Advances in Turbulence VI : Proceedings of the Sixth European Turbulence Conference, Held in Lausanne, Switzerland, 2–5 July 1996

__Advances in Turbulence VI__ presents an update on the state of turbulence research with some bias towards research in Europe, since it represents an almost complete collection of the paper presentations at the __Sixth European Turbulence Conference__, sponsored by EUROMECH, ERCOFTAC and COST, and held at the Swiss Federal Institute of Technology in Lausanne, July 2-5, 1996. The problem of transition, together with the structural description of turbulence, and the scaling laws of fully developed turbulence have continued to receive most attention by the research community and much progress has been made since the last European Turbulence Conference in 1994. The volume is thus geared towards specialists in the area of flow turbulence who could not attend the conference, as well as anybody who wishes quickly to assess the most active current research areas and the groups associated with them. Front Matter....Pages i-xxi Front Matter....Pages 1-1 Direct Numerical Simulation of Transitional Backward-Facing Step Flow Manipulated by Oscillating Blowing/Suction....Pages 3-6 Modelling Turbulent Sheared Convection....Pages 7-10 Space Structure of the Free, Unsteady, Round, Homogeneous Jet at Low Reynolds Numbers....Pages 11-14 Large-Eddy SImulation of Aircraft Exhaust Plumes in the Free Atmosphere....Pages 15-18 Large-Eddy Simulation of Turbulent Flows in Baffled Stirred Tank Reactors....Pages 19-22 An Exact SGS-Model for Les....Pages 23-26 Alternative Approach to Modelling the Dissipation Equation....Pages 27-30 A New Explicit Algebraic Reynolds Stress Model....Pages 31-34 Effects of Stable Stratification Upon Coherent Vortices Behind a Backward-Facing Step....Pages 35-38 Large Eddy Simulation of Turbulent Mixing....Pages 39-42 Strouhal Number Evaluation by 3D Lattice Gas Simulations....Pages 43-46 Instability Considerations for Velocity Streaks in Near-Wall Turbulence....Pages 47-50 Reynolds stress budgets of low Reynolds number pipe expansion flow....Pages 51-54 Numerical Study of Mechanisms of Boundary-Layer Transition after a Separation Bubble....Pages 55-58 Investigating Flow Topologies in Boundary Layer Transition by Numerical Simulation....Pages 59-60 Assessment of K-∈ and Reynolds-Stress Turbulence Models in a Ninety-Degree Pipe Bend....Pages 61-62 Enhancement of Finite Reynolds Number Effects in the Turbulent Boundary Layer Due to Inner-Outer Sublayer Interaction....Pages 63-64 Dynamics of Coherent Structures Near a Rotating Body....Pages 65-66 A Pointwise Low-Re K — ε Turbulence Model....Pages 67-68 Large Eddy Simulation of a Planar Co-Flowing Jet....Pages 69-70 Front Matter....Pages 1-1 Predictions of Higher Moments by a Realizable Second-Moment Turbulence Model....Pages 71-72 Numerical Simulations of Inhomogeneous Turbulence Generated by an Oscillating Grid and Submitted to Solid-Body Rotation....Pages 73-74 A Spectral Closure for Inhomogeneous Turbulence Applied to Turbulent Confined Flow....Pages 75-76 Reynolds Stress Modeling of Separated Flows Over Curved Surfaces....Pages 77-78 Predicting Transition with Turbulence Models....Pages 79-80 Front Matter....Pages 81-81 Coherent Structures: Past, Present and Future....Pages 83-90 Growth and Decay of Longitudinal Roll Cells in Rotating Turbulent Plane Couette Flow....Pages 91-94 Vortex Persistence....Pages 95-98 The Relation between the Internal Structure of the Coherent Vortex and Heat Transfer Processes....Pages 99-102 Dissipative Flow Structures within Near-Wall Turbulence-Producing Events....Pages 103-106 Ejections, Bursts and Sweeps in Stochastic Signals....Pages 107-110 Application of the Vortex Patch Theory to Forced Two-Dimensional Turbulence....Pages 111-114 Dynamics of a Strong Vortex Tube in a Uniform Shear Flow....Pages 115-118 Long-Range Order and Deformation Radius Effects in 2-D Turbulence....Pages 119-120 A Sublayer Bursting Model for Turbulent Boundary Layers....Pages 121-124 Coherent Contribution to the Turbulent Mixing of a Buoyant Jet in Cross Flow....Pages 125-128 Effects of Shear-Layer Roll-Up on Axisymmetric DNS Velocity Signals in a Coaxial Jet Configuration....Pages 129-132 Vortex Stretching and Filaments....Pages 133-136 Final States of Incompressible Two Dimensional Decaying Vorticity Fields....Pages 137-140 