Laminar-Turbulent Transition: Symposium, Novosibirsk, USSR by A. D. D. Craik (auth.), Dr. V. V. Kozlov (eds.)

By A. D. D. Craik (auth.), Dr. V. V. Kozlov (eds.)

At the advice of the USSR nationwide Committee of Theo­ retical and utilized Mechanios the overseas Union of Theo­ retical and utilized Meohanics made a deoision to arrange the second one IUTAM Symposium on Laminar-Turbulent Transition in No­ vosibirsk. Professor Yanenko used to be entrusted to be the chairman of the medical committee. It used to be proposed that approximately a hundred scientists could perform the Symposium and that 60 lectures and invited lectures will be added; as for the subject matter of the Symposium, it used to be dedicated to experimental and theoretical stu­ dies of laminar-turbulent transition in fluids and gases, i.e. the actual difficulties of transition and mathematical modeling in shear flows. It was once deliberate to put a distinct emphasis on basic mechanisms of the transition technique. The scienti­ fio committee authorized of the scope of the Symposium having thought of the adjustments within the instructions of the experiences which came about because the First Symposium. for instance, there has been singled out the matter of transformation of exterior distur­ bances into eigenoscillations of shear flows, i.e. the recep­ tivity challenge which was once merely a little touched upon on the First Symposium. a brand new part seemed dedicated to the inter­ relation of the circulate separation phenomenon and its balance. It used to be deliberate to concentration the eye at the secondary instability at transition to turbulence on the non-linear degree of the move breakdown in addition to at the lack of balance and the disturbances improvement in three-D flows.

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Extra info for Laminar-Turbulent Transition: Symposium, Novosibirsk, USSR July 9–13, 1984

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LAURIEN OFVLR, Institute for Theoretical Fluid Mechanics Bunsenstrasse 10, 0-3400 Gottingen, FRG Abstract The laminar-turbulent transition process in plane Poiseuille flow is simulated by numerical integration of the three-dimensional time-dependent Navier-Stokes equations using a spectral method. The classical peak-valley spli tting mode of secondary instability is considered. Detailed comparison with experiments has demonstrated very satisfactory agreement up to the 1-spike stage. Visualizations of the development of three-dimensional flow structures are presented including timelines of fluid markers.

Zhid. ] Nonlinear development of a wave in a boundary layer (Engl. ) 21. S. : 1983 J. Fluid Mech. 138, 209-247. The resonant interaction of disturbances at laminar-turbulent transition in a boundary layer. 22. S. : 1984 Proc. IUTAM Symp. 'Turbulence and Chaotic Phenomena in Fluids', Kyoto 1983. Experiments on the subharmonic route to turbulence in boundary layers. 23. : 1976 Dokl. Akad. Nauk. R. 228, 1314-1316 [Soviet Phys. Dokl. 21, 322-323]. Exact solutions to the problem of the parametric interaction of three-dimensional wave packets.

653 Schrauf G. Krause E. Symmetric and asymmetric Taylor vortices in a spherical gap . . . . . . N. A. A. M. Some routes to turbulence in spherical Couette flow .................. 669 BUhler K. Zierep J. New secondary instabilities for high Re-number flow between two rotatinq spheres . . . . . . . . . • . . . . . 677 Stability of unsteady parallel flows by the method of energy . . . . . . 687 On a multiqrid method for the numerical solution of Navier-Stokes equations .

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