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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.

Fluid mechanics --- Gases handling. Fluids handling --- vloeistofstroming --- aerodynamica --- ingenieurswetenschappen --- vloeistoffen

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The physical principles of swimming and flying in animals are intriguingly different from those of ships and airplanes. The study of animal locomotion therefore holds a special place not only at the frontiers of pure fluid dynamics research, but also in the applied field of biomimetics, which aims to emulate salient aspects of the performance and function of living organisms. For example, fluid dynamic loads are so significant for swimming fish that they are expected to have developed efficient flow control procedures through the evolutionary process of adaptation by natural selection, which might in turn be applied to the design of robotic swimmers. And yet, sharply contrasting views as to the energetic efficiency of oscillatory propulsion - especially for marine animals - demand a careful assessment of the forces and energy expended at realistic Reynolds numbers. For this and many other research questions, an experimental approach is often the most appropriate methodology. This holds as much for flying animals as it does for swimming ones, and similar experimental challenges apply - studying tethered as opposed to free locomotion, or studying the flow around robotic models as opposed to real animals. This book provides a wide-ranging snapshot of the state-of-the-art in experimental research on the physics of swimming and flying animals. The resulting picture reflects not only upon the questions that are of interest in current pure and applied research, but also upon the experimental techniques that are available to answer them.

Fluid mechanics --- General biophysics --- Gases handling. Fluids handling --- vloeistofstroming --- aerodynamica --- biofysica --- ingenieurswetenschappen --- vloeistoffen

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The study of wall-bounded turbulent flows is of considerable interest from both scientific and practical view points. As such it has attracted a great deal of research over the last 100 years. Much research has concentrated on flows over smooth walls since these are simpler from experimental, numerical and theoretical standpoints. The flow over rough walls has still received considerable attention but progress has necessarily been slower. Perhaps the most essential problem (certainly from a practical point of view) is to be able to predict the skin-friction drag acting on a plate (or a body) given a certain known roughness characteristic of the surface. Unfortunately this has proved to be very difficult since even the simplest rough surfaces can be characterised by a number of different parameters and we still cannot directly connect these to the fluid dynamic drag in a given situation. Various theories and models have been proposed in order to make progress but there is still some disagreement in the community as to the correct understanding of these important flows. The IUTAM Symposium on the Physics of Wall-bounded Flows on Rough Walls was held in Clare College, Cambridge from the 7th - 9th July 2009 in order to bring together various expert researchers in the field to try and resolve some of these disagreements and to develop a consensus on the most fruitful directions of future research.

Mathematical physics --- Fluid mechanics --- Gases handling. Fluids handling --- vloeistofstroming --- aerodynamica --- theoretische fysica --- wiskunde --- ingenieurswetenschappen --- fysica --- vloeistoffen

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This book collects the proceedings of the Parallel Computational Fluid Dynamics 2008 conference held in Lyon, France. Contributed papers by over 40 researchers representing the state of the art in parallel CFD and architecture from Asia, Europe, and North America examine major developments in (1) block-structured grid and boundary methods to simulate flows over moving bodies, (2) specific methods for optimization in Aerodynamics Design, (3) innovative parallel algorithms and numerical solvers, such as scalable algebraic multilevel preconditioners and the acceleration of iterative solutions, (4) software frameworks and component architectures for parallelism, (5) large scale computing and parallel efficiencies in the industrial context, (6) lattice Boltzmann and SPH methods, and (7) applications in the environment, biofluids, and nuclear engineering.

Mathematical physics --- Fluid mechanics --- Engineering sciences. Technology --- Computer science --- vloeistofstroming --- aerodynamica --- theoretische fysica --- informatica --- informaticaonderzoek --- ingenieurswetenschappen

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The study of wall-bounded turbulent flows is of considerable interest from both scientific and practical view points. As such it has attracted a great deal of research over the last 100 years. Much research has concentrated on flows over smooth walls since these are simpler from experimental, numerical and theoretical standpoints. The flow over rough walls has still received considerable attention but progress has necessarily been slower. Perhaps the most essential problem (certainly from a practical point of view) is to be able to predict the skin-friction drag acting on a plate (or a body) given a certain known roughness characteristic of the surface. Unfortunately this has proved to be very difficult since even the simplest rough surfaces can be characterised by a number of different parameters and we still cannot directly connect these to the fluid dynamic drag in a given situation. Various theories and models have been proposed in order to make progress but there is still some disagreement in the community as to the correct understanding of these important flows. The IUTAM Symposium on the Physics of Wall-bounded Flows on Rough Walls was held in Clare College, Cambridge from the 7th - 9th July 2009 in order to bring together various expert researchers in the field to try and resolve some of these disagreements and to develop a consensus on the most fruitful directions of future research.

Mathematical physics --- Fluid mechanics --- Gases handling. Fluids handling --- vloeistofstroming --- aerodynamica --- theoretische fysica --- wiskunde --- ingenieurswetenschappen --- fysica --- vloeistoffen