The Influence of Shallowness on Large-Scale Coherent Structures....Pages 141-144 Front Matter....Pages 81-81 Kolmogorov Capacities of Streamlines Around Turbulent Vortex Tubes....Pages 145-148 Vortex Quadrupoles and Propagation of Grid Turbulence....Pages 149-152 Momentum and Heat Transport in a Quasi 2-D Flow....Pages 153-154 Front Matter....Pages 155-155 Simulation of Turbulent Flows for Industrial Applications: A Fluid Engineer’s View....Pages 157-162 Airfoil Stall Prediction using a Two-Equation and an Explicit Algebraic Stress Model....Pages 163-166 Turbulence and Financial Markets....Pages 167-170 A Simple Model of Turbulence Intensity and Turbulence Scale Distribution in Gravel Bed Rivers....Pages 171-174 The Symmetry Properties of the Flow in a Nuclear Reactor Vessel....Pages 175-176 Investigations in the Near Field of a Nominally Two-Dimensional Strong Acoustic Perturbation Source....Pages 177-178 Interaction between the Turbulent Boundary Layer and a Three-Dimensional Hill....Pages 179-180 Experimental and Numerical Investigations of Rotating and Swirl Effects in a Rapid-Compression-Machine (RCM)....Pages 181-182 Turbulent Flow Around Circular Cylinder Affected by Incident Stream Oscillations....Pages 183-184 Heat transfer in a stably stratified grid-generated flow....Pages 185-186 Turbulence in the Wake of a Delta Wing....Pages 187-188 Front Matter....Pages 189-189 Scaling Laws in Fully Developed Turbulence....Pages 191-196 Helical Shell Models for Three Dimensional Turbulence....Pages 197-200 Subgrid-Resolved Scale Dynamics in Isotropic Turbulence....Pages 201-204 Evolution of a Perturbation in a Turbulent Jet Flow....Pages 205-208 Experimental Analysis of Intermittency in the Dissipation Range of Turbulent Flows....Pages 209-212 High Rayleigh Number Convection with Gaseous Helium at Low Temperature....Pages 213-214 Front Matter....Pages 189-189 Influence of a Large Scale Vortex on Turbulence Small Scale Properties....Pages 215-218 Influence of Prandtl Number on Strongly Turbulent Rayleigh-Bénard Convection....Pages 219-222 A Similarity Hypothesis for the Two-Point Velocity Correlations in a Temporally Evolving Wake....Pages 223-226 Dissipation Properties of Near-Singularities in Small-Scale Turbulence....Pages 227-230 Probability Distribution Functions for Navier-Stokes Turbulence....Pages 231-234 Transverse Velocity Structure Functions in Developed Turbulence....Pages 235-238 Nonlinear Interactions in Turbulence with Strong Irrotational Straining....Pages 239-242 Small Scale Intermittency and the Renormalization Group....Pages 243-246 On Kolmogorov’s Third Order Structure Function Law, the Local Isotropy Hypothesis and the Pressure-Velocity Correlation....Pages 247-250 Experimental Check of Infinite Divisibility for the Velocity Cascade in Developed Turbulence....Pages 251-254 Reynolds Number Dependance of the Vorticity Alignment with the Three Principal Rates of Strain....Pages 255-258 Scaling Properties of the Velocity Circulation in a Turbulent Shear Flow....Pages 259-262 Geometrical Statistics in Turbulence....Pages 263-266 Numerical Simulation of Turbulent Low-Prandtl Convection in a Cylindrical Cell....Pages 267-270 High Reynolds Number Experiment: Transition and Structures....Pages 271-274 Investigation of the Spatial Structure of Turbulence in the Wake Behind Bluff Bodies....Pages 275-276 On Exponent of Vortex Number in 2D Turbulence....Pages 277-278 Wavelet Analysis of High-Resolution Turbulence Data....Pages 279-280 The Continuum Limit in a Shell Model of Turbulence....Pages 281-282 A Numerical Study of Upper Bounds on the Heat Transport by Turbulent Convection in a Fluid Layer Heated from Below....Pages 283-284 Front Matter....Pages 285-285 Large-Eddy Simulations of Weakly Compressible Isotropic Turbulence....Pages 287-290 Multi-fractals in Compressible Turbulence....Pages 291-294 Fine Structure of Turbulence in a Boundary Layer with Strong Density Differences....Pages 295-298 Second Order Entropy Consistent Modelling of Turbulent Compressible Flows....Pages 299-300 Pattern Formation in Passive Scalar Distribution in Compressible Turbulent Fluid Flow....Pages 301-304 A Two-Scale Turbulence Model for Compressible Mixing Flows....Pages 305-306 Front Matter....Pages 307-307 Higher Bifurcations in Fluid Flows and Coherent Structures in the Turbulent State....Pages 309-312 The Stability of Steady