The Influence of Polymer Additives on Velocity and by John L. Lumley, Isoroku Kubo (auth.), Prof. Dr.-Ing.

By John L. Lumley, Isoroku Kubo (auth.), Prof. Dr.-Ing. Bernhard Gampert (eds.)

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Extra info for The Influence of Polymer Additives on Velocity and Temperature Fields: Symposium Universität — GH — Essen, Germany, June 26–28, 1984

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8, 271-310 (1981). 17. : Prog. , 5, 195-209 (1972). 18. : J. , 63, 635 (1974). 19. : J. , 83, 1, 119-127 (1977). 20. : J. , 97, 671 (1980). 655- 21. : J. , 30, 741-773 (1967). 22. : Journ. N. Newt. , 8, 119-138 (1981) . 23. : Rheol. Acta, 21, 288-310 (1982). 24. : Rheologica Acta, 181 (1970). 9, 174- 28 25. : Rheol. Acta, 13, 830-835 (1974). 26. Newt. , 1, 93-104 (1976). 27. : Journal N. Newt. , 7, 315-331 (1980). 28. : Journal N. , 11, 341347 (1982). 29. : Journ. Appl. , 47, 4255-4260 (1976).

Introduction The possibility of reducing the turbulent skin-friction drag of military and commercial vehicles has always been exciting. For surface vessels operating near the hull design speed. for aircraft operating at transonic (or higher) perhaps their not drag so is interesting. wave drag; since even so. a speeds, substantial there has fraction been or it is of interest among competitive sailors eager to reduce the net drag a percentage point or two. The possibility becomes quite interest- *IUTAM Symposium, Essen 1984: Influence of Polymer Additives on Velocity and Temperature Fields, ed.

G. & Reischman, M. : Flow visualization of the near-wall region of a drag-reducing channel flow, J. Fluid Mech. 56 (1972) 559. 19. Perry, turbulence. A. E. & Chong, M. : On the mechanism of wall J. Fluid Mech. 119 (1982) 243-256. 20. : The form and dynamics of Langmuir circulations. Ann. Rev. Fluid Mech. 15 (1983) 391-427. P. JAMES Department of Mechanical Engineering University of Toronto Toronto, Ontario, M5S lA4, CANADA When minute amounts of polymer cause significant changes in a flow, the key fluid property thought to be associated with the effect is extensional viscosity.

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