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TMB-2007 Book of Abstracts Turbulent Mixing and Beyond International Conference ABSTRACTS August 18-26, 2007 The Abdus Salam International Centre for Theoretical Physics Strada Costiera 11, 34014 Trieste, Italy Tel: +39-040-2240-251 (226), Fax: (+39) 040 2240 410 Email: [email protected] http://www.ictp.it/~tmbw07 Book of Abstracts of the International Conference “Turbulent Mixing and Beyond,” August 18–26, 2007, The Abdus Salam International Centre for Theoretical Physics, Trieste, Italy Copyright © 2007 The Abdus Salam International Center for Theoretical Physics ISBN 92-95003-36-5 2 Organizing Committee • Snezhana I. Abarzhi (chairperson, USA) • Malcolm J. Andrews (Los Alamos National Laboratory, USA) • Sergei I. Anisimov (Landau Institute for Theoretical Physics, Russia) • Serge Gauthier (Commissariat à l'Energie Atomique, France) • Donald Q. Lamb (The University of Chicago, USA) • Katsunobu Nishihara (Institute for Laser Engineering, Osaka, Japan) • Bruce A. Remington (Lawrence Livermore National Laboratory, USA) • Robert Rosner (Argonne National Laboratory, USA) • Katepalli R. Sreenivasan (International Centre for Theoretical Physics, Italy) • Alexander L. Velikovich (Naval Research Laboratory, USA) Sponsors • National Science Foundation (NSF), USA Divisions and Programs Directors: Drs. A.G. Detwiler, L.M. Jameson, E.L. Lomon, P.E. Phelan, G.A. Prentice, J.A. Raper, W. Schultz, P.R. Westmoreland PI: Dr. S.I. Abarzhi • Air Force Office of Scientific Research (AFOSR), USA Program Director: Dr. J.D. Schmisseur; PI: Dr. S.I. Abarzhi • European Office of Aerospace Research and Development (EOARD), Air Force Office of Scientific Research, United States Air Force Research Laboratory Program Chief: Dr. S. Surampudi; PI: Dr. S.I. Abarzhi • International Centre for Theoretical Physics (ICTP), Trieste, Italy Centre's Director: Dr. K.R. Sreenivasan • The University of Chicago and Argonne National Laboratory (ANL), USA Laboratory's Director: Dr. R. Rosner • Commissariat à l'Energie Atomique (CEA), France Directeur de Recherche: Dr. S. Gauthier • Los Alamos National Laboratory (LANL), USA Group Leader: Dr. M. Andrews; PI: Dr. S.I. Abarzhi • The DOE ASC Alliance Center for Astrophysical Thermonuclear Flashes, The University of Chicago, USA Center's Director: Dr. D.Q. Lamb • Institute for Laser Engineering (ILE), Osaka, Japan Division Head: Dr. K. Nishihara • Illinois Institute of Technology (IIT), Chicago, USA College of Engineering: Drs. H. Arastoopour (Dean) and H. Nagib 3 Scientific Advisory Committee • S.I. Abarzhi (Chicago, USA) • G. Ahlers (University of California at Santa Barbara, USA) • M.J. Andrews (Los Alamos National Laboratory, USA) • S.I. Anisimov (Landau Institute for Theoretical Physics, Russia) • E. Bodenschatz (Max Plank Institute, Gottingen, Germany) • S. Dalziel (DAMTP, University of Cambridge, UK) • R. Ecke (Los Alamos National Laboratory, USA) • H.J. Fernando (Arizona State University, USA) • S. Gauthier (Commissariat à l'Energie Atomique, France) • G.A. Glatzmaier (University of California at Santa Cruz, USA) • W.A. Goddard III (California Institute of Technology, USA) • L.P. Kadanoff (The University of Chicago, USA) • D.P. Lathrop (University of Maryland, USA) • S. Lebedev (Imperial College, UK) • P. Manneville (Ecole Polytechnique, France) • D.I. Meiron (California Institute of Technology, USA) • H. Nagib (Illinois Institute of Technology, Chicago, USA) • J. Niemela (International Center for Theoretical Physics, Italy) • K. Nishihara (Institute for Laser Engineering, Osaka, Japan) • S.A. Orszag (Yale University, USA) • E. Ott (University of Maryland, USA) • N. Peters (RWTS, Aachen, Germany) • S.B. Pope (Cornell, USA) • B.A. Remington (Lawrence Livermore National Laboratory, USA) • R. Rosner (Argonne National Laboratory, USA) • A. Schmidt (Naval Research Laboratory, USA) • K.R. Sreenivasan (International Centre for Theoretical Physics, Italy) • V. Steinberg (Weiznmann Institute, Israel) • A.L. Velikovich (Naval Research Laboratory, USA) • P.K. Yeung (Georgia Institute of Technology, USA) • F.A. Williams (University of California at San Diego, USA) Local Organizing Committee at the ICTP • Snezhana I. Abarzhi • Joseph Niemela • Katepalli R. Sreenivasan Assistance • Suzie Radosic (administrator, ICTP, Trieste, Italy) • Elena Magnus (assistant, Chicago, USA) • Daniil Ilyin (web-master, Chicago, USA) 4 TABLE of CONTENTS • Preface: . 6 • Turbulence: . 7 invariant, scaling, spectral properties, scalar transports • Turbulent mixing: . 14 unsteady and multiphase flows, inhomogeneous, anisotropic, non-local dynamics • High energy density physics: . 21 laser-material interaction, Z-pinches, laser-driven, heavy-ion and magnetic fusion • Plasmas: . 28 coupled plasmas, anomalous resistance, ionosphere • Astrophysics: . 