Separated Flows and Jets : IUTAM-Symposium, Novosibirsk, USSR July 9 – 13, 1990

Separated flows and jets are closely linked in a variety of applications. They are of great importance in various fields of fluid mechanics including vehicle efficiency, technical branches concerned with gas/liquid flows, atmospheric effects on various constructions, etc. Knowledge of the physics of separated flows and jets and the development of reliable control techniques are prerequisite for future progress in the field. These aspects were in focus during the IUTAM-Symposium which was held in Novosibirsk, 9-13 July, 1990. This volume contains a selection of papers presenting recent results of theoretical and numerical studies as well as experimental work on separated flows and jets. The topics include sub- and supersonic, laminar and turbulent separation as well as organized structures in separated flows and jets. The reader will find here the state of the art and major trends for research in this field of aero-hydrodynamics. Front Matter....Pages I-XXVII Analysis of Simulations of Topologically Changing Three-Dimensional Separated Flows....Pages 1-14 Numerical Simulation of Separated Flows by the Splitting up Method....Pages 15-24 Break-up in Steady and Unsteady Separation....Pages 25-37 On Goldstein’s Singularity....Pages 39-46 Marginal Separation Theory....Pages 47-54 Effects of 3-D Surface Mounted Obstacles on Marginal Separation....Pages 55-65 Discontinuous Solutions of Boundary Layer Equations with Positive Pressure Gradient....Pages 67-76 Computation of Trailing-Edge Separation Using an Accelerated, Updated Bluff-Body, Interacting Boundary-Layer Algorithm....Pages 77-88 Self-Similar Separation....Pages 89-96 Digital Simulation of Separated and Jet Flows Using Discrete Vortex Method....Pages 97-102 Topology of Fundamental Separation Structures....Pages 103-112 Basic Equations of Vortex Fluid Motion. Vortex-Wave Resonance....Pages 113-116 Numerical Investigation of Turbulent Separated Flows in the Near Wake After Body....Pages 117-120 Asymptotic Theory of the Stationary Flow Around Bluff Bodies....Pages 121-124 Modeling of the Flows with 3-D Separation Caused by Interaction of the Boundary Layers on the Interesting Surfaces....Pages 125-128 Numerical Simulation of the Separated Fluid Flows at Large Reynolds Numbers....Pages 129-132 A Boundary Layer near Small Three-Dimensional Roughnesses in a Supersonic Flow About a Cooled Body....Pages 133-137 Interaction Theory and Non-Uniqueness of Separated Flows Around Solid Bodies....Pages 139-142 Finite Element Simulation of Unsteady Separated Flows....Pages 143-148 Explanation of the Origin of the Secondary Flow in a Straight Square Duct of the Basis of LES....Pages 149-152 Spatial Vortex Structures and Heat Transfer in a Channel Having a Step....Pages 153-156 Some Investigation Results for Vortex-Potential Inviscid Fluid Flows....Pages 157-160 A Simulation of the Wing Leading-Edge Vortex and its Entrainment Effect....Pages 161-166 Numerical Simulation of the Vortex Chain Formation by Vorticity Shedding from a Sphere into the Wake....Pages 167-170 Asymptotic Theory of a Flow near the Trailing Tip of a Slender Axisymmetric Body....Pages 171-174 Numerical Solution of 2-D Helmholtz Problem for Blunt Bodies and Airfoils....Pages 175-180 Numerical Modeling of 3-D Turbulent Flows in Mixers....Pages 181-184 Three-Dimensional Viscous-lnviscid Interactions for Turbulent Flows with Separation....Pages 185-189 Turbulence in Incompressible Separated Flows....Pages 191-205 Separated Flows in Diffuser Ducts....Pages 207-208 Structure of Turbulent Separating Flow in Two-Dimensional Diffusor....Pages 209-216 A Study on Mode of 3-Dimensional Separation and Open Separation....Pages 217-223 Peculiarities of Development and Modeling Possibilities of Supersonic Turbulent Separated Flows....Pages 225-236 Supersonic Separation Zone Pressure Fluctuations for Wide Range of