Ebook: Laminar-Turbulent Transition: IUTAM Symposium, Sendai/Japan, September 5 – 9, 1994

The International Union of Theoretical and Applied Mechanics (IUTAM) decided in 1992 to sponsor the fourth Symposium on Laminar-Turbulent Transition, Sendai/Japan, 1994. The objectives of the present Symposium were to deepen the fundamental knowledge of stability and laminar­ turbulent transition in three-dimensional and compressible flows and to contribute to recent developing technologies in the field. This Symposium followed the three previous IUTAM-Symposia (Stuttgart 1979, Novosibirsk 1984 and Toulouse 1989). The Scientific Committee selected two keynote lectures and 62 technical papers. The Symposium was held on the 5th to 9th of September, 1994, at the Sendai International Center in Sendai. The participants were 82 scientists from 10 countries. The keynote lectures have critically reviewed recent development of researches concerning the laminar-to-turbulent transition phenomena from the fundamental and the application aspects. Many papers presented were concerned about the detailed mechanism of the boundary layer transition (receptivity, secondary instability, turbulent spot and bypass transition). Particular emphasis was further placed on the transition of three-dimensional boundary layers on rotation systems and on swept wings. Attention was also given to compressible hypersonic flows.

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The origin 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 mechanics, there are numerous applications for information regarding transition location and details of the subsequent turbulent flow.
This volume contains two review papers and 60 technical papers presented by internationally recognised authorities covering new developments of transition research on three-dimensional and compressible boundary layers, receptivity, crossflow instability, turbulent spot and transition control.

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The origin 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 mechanics, there are numerous applications for information regarding transition location and details of the subsequent turbulent flow.
This volume contains two review papers and 60 technical papers presented by internationally recognised authorities covering new developments of transition research on three-dimensional and compressible boundary layers, receptivity, crossflow instability, turbulent spot and transition control.
Content:
Front Matter....Pages I-XXVII
Front Matter....Pages 1-1
A Survey of the Transition Prediction Methods: from Analytical Criteria to PSE and DNS....Pages 3-14
Some Fundamental Problems on Transition to Wall Turbulence....Pages 15-26
Front Matter....Pages 27-27
Is the Classic Weakly Nonlinear Theory of Hydrodynamic Stability Good Enough and How It Can Be Improved....Pages 29-35
Role of Non-Wave-Like Disturbances in Transition....Pages 37-44
Interaction of Phase-Locked Modes: A New Mechanism for the Rapid Growth of Three-Dimensional Disturbances....Pages 45-52
Stability of Two- and Three-Dimensional Time-Dependent Flows with Locally Uniform Strain Rates....Pages 53-58
Front Matter....Pages 59-59
The Incompressible Attachment-Line Boundary-Layer Stability....Pages 61-68
Secondary Instability Associated with Streamwise Vortices in a Rotating Boundary Layer....Pages 69-76
Laminar-Turbulent Transition in Spherical Couette Flow....Pages 77-84
Nonlinear PSE Compared with DNS and Experiment....Pages 85-92
Front Matter....Pages 93-93
Fine Structure of the 3-Dimensional Transition Region in the Wake behind a Thin-Shell Cylinder Placed Parallel to a Uniform Flow....Pages 95-102
Transition to Turbulence in Pipe Flow....Pages 103-110
Subcritical Disturbance Growth Caused by Hairpin Eddies....Pages 111-118
Front Matter....Pages 119-119
In-FIight Measurements on a Laminar Wing Glove by Means of Surface Sensor Arrays....Pages 121-128
Laminarization of Three-Dimensional Compressible Boundary-Layer Flow Using Receptivity Control....Pages 129-136
Relaminarisation of the Swept Wing Attachment-Line by Surface Suction....Pages 137-144
Front Matter....Pages 145-145
Nonlocal and Local Instability Analysis of Hypersonic Flows....Pages 147-154
An Exploratory Study of Transition on a Slender Cone in Hypervelocity Flow....Pages 155-162
Front Matter....Pages 163-163
Turbulence in Pulsatile Flow through the Tube with Elastic Wall....Pages 165-172
Experimental Study of Boundary Layer Suction Effects on Leading Edge Contamination along the Attachment Line of a Swept Wing....Pages 173-180
Front Matter....Pages 163-163
Nonlinear Development of Waves in the Supersonic Boundary Layer....Pages 181-188
