Whither Turbulence? Turbulence At The Crossroads: Proceedings Of A Workshop Held At Cornell University, Ithaca, Ny, March 22?24, 1989 (lecture Notes In Physics)

An international group of outstanding scientists presents a balanced discussion of various controversies in current turbulence theory. Six topics from the present-day approach to turbulence are each introduced by a survey, followed by three commentaries and a panel discussion. This analysis evaluates future developments of theories presently used for understanding and modelling turbulent flows. Opening remarks....Pages 1-4 Achilles and the tortoise (and the Hare) discuss CFD and turbulent flow....Pages 5-10 The utility and drawbacks of traditional approaches....Pages 13-48 The utility and drawbacks of traditional approaches Comment 1....Pages 49-58 The utility and drawbacks of traditional approaches Comment 2....Pages 59-69 The utility and drawbacks of traditional approaches Comment 3....Pages 70-80 Discussion of “utility and drawbacks of traditional approaches”....Pages 81-93 Future directions in turbulence research and the role of organized motion....Pages 97-131 Whither coherent structures? Comment 1....Pages 132-151 The role of coherent structures — Comment no. 2....Pages 152-155 The role of coherent structures Comment 3....Pages 156-169 Discussion of “The Role of Coherent Structures”....Pages 170-191 Can dynamical systems approach turbulence?....Pages 195-249 Fixed points of turbulent dynamical systems and suppression of nonlinearity Comment 1....Pages 250-257 Chaotic fluid dynamics and turbulent flow Comment 2....Pages 258-268 The utility of dynamical systems approaches Comment 3....Pages 269-291 Discussion on the utility of dynamical systems approach....Pages 292-305 On Moffatt's paradox or can empirical projections approach turbulence?....Pages 306-309 The potential and limitations of direct and large eddy simulations....Pages 313-343 On large eddy simulation using subgrid turbulence models Comment 1....Pages 344-353 The potential and limitations of direct and large-eddy simulations Comment 2....Pages 354-368 The potential and limitations of direct and large-eddy simulations Comment 3....Pages 369-373 Discussion of “the potential and limitations of direct and large Eddy simulations....Pages 374-393 What can we hope for from cellular automata?....Pages 397-404 Prospects for a lattice gas computer....Pages 405-409 Cellular automata and massively parallel physics Comment 2....Pages 410-413 A new strategy for hydrodynamics — lattice gases Comment 3....Pages 414-425 Discussion of “What can we hope for from cellular automata”....Pages 426-435 Phenomenological modelling : Present .... and future?....Pages 439-485 Phenomenological modeling: Present and future Comment 1....Pages 486-489 Turbulence modeling: Present and future Comment 2....Pages 490-512 Simplex discussion regarding “modeling: Present and future” with emphasis upon high speeds Comment 3....Pages 513-516 Discussion on “phenomenological modeling: Present and future”....Pages 517-535