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Published August 1, 1981 | public
Journal Article

Prospects for useful research on coherent structure in turbulent shear flow

Coles, Donald

Abstract

Six different flows involving coherent structures are discussed with varying amounts of detail. These are the puff in a pipe, the turbulent spot, the spiral turbulence, the vortex ring, the vortex street, and the mixing layer. One central theme is that non-steady similarity arguments and topology are of the essence of coherent structure. Another is that the Reynolds equations, which are sterile when applied to a structureless mean flow, may be quite productive when applied to a single structure. A third theme is the prospect for at least partial control of technically important flows by exploiting the concept of coherent structure.

Additional Information

© 1981 Indian Academy of Sciences. MS received 9 December 1980. Preparation of this paper was supported in part by the National Science Foundation under grant CME-7723541.

Additional details

Created:
August 22, 2023
Modified:
October 23, 2023