34 supernovae, interstellar medium, star formation, stellar interiors, early Universe, cosmic micro-wave background • Magneto-hydrodynamics: . 40 magneto-convection, magneto-rotational instability, accretion disks, dynamo • Geophysics: . 44 turbulent convection under stratification, rotation, anisotropy • Physics of atmosphere: . 50 environmental fluid dynamics, forecasting • Wall-bounded flows: . 54 structure and fundamentals, unsteady boundary layers, super-sonic flows • Combustion: . 60 dynamics of flames, fires, blast waves and explosions • Material science: . 65 properties of materials under high strain rates, dynamics at nano- and micro-scales • Interfacial dynamics: . 67 Rayleigh-Taylor, Richtmyer-Meshkov and Kelvin-Helmholtz instabilities • Mathematical aspects of multi-scale dynamics: . 76 vortex dynamics, singularities, discontinuities, asymptotic dynamics, weak solutions, well- and ill-posedness • Advanced numerical simulations: . 82 continuous DNS/LES/RANS, Molecular dynamics, Monte-Carlo, predictive modeling • Experimental diagnostics: . 94 flow visualization and control, novel optical methods and high-tech • Stochastic processes and probabilistic description: . 98 data analysis, error estimate, uncertainty quantification, anomalous diffusion, long-tail distributions, wavelets • Index of presentations . 103 • Authors’ index . 113 5 Preface The goals of the Conference are to expose the generic problem of Turbulence and Turbulent Mixing in Unsteady Flows to a wide scientific community, to promote the development of new ideas in tackling the fundamental aspects of the problem, to assist in application of novel approaches in a broad range of phenomena, where the turbulent processes occur, and to have a potential impact on technology. The Conference provides the opportunity to bring together scientists from the areas, which include but are not limited to high energy density physics, plasmas, fluid dynamics, turbulence, combustion, material science, geophysics, astrophysics, optics and telecommunications, applied mathematics, probability and statistics, and to have their attention focused on the long-standing formidable task. The Turbulent Mixing and Turbulence in Unsteady Flows, including multiphase flows, plays a key role in a wide variety of phenomena, ranging from astrophysical to nano-scales, under either high or low energy density conditions. Inertial confinement and magnetic fusion, light-matter interaction and non- equilibrium heat transfer, properties of materials under high strain rates, strong shocks, explosions, blast waves, supernovae and accretion disks, stellar non- Boussinesq and magneto-convection, planetary interiors and mantle-lithosphere tectonics, premixed and non-premixed combustion, oceanography, atmospheric flows, unsteady boundary layers, hypersonic and supersonic flows, are a few examples to list. A grip on unsteady turbulent processes is crucial for cutting-edge technology such as laser-micromachining and free-space optical telecommunications, and for industrial applications such as aeronautics. Unsteady Turbulent Processes are anisotropic, non-local and multi-scale, and their fundamental scaling, spectral and invariant properties differ from those of classical Kolmogorov turbulence. The singular aspects and similarity of the mixing dynamics are interplayed with fundamental properties of the Euler and compressible Navier-Stokes equations, with the problem sensitivity to the boundary conditions at the discontinuities and the initial conditions, and with its stochastic description. The state-of-the-art numerical simulations of the multi-phase non-equilibrium dynamics suggest new methods for capturing discontinuities and singularities and shock- interface interaction, for predictive modeling of the multi-scale dynamics in fluids and plasmas, for error estimate and uncertainty quantification as well as for novel data assimilation techniques. The Organizing Committee hopes the TMBW will serve to advance the state-of-the-art in understanding of fundamental physical properties of turbulent mixing and turbulence in unsteady flows and will have an impact on predictive modeling capabilities, physical description and, ultimately, control of these complex processes. The Book of Abstracts includes all accepted contributions: 150 lectures, talks, tutorials and posters, in a broad variety of Themes, sorted alphabetically within each theme. You are invited to take a look at this book for information on the frontiers of theoretical, numerical and experimental research and technology. 6 TURBULENCE Percolation scalings and turbulent transport in the presence of flow topology reconstruction O. Bakunin Plasma Turbulence Laboratory, Theoretical Department, Nuclear Fusion Institute, Russian Research Center Kurchatov Institute,
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