Analysis of the Formation of a Turbulent Spot in a Laminar Boundary Layer....Pages 189-196
Entropy- and Boundary Layer Instability of Hypersonic Cone Flows-Effects of Mean Flow Variations....Pages 197-204
Mathematical Nature of Parabolized Stability Equations....Pages 205-212
High-Speed Boundary-Layer Stability and Transition....Pages 213-220
“Vortex Dynamics“ of a Vortex Ring Introduced into a Laminar Boundary Layer....Pages 221-228
Experiments on Secondary Instability of Channel Flow with Body Forces....Pages 229-236
Numerical Simulation of Boundary Layer Flow over Suction Holes....Pages 237-244
Numerical Simulation on Laminar-Turbulent Transition of the Channel Flow with Simulated Wall Roughness....Pages 245-252
Front Matter....Pages 253-253
The Development of a Turbulent Spot in an Adverse Pressure Gradient Boundary Layer....Pages 255-262
Spatial Simulations of Bypass Transition in Boundary Layers....Pages 263-270
The Natural Evolution of Turbulent Spots in a Flat Plate Laminar Boundary Layer....Pages 271-278
Turbulent Spot in 3-D Constant Pressure Flow....Pages 279-286
Front Matter....Pages 287-287
Experimental Study of Secondary Instability and Breakdown in a Swept Wing Boundary Layer....Pages 289-295
Development of Stationary Crossflow Vortices on a Swept Wing....Pages 297-304
Front Matter....Pages 305-305
An Experiment on Transition of Three-Dimensional Boundary Layer....Pages 307-314
Instabilities Developing in the Three-Dimensional Boundary Layer on Concave and Convex Curved Surfaces....Pages 315-322
Effects of Wall and Streamline Curvatures on Instability of 3-D Boundary Layers....Pages 323-330
Front Matter....Pages 331-331
Stability of Two-Phase Boundary Layer on a Flat Plate....Pages 333-340
On the Receptivity of a Flat Plate Boundary Layer to Localized Free Stream Disturbances....Pages 341-348
Front Matter....Pages 331-331
Comparison of Asymptotic Prediction Methods for Boundary-Layer Receptivity....Pages 349-356
On Excitation of Unstable Boundary Layer Waves by Freestream Sound....Pages 357-364
The Resonant-Triad Interaction in Boundary-Layer Transition....Pages 365-372
Experimental Study of Cross-Flow Instability of a Swept-Wing Boundary Layer with Respect to Traveling Waves....Pages 373-380
Stability Characteristics of 3-D Boundary Layer on a Yawed Cone....Pages 381-388
Absolute Instability of the Rotating-Disk Boundary Layer....Pages 389-396
Spatial Direct Numerical Simulation of Transition in a Three-Dimensional Boundary Layer....Pages 397-404
Numerical and Experimental Investigation of the K-Regime of Boundary-Layer Transition....Pages 405-412
Effect of Leading Edge on Sound Receptivity....Pages 413-420
On Similarity Law of the Crossflow Instability in Three-Dimensional Boundary Layers on Yawed Cylinders....Pages 421-428
Numerical and Experimental Investigation of Secondary Instability in Leading Edge Boundary Layer Flow....Pages 429-435
Comparison between the Orr-Sommerfeld and Asymptotic Theories for the Flat-Plate Boundary Layer....Pages 437-444
Front Matter....Pages 445-445
Analysis of the Instability of the Boundary Layer over a Rotating Disk....Pages 447-454
Randomization Process in Crossflow Instability Dominant Three-Dimensional Boundary-Layer Transitions....Pages 455-462
Front Matter....Pages 463-463
Experiments on Nonlinear Interaction between Oblique Tollmien-Schlichting Waves....Pages 465-472
Three-Dimensional Instability of the Blasius Boundary Layer....Pages 473-480
Direct Numerical Simulation of Boundary-Layer Transition with Strong Adverse Pressure Gradient....Pages 481-488
Front Matter....Pages 489-489
A Partial Simulation of Receptivity and Transition in 3-D Boundary Layers....Pages 491-498
Distributed Excitation of Cross-Flow Vortices in Three-Dimensional Boundary Layers....Pages 499-506
The Receptivity of Flat-Plate Boundary-Layers with Two-Dimensional Roughness Elements to Freestream Sound and Its Control....Pages 507-514
Front Matter....Pages 515-515
Laminar Boundary-Layer, Sound Receptivity and Control....Pages 517-524
On 3-D Boundary Layer Receptivity....Pages 525-532

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The origin 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 mechanics, there are numerous applications for information regarding transition location and details of the subsequent turbulent flow.
This volume contains two review papers and 60 technical papers presented by internationally recognised authorities covering new developments of transition research on three-dimensional and compressible boundary layers, receptivity, crossflow instability, turbulent spot and transition control.
