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Full Description
Besides turbulence, there is hardly any other scientific topic which has been considered a prominent scientific challenge for such a long time. The special interest in turbulence is not only based on it being a difficult scientific problem but also on its meaning in the technical world and our daily life. This carefully edited book comprises recent basic research as well as research related to the applications of turbulence. Therefore, both leading engineers and physicists working in the field of turbulence were invited to the iTi Conference on Turbulence held in Bad Zwischenahn, Gemany 21st - 24th of September 2003. Topics discussed include, for example, scaling laws and intermittency, thermal convection, boundary layers at large Reynolds numbers, isotropic turbulence, stochastic processes, passive and active scalars, coherent structures, numerical simulations, and related subjects.
Contents
Mathematical Methods.- Passive Scalar Diffusion as a Damped Wave.- Extremalizing Vector Fields as Guides Toward Understanding Properties of Turbulence.- Low-Wavenumber Forcing and Turbulent Energy Dissipation.- New Potential Symmetries for a Generalised Inhomogeneus Nonlinear Diffusion Equation.- DNS and New Scaling Laws of ZPG Turbulent Boundary Layer Flow.- Linear Instability of a Slowly Divergent Planar Jet.- On How Different Are Genuine and 'Passive' Turbulence.- Upper Bound on the Heat Transport in a Heated From Below Fluid Layer.- Scaling Laws and Intermittency.- Symmetries and Boundary Layer Profiles for Scalar Fields.- Energy and Dissipation Balances in Rotating Flows.- Turbulent Cascade with Intermittency in View of Fragmentation Universalities.- Observational Impact of Surrogacy on the Turbulent Energy Cascade.- Conditional Statistics of Velocity Increments in Fully Developped Turbulence.- A Simple Relation Between Longitudinal and Transverse Increments.- Intermittency Exponent in High-Reynolds Number Turbulence.- Modelling.- An Alternative Model for Turbulent Flow and Forced Convection.- Langevin Models of Turbulence.- Renormalized Perturbation Theory for Lagrangian Turbulence.- Modelling of the Pressure-Strain- and Diffusion-Term in Rotating Flows.- Predicting Probability for Stochastic Processes with Local Markov Property.- Stability of Turbulent Kolmogorov Flow.- Conditional Moment Closure Based on Two Conditioning Variables.- Stochastic Partial Differential Equations as a Tool for Solving PDF Equations.- Non-unique Self-similar Turbulent Boundary Layers in the Limit of Large Reynolds Number.- Experiments.- Two-Point-Correlations in a Zero Pressure Gradient Boundary Layer at Re? = 54600.- Measurements Over a Flat Plate With and Without Suction.- MHDTaylor-Couette Flow for Small Magnetic Prandtl Number and With Hall Effect.- Laser-Cantilever-Anemometer.- Heteroclinic Cycles of Type II in the (2,3) Interaction in the GEOFLOW-Experiment.- Experimental Visualization of Streamwise Streaks in the Boundary Layers of Rayleigh—Bénard Convection.- Spatial Correlations in Turbulent Shear Flows.- Hot-Wire and PIV Measurements in a High-Reynolds Number Turbulent Boundary Layer.- Dynamics of Baroclinic Instabilities Using Methods of Nonlinear Time Series Analysis.- Fabrication and Characterization of Miniaturized Thermocouples for Measurements in Flows.- Temperature and Velocity Measurements in a Large-Scale Rayleigh-Bénard Experiment.- Statistics and Scaling of the Velocity Field in Turbulent Thermal Convection.- Simulation (DNS and LES).- Nonlinear Stochastic Estimation: A Tool for Deriving Appropriate Wall Models for LES.- Generation of Mean Flows in Turbulent Convection.- Control of a Turbulent Separation Bubble by Periodic Excitation.- Stretching Rate of Passive Lines in Turbulence.- Numerical Study of Particle Motion in a Turbulent Ribbed Channel Flow.- A Fresh Approach to Large Eddy Simulation of Turbulence.- Statistical Analysis of Turbulent Natural Convection in Low Prandtl Number Fluids.- Computational Simulation of Transitional and Turbulent Shear Flows.- Direct Numerical Simulations of Turbulent Rayleigh-Bénard Convection in Wide Cylinders.- A Projective Similarity/Eddy-Viscosity Model for Large-Eddy Simulation.- Passive Scalar Transport in Turbulent Supersonic Channel Flow.
