin, S. & Kistler A. L.1955 Free stream boundaries of turbulent flows. NACA Rep. No. 1244.Google Scholar
Crow, S. C. & Champagne X.1971 Orderly structure in jet turbulence. J. Fluid Mech. 48, 547–591.Google Scholar
Dean, R. B. & Bradshaw P.1976 Measurements of interacting shear layers in a duct. J. Fluid Mech. 78, 641–676.Google Scholar
Fabris G.1979 Conditional sampling study of the turbulent wake of a cylinder. J. Fluid Mech. 94, 673–709.Google Scholar
Fiedler, H. & Head M. R.1966 Intermittency measurements in the turbulent boundary layers. J. Fluid Mech. 25, 719.Google Scholar
Foss J. F.1980 Interaction region phenomena for the jet in a cross-flow problem. Rep. SFB 80/E/161, University of Karsruhe.Google Scholar
Goldschmidt, V. M. & Bradshaw P.1973 Flapping of a plane jet. Phys. Fluids 16, 354.Google Scholar
Gutmark, E. & Wygnanski I.1970 The planar turbulent jet. J. Fluid Mech. 73, 465.Google Scholar
Hedley, T. B. & Keffer J. F.1974 Turbulent non-turbulent decisions in an intermittent flow. J. Fluid Mech. 64, 675.Google Scholar
Jenkins, P. E. & Goldschmidt V. W.1976 Conditional temperature and velocities in a heated turbulent plane jet. Phys. Fluids 19, 613.Google Scholar
Kovasznay L. S. G., Kibens, V. & Blackwelder R. F.1970 Large-scale motions in the intermittent region of a turbulent boundary layer. J. Fluid Mech. 41, 283.Google Scholar
Kawall J. G., Shoet, M. & Keffer J. F.1983 A digital technique for the simultaneous measurement of streamwise and lateral velocity in turbulent flows. J. Fluid Mech. 133, 83–112.Google Scholar
Larue J. C., Denton, T. & Gibson C. H.1975 Measurements of high-frequency turbulent temperature. Rev. Sci. Instrum. 46, 757–764.Google Scholar
Larue, J. C. & Libby P. A.1974 Temperature fluctuations in the plane turbulent wake. Phys. Fluids 17, 1956–1967.Google Scholar
Lecordier J. C., Paranthoen, P. & Petit C.1982 The effect of the thermal prong-wire interaction on the response of a cold wire in gaseous flows. J. Fluid Mech. 124, 457–473.Google Scholar
Mcmahon H. M., Hester D. D. & Palfery J. G.1971 Vortex shedding from a turbulent jet into a cross-wind. J. Fluid Mech. 48, 73.Google Scholar
Muck K. C.1980 Comparison of various schemes for the generation of the turbulent intermittency function. Imperial College Aero. Rep. 80–03.Google Scholar
Murlis J., Tsai, H. M. & Bradshaw P.1982 The structure of turbulent boundary layers at low Reynolds numbers. J. Fluid Mech. 122, 13.Google Scholar
Oswald, L. J. & Kibens V.1971 Turbulent flow in the wake of a disc. Tech. Rep. 002820, University of Michigan, Ann Arbor, Michigan.
Paizis, S. T. & Schwarz W. H.1974 Entrainment rates in turbulent flows. J. Fluid Mech. 68, 297.Google Scholar
Perry, A. E. & Lim T. T.1978 Coherent structures in coflowing jets and wakes. J. Fluid Mech. 88, 451–463.Google Scholar
Perry A. E., Smits, A. J. & Chong M. S.1979 The effects of low frequency phenomena on the calibration of hot-wires. J. Fluid Mech. 90, 415.Google Scholar
Perry, A. E. & Tan D. K. M.1984 Simple three-dimensional vortex motions in coflowing jets and wakes. J. Fluid Mech. 141, 197–231.Google Scholar
Ramsey, J. W. & Goldstein R. J.1971 An interaction of a heated jet with a deflecting stream. J. Heat Transfer 94, 365.Google Scholar
Scorer R. S.1958 Natural Aerodynamics, Pergamon.
Sreenivasan K. R., Antonia, R. A. & Stephenson S. E.1978 Conditional measurements in a heated turbulent jet. AIAA J. 16, 863.Google Scholar
Townsend A. A.1949 The fully developed turbulent wake of a circular cylinder. Austral. J. Sci. Res. 2, 549.Google Scholar
Tutu, N. K. & Chevray R.1975 Cross wire anemometry in a high intensity turbulence. J. Fluid Mech. 71, 785.Google Scholar
Yule A. J.1978 Large-scale structure in the mixing region of a round jet. J. Fluid Mech. 89, 413.Google Scholar
Wallace J. M., Eckelmann, H. & Brodkey R. J.1972 The wall region in a turbulent shear flow. J. Fluid Mech. 54, 39.Google Scholar
Weir A. D., Wood, D. H. & Bradshaw P.1981 Interacting turbulent shear layers in a plane jet. J. Fluid Mech. 107, 237.Google Scholar
Willmarth, W. W. & Lu S. S.1972 Structure of Reynolds stress near the wall. J. Fluid Mech. 55, 65.Google Scholar
Wygnanski, I. & Fiedler H. E.1970 The two-dimensional mixing region. J. Fluid Mech. 41, 327.Google Scholar