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Effects of a downstream disturbance on the structure of a turbulent plane mixing layer

Koochesfahani, M. M. and Dimotakis, P. E. (1989) Effects of a downstream disturbance on the structure of a turbulent plane mixing layer. AIAA Journal, 27 (2). pp. 161-166. ISSN 0001-1452.

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Using a two-dimensional airfoil, a disturbance was introduced into a plane mixing layer some distance downstream of the splitter plate trailing edge. Results indicate that it is possible to induce very large changes in the layer growth rate downstream of the disturbance location, while leaving the portion of the shear layer between the splitter plate and the disturbance source essentially unaffected. Furthermore, the use of forcing for modification of the mixing layer in the region upstream of the disturbance is demonstrated. It Is shown that two different mechanisms are responsible for coupling such disturbances to the flow in the present forcing of upstream and downstream regions.

Item Type:Article
Additional Information:©1988 American Institute of Aeronautics and Astronautics. Presented as Paper 87-0197 at the AIAA 25th Aerospace Sciences Meeting, Reno, NV, Jan. 12-15, 1987; received Sept. 3, 1987; revision received April 13, 1988. We thank our colleagues in the Aeronautics Department at Caltech for the many useful discussions and ideas. This work was initially supported under the Caltech President's Fund Grant PF-126, in collaboration with Dr. Donald Collins of the Caltech Jet Propulsion Laboratory. Subsequent support continued under the sponsorship of the Air Force Office of Scientific Research Grant AFOSR-84-0120.
Funding AgencyGrant Number
Caltech President's FundPF-126
Air Force Office of Scientific Research (AFOSR)AFOSR-84-0120
Issue or Number:2
Record Number:CaltechAUTHORS:20141028-160303422
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Official Citation:M. KOOCHESFAHANI and P. E. DIMOTAKIS. "Effects of a downstream disturbance on the structure of a turbulent plane mixing layer", AIAA Journal, Vol. 27, No. 2 (1989), pp. 161-166. doi: 10.2514/3.10078
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:50964
Deposited On:28 Oct 2014 23:16
Last Modified:03 Oct 2019 07:28

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