Reynolds Number....Pages 237-243 Turbulence Modeling for Sharpfin-Induced Shock Wave/Turbulent Boundary-Layer Interactions....Pages 245-254 On the Shock-Bifurcation/Jet-Impingement Structure of Swept Interactions and Related Flow-Fields....Pages 255-262 Calculation of 3-D Shock Wave-Turbulent Boundary Layer Interactions Generated by Sharp Fins....Pages 263-278 Flowfield Modeling of a Three-Dimensional Shock Wave Turbulent Boundary Layer Interaction....Pages 279-302 Development of 3-D Separated Flows by Longitudinal Supersonic Flow over the Corner Configurations....Pages 303-310 Leeward Separated Supersonic Flows....Pages 311-317 Experimental and Numerical Studies of Separated Flows About Slender Axisymmetrical Bodies....Pages 319-326 Experimental and Numerical Investigations on Turbulent Separated Diffuser Flows....Pages 327-332 Analysis of Turbulent Separated Flows in the Vicinity of Two-Dimensional Obstacles Under Supersonic Speeds Conditions....Pages 333-336 Non-Stationary Structure at Separation and Turbulent Flow Attachment Zones....Pages 337-340 Some Features of a Separated Flow and Supersonic Vortex Structure at the Leeside of a Delta Wing....Pages 341-344 Separated Flow Around a Delta Wing in Combination with a Body....Pages 345-348 Separated Flow in a Straight Compressor Cascade....Pages 349-360 Secondary Corner and Channel Flow Effects on Shock Induced Turbulent Flow Separation....Pages 361-364 Development of Two-Dimensional Analogies Comformably to Three-Dimensional Separated Flows....Pages 365-368 Three-Dimensional Open Separation in Supersonic Flows....Pages 369-376 Investigation of Compressible Turbulent Boundary Layer with Large Adverse Pressure Gradient....Pages 377-380 The Critical Phenomena in Separated Flows....Pages 381-384 Nonstationary Disturbance Effect on Flow in Supersonic Separated Zones....Pages 385-388 Peculiarities of Development of Separated and Relaxation Phenomena Behind a Cylinder Flowed About Transversally in a Shear Flow....Pages 389-392 Numerical and Experimental Simulation of Separated Flows....Pages 393-396 Influence of Flow Separation on Transonic Instability....Pages 397-401 Numerical Simulation of Separated Unsteady Flows of Viscous Compressible Gas....Pages 403-410 An Experimental Study of Separated Flows in Transonic Blade Cascades....Pages 411-415 Longitudinal Vortices and Heat Transfer in Reattached Shear Layer....Pages 417-420 Forming of Flow Recirculation Regions on Convex-Concave Surfaces....Pages 421-424 Supersonic Pulsating Flow in Separated Zone of Spike-Tipped Cylinder....Pages 425-428 Comparative Study of Control Techniques for Two-Dimensional Low-Speed Turbulent Flow Separation....Pages 429-474 A Study of the Interaction of Separated Vortices in Transonic and Supersonic Flow on Improving the Aerodynamic Characteristics of Vortex-Flap....Pages 475-483 Supersonic Turbulent Separated Flows of Three Types on a Porous Surface Under Air Injection Conditions....Pages 485-492 The Flow Separation from a Duct Wall Caused by the Near-Wall Counterjet....Pages 493-501 Wave Models for Unsteady Separation and Jets....Pages 503-512 Axisymmetrical Separated Zone Control in Supersonic Flows....Pages 513-516 Using of Supersonic Flow Separation on Cylinders with Nose Needles to Decrease Their Drag....Pages 517-520 Control of Separated Laminar Boundary Layers on Surfaces with a Concave Section....Pages 521-524 Separated Flow Reattachment at an Airfoil Under Sonic Effect....Pages 525-528 Regimes of Separated Flows in Finite-Width Cavities and Methods of Their Control....Pages 529-532 A Jet-Turbulent “Pseudo-Shock” Model....Pages 533-536 Research on Laminar Separation Bubbles at Delft University of Technology....Pages 537-556 On the Instability of Wall-Boundary Layers Close to Separation....Pages 557-564 Effects of Laminar-Turbulent Transition in Separation Bubbles....Pages 565-572 Experimental Studies of the Reattachment of Separated Shear Layers....Pages 