and Periodic Solutions of a Low-Dimensional Dynamical System for 2D Driven Cavity Flows....Pages 313-316 Existence and Stability of Finite-Amplitude States in Plane Couette Flow....Pages 317-320 On the Relation between Low-Dimensional Models Based on POD and Dynamics of Coherent Structures in a Turbulent Plane Mixing Layer....Pages 321-324 Spatial Numerical Simulations and Experiments on the Breakdown of Streamwise Vortices in a Blasius Boundary Layer....Pages 325-328 Pairs of counter-rotating streamwise vortices: A finite amplitude solution in plane Couette flow....Pages 329-332 Nonlinear Interaction of Laminar Three-Dimensional Disturbances in Plane Poiseuille Flow....Pages 333-334 Large-Scale Kolmogorov Flow on the Beta-Plane, Resonant Wave Interactions and Scale Selection....Pages 335-336 Experiments on a 2:1 Resonance in the Blasius Boundary Layer....Pages 337-340 Some Stability-Properties of Couette-Ekman Flow....Pages 341-344 On the Boundary Layer Transition in Turbulent Flows with Various Length Scales....Pages 345-346 On Transition to Instability in Weakly Inhomogeneous Flows without Dissipation....Pages 347-350 Stability of the Stuart Vortices in a Rotating Frame....Pages 351-354 On the Three-Dimensional Instability of Elliptical Vortices Subjected to Stretching....Pages 355-356 Front Matter....Pages 307-307 Experimental Investigation of Nonlinear Wave Interactions and Secondary Instability in Three-Dimensional Boundary-Layer Flow....Pages 357-360 Instabilities in Trailing Vortices and in the Temporal Development of Vortex Pairs....Pages 361-364 Absolute Instability of the Rotating-Disk Boundary Layer — Theory and Experiment....Pages 365-368 A Time-Reversed Approach to the Study of Görtler Instabilities....Pages 369-370 Laminar-Turbulent Transition in Pipe Flow....Pages 371-374 Physical Analysis of the Three-Dimensional Transition to Turbulence in the Flow Around a Circular Cylinder by Means of Direct Numerical Simulation....Pages 375-378 Wake Transition in Coaxial Jets....Pages 379-380 Transition Thresholds in Boundary Layer and Channel Flows....Pages 381-384 Experimental Study of the Stability of the Flow between a Rotating and a Stationary Disk....Pages 385-388 Direct Numerical Simulation of High Rayleigh Number Convection in a Rotating and Non-Rotating Spherical Shell: The Prandtl Number Dependence....Pages 389-390 Experiments On Rotating Plane Couette Flow....Pages 391-394 Natural Transition in an Adverse Pressure Gradient Boundary Layer....Pages 395-398 Three-Dimensional Wake Transition....Pages 399-402 Stability of the Spiral Flow in the Annulus between Concentric Cylinders....Pages 403-404 Spatial Numerical Simulations of Transition to Turbulence in a Curved Channel Rotating around the Spanwise Axis....Pages 405-406 Dynamics of a Chain of Coupled Wakes....Pages 407-408 Experimental Study of Artificial Hairpin Vortices....Pages 409-410 Front Matter....Pages 411-411 Interactive Control of Wall Structures by MEMS-Based Transducers....Pages 413-416 An Investigation of the Turbulence Field in a Three-Dimensional Wall Jet....Pages 417-420 Spatial Enstrophy Spectrum in a Fully Turbulent Jet....Pages 421-424 Front Matter....Pages 411-411 On Turbulization of the Tornado-Like Vortices and Transition to a System of Vortices....Pages 425-428 Three-Dimensional Turbulent Boundary Layer in an “S”- Shaped Duct....Pages 429-432 Some Turbulence Characteristics Downstream a Shock Wave - Boundary Layer Interaction....Pages 433-436 Scaling of Vorticity Filaments in a Turbulent Swirling Flow....Pages 437-440 Dynamical Flow Tomography by Laser Induced Fluorescence....Pages 441-444 Low Reynolds Number Turbulent Near Wakes....Pages 445-448 On Some Local Aspects of Turbulent Drag Reducing Flows of Dilute Polymers and Surfactants....Pages 449-452 Measurements in a Three-Dimensional Separation....Pages 453-456 The Measurement of Turbulent Structure Using PIV....Pages 457-460 Preliminary Experiments on the Control of Three-Dimensional Modes in the Flow Over a Backward-Facing Step....Pages 461-464 An Integrated Silicon based Wall Pressure-Shear Stress Sensor for Measurements in Turbulent Flows....Pages 465-469 Separation Control on a Glider Wing with Artificial Bird’s Feathers....Pages 471-472 Experimental Investigation of the Axisymmetric Shear Layer between Coaxial Jets with Swirl....Pages 473-476 Near-Wall Strong Sweeps and High