Obiettivo The main goal of the project is to improve our knowledge of the mechanisms of the onset and development of coherent structures in laminar, transitional, and turbulent shear flows (boundary layer, Poiseuille and Couette flows, jets). Combination of experimental and numerical techniques will be used to address various topics: the nature and dynamical significance of coherent structures in shear flows and the role of vortex reconnection in turbulence cascade.For realization of these goals two things will be developed:(i) an adequate theory of 3-D macroscopic vortices with nonzero torsion of vortex lines as a suitable prototype for coherent structures (description of its self-induced motion, genesis and collapse of double-vortex filaments, interaction of vortex filament with a wall, pairing, merging and tilting of the vortices);(ii) a true picture of a turbulent flow, which will be obtained only with help of advanced measurement technique (visualizations, LDA, PIV, stroboscopic velocity measurements and processing of signals for unsteady flows; hot-wire anemometers) as well as with help of accurate numerical simulation (a set of numerical codes for solution of 2D and 3D problems).One more objective is to study the coherent structure onset and their features in flow on swept wing and to check the crossflow instability theories developed by other investigators. The investigation will be made how secondary, high frequency disturbances developed on the coherent structure result in turbulisation of a boundary layer on a swept wing.The final purpose is to develop new acoustic methods for flow diagnostics and to determine active and passive methods of flow control based both on modification of the coherent structures and suppression of secondary disturbances developed on them.A new level of our knowledge about the turbulence as the important problem of Theoretical Physics may become a prize of the project investigation. Programma(i) IC-INTAS - International Association for the promotion of cooperation with scientists from the independent states of the former Soviet Union (INTAS), 1993- Argomento(i) 1A - Nuclear Physics, Astronomy, Astrophysics OPEN - OPEN Call Invito a presentare proposte Data not available Meccanismo di finanziamento Data not available Coordinatore Norwegian University of Science and Technology Contributo UE Nessun dato Indirizzo Kolbjorn Hejes vei 2 7491 Trondheim Norvegia Mostra sulla mappa Costo totale Nessun dato Partecipanti (5) Classifica in ordine alfabetico Classifica per Contributo UE Espandi tutto Riduci tutto Central Aerohydrodynamics Institute (TsAGI) Russia Contributo UE Nessun dato Indirizzo Radio Street, 17 107005 Moscow Mostra sulla mappa Costo totale Nessun dato Ruhr Universität Bochum Germania Contributo UE Nessun dato Indirizzo Universitätsstr. 150 44780 Bochum Mostra sulla mappa Costo totale Nessun dato Siberian Branch of Russian Academy of Sciences Russia Contributo UE Nessun dato Indirizzo Institutskaya St. 4/1 630090 Novosibirsk Mostra sulla mappa Costo totale Nessun dato Siberian Branch of Russian Academy of Sciences Russia Contributo UE Nessun dato Indirizzo 1 Prospect Lavrentyev 630090 Novosibirsk Mostra sulla mappa Costo totale Nessun dato State University of Novosibirsk Russia Contributo UE Nessun dato Indirizzo Pirogova Street 2 630090 Novosibirsk Mostra sulla mappa Costo totale Nessun dato