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 proceedingChapter

30 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 languageEnglish (US)
Title of host publicationIN
Subtitle of host publicationSTRUCTURE AND MECHANISMS OF TURBULENCE, (PROC. SYMP. ON TURBULENCE, BERLIN, FED. REP. GERMANY, AUG.1-5, 1977)
PublisherSpringer-Verlag
Pages48-64
Number of pages17
Volume1 , H. Fiedler (Ed.), Berlin, Fed. Rep. Germany, Springer-Verlag, 1978
ISBN (Print)0540087656
DOIs
StatePublished - 1978
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)

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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