On the effect of initial conditions on the two dimensional turbulent mixing layer.

D. Oster; I. Wygnanski; B. Dziomba; H. Fiedler

doi:10.1007/3-540-08765-6_5

On the effect of initial conditions on the two dimensional turbulent mixing layer.

D. Oster, I. Wygnanski, B. Dziomba, H. Fiedler

Research output: Chapter in Book/Report/Conference proceeding › Chapter

35 Scopus citations

Abstract

It was observed that a very small sinusoidal disturbance, which is placed at the initiation of mixing of two parallel streams has a mayor effect on the spreading rate of the mixing layer. The large eddy structure within the layer is very regular in spite of the fact that the flow is fully turbulent and the Reynoldsnumber is of the order of 10SUB6. The spreading rate of the mixing layer is thus directly related to the growth of the large coherent vortices. The distance, in the direction of streaming, over which the spread of the mixing layer can be controlled, depends on the frequency of forcing. Doubling the initial rate of spread of the mixing layer is not only feasible but can be easily attained. (A)

Original language	English (US)
Title of host publication	IN
Subtitle of host publication	STRUCTURE AND MECHANISMS OF TURBULENCE, (PROC. SYMP. ON TURBULENCE, BERLIN, FED. REP. GERMANY, AUG.1-5, 1977)
Publisher	Springer-Verlag
Pages	48-64
Number of pages	17
Volume	1 , H. Fiedler (Ed.), Berlin, Fed. Rep. Germany, Springer-Verlag, 1978
ISBN (Print)	0540087656
DOIs	https://doi.org/10.1007/3-540-08765-6_5
State	Published - 1978
Externally published	Yes

ASJC Scopus subject areas

General Engineering

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10.1007/3-540-08765-6_5

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Oster, D., Wygnanski, I., Dziomba, B., & Fiedler, H. (1978). On the effect of initial conditions on the two dimensional turbulent mixing layer. In IN: STRUCTURE AND MECHANISMS OF TURBULENCE, (PROC. SYMP. ON TURBULENCE, BERLIN, FED. REP. GERMANY, AUG.1-5, 1977) (Vol. 1 , H. Fiedler (Ed.), Berlin, Fed. Rep. Germany, Springer-Verlag, 1978, pp. 48-64). Springer-Verlag. https://doi.org/10.1007/3-540-08765-6_5

On the effect of initial conditions on the two dimensional turbulent mixing layer. / Oster, D.; Wygnanski, I.; Dziomba, B. et al.
IN: STRUCTURE AND MECHANISMS OF TURBULENCE, (PROC. SYMP. ON TURBULENCE, BERLIN, FED. REP. GERMANY, AUG.1-5, 1977). Vol. 1 , H. Fiedler (Ed.), Berlin, Fed. Rep. Germany, Springer-Verlag, 1978 Springer-Verlag, 1978. p. 48-64.

Research output: Chapter in Book/Report/Conference proceeding › Chapter

Oster, D, Wygnanski, I, Dziomba, B & Fiedler, H 1978, On the effect of initial conditions on the two dimensional turbulent mixing layer. in IN: STRUCTURE AND MECHANISMS OF TURBULENCE, (PROC. SYMP. ON TURBULENCE, BERLIN, FED. REP. GERMANY, AUG.1-5, 1977). vol. 1 , H. Fiedler (Ed.), Berlin, Fed. Rep. Germany, Springer-Verlag, 1978, Springer-Verlag, pp. 48-64. https://doi.org/10.1007/3-540-08765-6_5

Oster D, Wygnanski I, Dziomba B, Fiedler H. On the effect of initial conditions on the two dimensional turbulent mixing layer. In IN: STRUCTURE AND MECHANISMS OF TURBULENCE, (PROC. SYMP. ON TURBULENCE, BERLIN, FED. REP. GERMANY, AUG.1-5, 1977). Vol. 1 , H. Fiedler (Ed.), Berlin, Fed. Rep. Germany, Springer-Verlag, 1978. Springer-Verlag. 1978. p. 48-64 doi: 10.1007/3-540-08765-6_5

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AB - It was observed that a very small sinusoidal disturbance, which is placed at the initiation of mixing of two parallel streams has a mayor effect on the spreading rate of the mixing layer. The large eddy structure within the layer is very regular in spite of the fact that the flow is fully turbulent and the Reynoldsnumber is of the order of 10SUB6. The spreading rate of the mixing layer is thus directly related to the growth of the large coherent vortices. The distance, in the direction of streaming, over which the spread of the mixing layer can be controlled, depends on the frequency of forcing. Doubling the initial rate of spread of the mixing layer is not only feasible but can be easily attained. (A)

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On the effect of initial conditions on the two dimensional turbulent mixing layer.

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