Seventh IUTAM Symposium on Laminar-Turbulent Transition: Proceedings of the Seventh IUTAM Symposium on Laminar-Turbulent Transition, Stockholm, Sweden, 2009

ISBN-13: 9789048137220 / Angielski / Twarda / 2009 / 608 str.

Philipp Schlatter;Dan S. Henningson

Opis

The dynamics of transition from laminar to turbulent flows remains to this day a major challenge in theoretical and applied mechanics. The subject is of significance in diverse areas like gas turbines, underwater applications, flow control etc. This volume will contain approximately 100 papers on flow instability, transition to turbulence, flow control, etc., of presentations made during the seventh IUTAM symposium on laminar-turbulent transition, Stockholm, Sweden, 2009. It thus equips the reader with the latest in research in this area. For the present volume, the areas of emphasis are: Novel approaches to receptivity analysis and transition modeling, Non-normal effects and global modes, Stability of complex flows, such as non-Newtonian and miscible-interface flows, Transition in simple shear flows and its relation to properties of non-linear dynamical systems, Modern feedback control and design techniques applied to transition, Transition in high-speed flows, Direct and Large-Eddy Simulation of transition, Applied Laminar Flow Control.

Spis treści

Preface; Part I Invited Presentations; A Gradient-based Optimization Method for Natural Laminar Flow Design, by A. Hanifi, O. Amoignon, J. O. Pralits, M. Chevalier; A Thermodynamic Lower Bound on Transition-Triggering Disturbances, by Paolo Luchini; Hypersonic boundary layer transition and control, by A. A. Maslov, T. Poplavskaya, D. A. Bountin; Instabilities of Miscible Interfaces, by Eckart Meiburg; Large-eddy simulations of relaminarization due to freestream acceleration, by Ugo Piomelli, Carlo Scalo; Reduced-order models for flow control: balanced models and Koopman modes, by Clarence W. Rowley, Igor Mezik, Shervin Bagheri, Philipp Schlatter, Dan S. Henningson; The description of fluid behavior by coherent structures, by Peter J. Schmid; Instability of uniform turbulent plane Couette flow: spectra, probability distribution functions and K - O closure model, by Laurette S. Tuckerman, Dwight Barkley, Olivier Dauchot; Part II Oral Presentations; Sensitivity to base-flow variation of a streamwise corner flow, by Frédéric Alizard, Jean-Christophe Robinet, Ulrich Rist; Transition Control Testing in the Supersonic S2MA Wind Tunnel (SUPERTRAC project), by J.-P. Archambaud, D. Amal, J.-L. Godard, S. Hein, J. Krier, R. S. Donelli, A.Hanifi; Breakdown of Low-Speed Streaks under High-Intensity Background Turbulence, by Masahito Asai, Motosumi Yamanouchi, Ayumu Inasawa, Yasufumi Konishi; Numerical Study on Transition of a Channel Flow with Longitudinal Wall-oscillation, by Takashi Atobe, Kiyoshi Yamamoto; Direct Numerical Simulation of the Mixing Layer past Serrated Nozzle Ends, by Andreas Babucke, Markus J. Kloker, Ulrich Rist; Receptivity of a supersonic boundary layer to shock-wave oscillations, by Andreas Babucke, Ulrich Rist; Roughness receptivity studies in a 3-D boundary layer - Flight tests and computations, by Andrew L. Carpenter, William S. Saric, Helen L. Reed; DNS investigations of steady receptivity mechanisms on a swept cylinder, by G. Casalis, E. Piot;Experimental Study of the Incipient Spot Breakdown Controlled by Riblets, by V. Chemoray, G. R. Grek, V. V. Kozlov, Y. A. Litvinenko; Control of Stationary Cross-flow Modes Using Patterned Roughness at Mach3.5 , by Thomas Corke, Eric Matlis, Chan-Yong Schuele, Stephen Wilkinson, Lewis Owens, P. Balakumar; Secondary optimal growth and subcritical transition in the plane Poiseuille flow, by Carlo Cossu, Mattias Chevalier, Dan S. Henningson; Disturbance evolution in rotating-disk boundary layers: competition between absolute instability and global stability, by Christopher Davies, Christian Thomas; Instabilities due a vortex at a density interface: gravitational and centrifugal effects, by Harish N. Dixit, Rama Govindarajan; Wave Packets of Controlled Velocity Perturbations at Laminar Flow Separation, by Alexander Dovgal, Alexander Sorokin; Linear Stability Analysis for Manipulated Boundary-Layer Flows using Plasma Actuators, by A. Duchmann, A. Reeh, R. Quadros, J. Kriegseis, C. Tropea; Stripy patterns in low-Re turbulent plane Couette flow, by Yohann Duguet, Philipp Schlatter, Dan S. Henningson; Characterization of the three-dimensional instability in a lid-driven cavity by an adjoint based analysis, by Flavio Giannetti, Paolo Luchini, Luca Marino; Bi-global crossplane stability analysis of high-speed boundary-layer flows with discrete roughness, by Gordon Groskopf, Markus J. Kloker, Olaf Marxen; Time-resolved PIV investigations on the laminar-turbulent transition over laminar separation bubbles, by Rainer Hain, Christian J. Kiihler and Rolf Radespiel; Control of transient growth induced boundary layer transition using plasmaactuators, by Ronald E. Hanson, Philippe Lavoie, Ahmed M. Naguib, Jonathan F. Morrison; Laminar Flow Control by Suction at Mach 2, by S. Hein, E. Schülein, A. Hanifi, J. Sousa, D. Amal; Decay of turbulent bursting in enclosed flows, by Kerstin Hochstrate, Jan Abshagen, Marc Avila, Christian Will, Gerd Pfister; Local and Global Stability of

Blurb

The origins of turbulent flow and the transition from laminar to turbulent flow are the most important unsolved problems of fluid mechanics and aerodynamics. Besides being a fundamental question of fluid mechanics, there are numerous applications relying on accurate information regarding transition location and the details of the subsequent turbulent flow. While considerable progress has been made in the understanding of laminar-turbulent transition over the last 30 years, the continuing increase in computer power as well as new theoretical developments are now revolutionizing the area.

This volume contains 110 papers of presentations delivered during the "Seventh IUTAM Symposium on Laminar-Turbulent Transition" in Stockholm, Sweden, June 2009. The areas of emphasis include:

Novel approaches to receptivity analysis and transition modelling.

Non-normal effects and global modes.

Stability of complex flows, such as non-Newtonian and miscible-interface flows.

Transition in simple shear flows and its relation to properties of non-linear dynamical systems.

Modern feedback control and design techniques applied to transition.

Transition in high-speed flows.

Direct and Large-Eddy Simulation of transition.

Applied Laminar Flow Control.