DOI: 10.1017/s0022112066000077. Results of an attempt to generate a homogeneous turbulent shear flow

Results of an attempt to generate a homogeneous turbulent shear flow

10.1017/s0022112066000077

Crossref journal-article

Cambridge University Press (CUP)

Journal of Fluid Mechanics (56)

Abstract

An approximately homogeneous turbulent shear flow is generated in an open-return wind tunnel test-section by a plane parallel-rod grid of uniform rod diameter and non-uniform rod spacing. The grid design is based upon an analysis by Owen & Zienkiewicz (1957). Hot-wire measurements taken in this flow include mean velocities, component turbulence intensities, shear and two-point space correlations, and energy spectra. In addition, microscales, obtained both from instantaneous time derivatives of the hot-wire signal and from two-point space correlations, and integral scales, calculated both from correlations and energy spectra, are reported.Based upon these results, it is concluded that, far enough away from the grid and the test-section wall boundary layers:The turbulence intensities are maintained at uniform values by the nearly constant mean shear.The turbulent shear stress approaches an asymptotic value.Measured two-point space correlation coefficients and one-dimensional energy spectra attain self-preserving forms.When distance downstream of the grid is measured in terms of the number of ‘local’ grid rod spacings, (see discussion of microscales obtained from time derivatives), the Taylor microscale defined by the correlation coefficientRuu(rX, 0, 0) grows linearly with this ‘effective’ distance over most of the region measured.The limited number of integral scale determinations and experimental uncertainty allow only the statements that the magnitude of the longitudinal scale is roughly one-eighth the lateral dimension of the square test-section and tends to increase slightly with ‘effective’ distance from the grid.The lateral integral scales are approximately one-half the longitudinal scales and also increases with distance from the grid.The integral scale which characterizes the size of the eddy primarily responsible for momentum transfer is roughly one-tenth the test-section lateral dimension (measured at one point only).

Bibliography

Rose, W. G. (1966). Results of an attempt to generate a homogeneous turbulent shear flow. Journal of Fluid Mechanics, 25(1), 97â120.

Authors 1

W. G. Rose (first)

References 36 Referenced 124

Lumley, J. L. 1965 Phys. Fluids,8,1056. (10.1063/1.1761355)
Hubbard, P. G. 1957 State Univ. of Iowa Studies in Engr. Bull. 37,1.
Kolpin, M. A. 1964 J. Fluid Mech. 18,52. (10.1017/S0022112064000398)
Grant, H. L. 1958 J. Fluid Mech. 4,14. (10.1017/S0022112058000379)
Dryden, H. L. , Schubauer, G. B. , Mock, W. C. & Skramstad, H. K. 1937 NACA Rep. no. 581.
Comte-Bellot, G. & Corrsin, S. 1965 The use of a contraction to improve the isotropy of grid-generated turbulence. Manuscript submitted for publication. (10.1017/S0022112066000338)
Lin, C. C. 1953 Quart. Appl. Math. 10,29. (10.1090/qam/51649)
Craya, A. 1958 Publ. Scien. et Tech. du Ministere de l'Air, no. 345,1.
Corrsin, S. 1963 Handbuch der Physik,8/2,524. (10.1007/978-3-662-10109-4_4)
Batchelor, G. K. & Proudman, I. 1956 Phil. Trans., A248,369. (10.1098/rsta.1956.0002)
Taylor, G. I. & Batchelor, G. K. 1949 Quart. J. Mech. Appl. Math. 2,1. (10.1093/qjmam/2.1.1)
Taylor, G. I. 1915 Phil. Trans., A215,1.
Owen, D. R. & Zienkiewicz, H. K. 1957 J. Fluid Mech. 2,52. (10.1017/S0022112057000336)
Uberoi, M. S. & Kovasznay, L. S. G. 1953 Quart. Appl. Math. 10,37. (10.1090/qam/51466)
Von Kármán, Th. 1937 J. Aero. Sci. 4, no. 4,131.
Boussinesq, J. 1877 Mem. prés. par div. sav., Paris,23,46.
Townsend, A. A. 1956 The Structure of Turbulent Shear Flow .Cambridge University Press.
Deissler, R. G. 1961 Phys. Fluids,10,1187. (10.1063/1.1706194)
Townsend, A. A. 1954 Quart. J. Mech. Appl. Math. 7,10. (10.1093/qjmam/7.1.104)
Laufer, J. 1951 NACA Rep. no. 1053,15.
Gibson, M. M. 1963 J. Fluid Mech. 15,16. (10.1017/S002211206300015X)
Pasceri, R. E. & Friedlander, S. K. 1960 Can. J. Chem. Engr. no. 212. (10.1002/cjce.5450380607)
Hinze, J. O. 1959 Turbulence .New York:McGraw-Hill.
Rose, W. G. 1962 J. Appl. Mech. 29,61. (10.1115/1.3636498)
Fox, J. 1964 Phys. Fluids,7,562. (10.1063/1.1711239)
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Collis, D. C. 1952 Aero. Quart. 4,9.
Corrsin, S. 1957 Naval Hydrodynamics Pub. 515, Nat. Acad. Sci./Nat. Res. Council, U.S. Gov't P.O., no. 373. Washington, D.C.
Prandtl, L. 1925 Z. angew. Math Mech. 5,13. (10.1002/zamm.19250050212)
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Burgers, J. M. & Mitchner, M. 1953 Proc. K. Akad. Wet. Amst., B56,228,343.
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Comte-Bellot, G. 1965 Publ. Scien. et Tech. du Ministere de l'Air, no. 419,1.
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Mccarthy, J. H. 1964 J. Fluid Mech. 19,49. (10.1017/S0022112064000866)
Traugott, S. C. 1958 NACA TN, no. 4125,1.

Dates

Type	When
Created	19 years, 4 months ago (March 28, 2006, 7:36 a.m.)
Deposited	5 years, 4 months ago (April 13, 2020, 7:33 a.m.)
Indexed	1 month, 1 week ago (July 8, 2025, 4:02 p.m.)
Issued	59 years, 3 months ago (May 1, 1966)
Published	59 years, 3 months ago (May 1, 1966)
Published Online	19 years, 4 months ago (March 28, 2006)
Published Print	59 years, 3 months ago (May 1, 1966)

Funders 0

None

BibTeX

@article{Rose_1966, title={Results of an attempt to generate a homogeneous turbulent shear flow}, volume={25}, ISSN={1469-7645}, url={http://dx.doi.org/10.1017/s0022112066000077}, DOI={10.1017/s0022112066000077}, number={1}, journal={Journal of Fluid Mechanics}, publisher={Cambridge University Press (CUP)}, author={Rose, W. G.}, year={1966}, month=may, pages={97–120} }

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