Kurtosis Levels....Pages 477-478 Investigation of the Dynamics of Near-Wall Turbulence Using Nonlinear Time Sequence Analysis....Pages 479-482 A Tristatic Doppler Velocity Profiler and its Application to Turbulent Open-Channel Flow....Pages 483-486 Turbulent Separation Regions in Front and Downstream of a Fence....Pages 487-490 Measurement of Pressure-Strain through Two-Point Velocity Correlations in Homogeneous Axisymmetric Turbulence....Pages 491-494 Conditional Sampling of Dissipation in Large-Scale Rotational Regions of Grid Turbulence....Pages 495-498 An Application of 3D-PTV on the Measurement of Turbulent Quantities and Particle Dispersion in Turbulent Channel Flow....Pages 499-502 Front Matter....Pages 411-411 Measurement of Flow Structures in a Turbulent Boundary Layer....Pages 503-506 Correlation between the Enstrophy and the Energy Dissipation Rate in a Turbulent Wake....Pages 507-510 Influence of the Transverse Shear on the Development of Wake Flows....Pages 511-512 The Unsteady Spectral Properties of Turbulent Channel Flow at Time Variant Boundary Conditions....Pages 513-514 Measurements of a Strongly Swirling Pipe Flow....Pages 515-516 The Boundary Layer Approximation: An Application to Energy Transport in Wakes....Pages 517-518 Spectral Analysis of Near Wall Turbulent Flow....Pages 519-520 Investigation of the Effects of Base Injection on the Flow Field Past a Square Cylinder....Pages 521-522 Simultaneous Measurements of Temperature and Velocity Combining Cold Wire and Laser Doppler Velocimetry in a Slightly Heated Turbulent Jet....Pages 523-524 The Measurement of Velocity and Velocity Gradients in a Turbulent Channel by Using Different Particle Tracers....Pages 525-526 Feedback Control of Vortex Shedding: Three-Dimensional Effects....Pages 527-528 Turbulence Manipulation in Wall Jets....Pages 529-530 An Experimental Validation of the “Frozen” Turbulence Hypothesis for River Flows....Pages 531-532 Front Matter....Pages 533-533 Turbulent Two-Phase Flow....Pages 535-541 Turbulent Thermal Diffusion of Small Inertial Particles....Pages 543-546 Numerical Study of Bubble and Particle Motion in a Turbulent Boundary Layer using Proper Orthogonal Decomposition....Pages 547-550 The Effects of Shear and Spin on Particle Lift and Drag in a Shear Flow at High Reynolds Numbers....Pages 551-554 Turbulence Structure near a Shear-Free Gas-Liquid Interface in Stably Stratified Open-Channel Flows....Pages 555-558 Linear Stability of Two-Phase Flows....Pages 559-562 Experimental Study of the Flow Behind an Elongated Bubble in a Vertical Pipe....Pages 563-566 Front Matter....Pages 533-533 Buoyancy Profile Effects in Inclined Bubbly Shear Flow....Pages 567-570 Correction Factor for Void Fraction Measurements with a Line Sensor....Pages 571-572 Statistical Results on Bubble Trajectories in Turbulent Boundary Layer....Pages 573-574 Front Matter....Pages 575-575 Anomalous Scaling Exponents of a Passive Scalar Advected by Turbulence....Pages 577-580 Direct Numerical Simulation of Turbulent Liquid Taylor Vortex Flow with an Immiscible Droplet....Pages 581-584 Direct Numerical Simulation of Heavy-Gas Dispersion in a Plane Channel....Pages 585-588 Stochastic Models of Dispersion and Mixing in Homogeneous Turbulence....Pages 589-592 The Early Stages of Turbulent Micromixing....Pages 593-594 Frequency Spectra of Scalar and Velocity Fluctuations at Entraining Stratified Interfaces....Pages 595-596 Dispersion in Homogeneous Stratified Flows using Kinematic Simulations....Pages 597-600 Coherent Structures and Scales of Lagrangian Turbulence....Pages 601-604 Vertical Microstructure and Mixing in Stratified Flows....Pages 605-608 Analytical Solution of the Concentration Probability Density Equation in Decaying Grid Generated Turbulence with a Mean Scalar Gradient....Pages 609-612 Experimental Probability Density Functions of a Passive Scalar in a Turbulent Görtler Flow and Comparison with the Pope and Ching Model....Pages 613-614 An Equation for the Probability Density Function of Temperature Increments in a Boundary Layer....Pages 615-616 Kinematic Simulation of Two-Particle Dispersion....Pages 617-618 Structural Diffusion in 2D and 3D Random Flows....Pages 619-620 Probability Distribution Function for the Gradient of a Passive Scalar Diffusing in Isotropic Turbulence: Mapping-Closure Model....Pages 621-624 Back Matter....Pages 625-634