573-588 Effect of Heat Transfer on the Stability of Separated Subsonic Flows Down-Stream of Smooth Humps and Backward-Facing Steps....Pages 589-616 Numerical Simulations of Two-Dimensional Temporal and Spatial free Shear Layers: a Comparison....Pages 617-628 Three-Dimensional Evolution of Axisymmetric Jets: a Comparison Between Computations and Experiments....Pages 629-646 Control of a Turbulent Leading-Edge Separation Bubble....Pages 647-656 Self-Induced Roll-Oscillations on Lifting Systems with Flow Separation on High Angles of Attack....Pages 657-664 Small Eddies in Large Vortices....Pages 665-670 Hydrodynamic Visualization of Separated Flows and Jets....Pages 671-680 A Numerical and Experimental Study of the Starting Flow of a Uniformly Accelerated Circular Cylinder....Pages 681-689 Experimental and Theoretical Investigation of Vortex Formation in the Wake of a Flat Plate for Subsonic and Supersonic Free-Stream Mach Number....Pages 691-708 The Instantaneous Structure of a Turbulent Flow over a Back-Ward-Facing Step....Pages 709-717 Influence of Acoustic Disturbances on the Separation Flow Characteristics Behind Two Semi-Infinite Circular Cylinders....Pages 719-722 Asymtotic Analysis of the Development of Görtler Vortices in a Fluid Boundary Layer Near a Concave Surface....Pages 723-728 Separation-Transition Effects on a Cylinder with a Screen....Pages 729-732 Features of the Unsteady Separated Flow Behind Flat Plates after a Shock Wave Excitation....Pages 733-736 The Development of 3-D Separated Flows and Their Influence on the Stability and Laminar-Turbulent Transition....Pages 737-740 Experimental Investigation of Separation and Stability of Supersonic Laminar Boundary Layer....Pages 741-745 Processes of the Instability Development in Separated Flows Behind the Plate....Pages 747-750 Separation of Flow Around a Circular Cylinder at Moderate Re-Numbers....Pages 751-754 Computational Studies on Topological Properties of Vortex Core Lines in Separated Flow Field Around High-Angle-of-Attack Cone-Cylinders....Pages 755-762 Formation of Vortex Structures in a Viscous Incompressible Flow Past an Airfoil....Pages 763-766 The Investigation of the Role of the Coherent Structures in the Development of the Three-Dimensional Jets and Wakes....Pages 767-774 Vortex Interactions in the Transition Region of a Rectangular Jet....Pages 775-784 Two Manners of Becoming Three-Dimensional for Mixing Layers....Pages 785-798 The Simulation of Turbulent Separated Boundary Layers and Wall Jets....Pages 799-806 Mixing of Transverse Jets and Wall Jets in Supersonic Flow....Pages 807-837 Numerical Simulation of Supersonic Free Jet by TVD Schemes....Pages 839-842 Interaction of Plane, Turbulent Jets....Pages 843-846 Parametric Analysis of Acoustic near Field Characteristics of Supersonic High Temperature Jet....Pages 847-850 Afterbody Effects Study on Energia Reusable Launcher Models. Selection of Jet Propulsive Masses Parameters Within Jet Streams Ejecting Model....Pages 851-854 Tangential Stress on a Cylinder Surface Impinged by a Underexpanded Low Density Jet....Pages 855-858 MHD-Jets: Collapse and Dynamo....Pages 859-862 An Experimental Investigation in a Water Channel for the Vectoring Rectangular Jet Flows....Pages 863-867 The Impingement of a Supersonic Jet upon the Surface....Pages 869-874 Self-Oscillations and Acoustic Radiation at Discrete Frequency of Unbalanced Jet....Pages 875-878 Some Behaviours of Coherent Structures Under Controlled Excitation in Coaxial Jet of Mean Velocity Ratio of 0.3....Pages 879-882 An Autooscillating Regime of Supersonic Jet Interaction with a Cavity....Pages 883-886 A High-Resolution, Adaptive-Grid Finite Difference Algorithm for Simulating Supersonic Jet/External Flow Interactions....Pages 887-890 Appearance of the Back Flow in the Non-Selfsimilar Swirling Jet....Pages 891-893 Three-Dimensional Structures of the Flow in Supersonic Underexpended Jet....Pages 895-898