Content:
Front Matter....Pages I-XXVII
Front Matter....Pages 1-1
A Survey of the Transition Prediction Methods: from Analytical Criteria to PSE and DNS....Pages 3-14
Some Fundamental Problems on Transition to Wall Turbulence....Pages 15-26
Front Matter....Pages 27-27
Is the Classic Weakly Nonlinear Theory of Hydrodynamic Stability Good Enough and How It Can Be Improved....Pages 29-35
Role of Non-Wave-Like Disturbances in Transition....Pages 37-44
Interaction of Phase-Locked Modes: A New Mechanism for the Rapid Growth of Three-Dimensional Disturbances....Pages 45-52
Stability of Two- and Three-Dimensional Time-Dependent Flows with Locally Uniform Strain Rates....Pages 53-58
Front Matter....Pages 59-59
The Incompressible Attachment-Line Boundary-Layer Stability....Pages 61-68
Secondary Instability Associated with Streamwise Vortices in a Rotating Boundary Layer....Pages 69-76
Laminar-Turbulent Transition in Spherical Couette Flow....Pages 77-84
Nonlinear PSE Compared with DNS and Experiment....Pages 85-92
Front Matter....Pages 93-93
Fine Structure of the 3-Dimensional Transition Region in the Wake behind a Thin-Shell Cylinder Placed Parallel to a Uniform Flow....Pages 95-102
Transition to Turbulence in Pipe Flow....Pages 103-110
Subcritical Disturbance Growth Caused by Hairpin Eddies....Pages 111-118
Front Matter....Pages 119-119
In-FIight Measurements on a Laminar Wing Glove by Means of Surface Sensor Arrays....Pages 121-128
Laminarization of Three-Dimensional Compressible Boundary-Layer Flow Using Receptivity Control....Pages 129-136
Relaminarisation of the Swept Wing Attachment-Line by Surface Suction....Pages 137-144
Front Matter....Pages 145-145
Nonlocal and Local Instability Analysis of Hypersonic Flows....Pages 147-154
An Exploratory Study of Transition on a Slender Cone in Hypervelocity Flow....Pages 155-162
Front Matter....Pages 163-163
Turbulence in Pulsatile Flow through the Tube with Elastic Wall....Pages 165-172
Experimental Study of Boundary Layer Suction Effects on Leading Edge Contamination along the Attachment Line of a Swept Wing....Pages 173-180
Front Matter....Pages 163-163
Nonlinear Development of Waves in the Supersonic Boundary Layer....Pages 181-188
Analysis of the Formation of a Turbulent Spot in a Laminar Boundary Layer....Pages 189-196
Entropy- and Boundary Layer Instability of Hypersonic Cone Flows-Effects of Mean Flow Variations....Pages 197-204
Mathematical Nature of Parabolized Stability Equations....Pages 205-212
High-Speed Boundary-Layer Stability and Transition....Pages 213-220
“Vortex Dynamics“ of a Vortex Ring Introduced into a Laminar Boundary Layer....Pages 221-228
Experiments on Secondary Instability of Channel Flow with Body Forces....Pages 229-236
Numerical Simulation of Boundary Layer Flow over Suction Holes....Pages 237-244
Numerical Simulation on Laminar-Turbulent Transition of the Channel Flow with Simulated Wall Roughness....Pages 245-252
Front Matter....Pages 253-253
The Development of a Turbulent Spot in an Adverse Pressure Gradient Boundary Layer....Pages 255-262
Spatial Simulations of Bypass Transition in Boundary Layers....Pages 263-270
The Natural Evolution of Turbulent Spots in a Flat Plate Laminar Boundary Layer....Pages 271-278
Turbulent Spot in 3-D Constant Pressure Flow....Pages 279-286
Front Matter....Pages 287-287
Experimental Study of Secondary Instability and Breakdown in a Swept Wing Boundary Layer....Pages 289-295
Development of Stationary Crossflow Vortices on a Swept Wing....Pages 297-304
Front Matter....Pages 305-305
An Experiment on Transition of Three-Dimensional Boundary Layer....Pages 307-314
Instabilities Developing in the Three-Dimensional Boundary Layer on Concave and Convex Curved Surfaces....Pages 315-322
Effects of Wall and Streamline Curvatures on Instability of 3-D Boundary Layers....Pages 323-330
Front Matter....Pages 331-331
Stability of Two-Phase Boundary Layer on a Flat Plate....Pages 333-340
On the Receptivity of a Flat Plate Boundary Layer to Localized Free Stream Disturbances....Pages 341-348
Front Matter....Pages 331-331
Comparison of Asymptotic Prediction Methods for Boundary-Layer Receptivity....Pages 349-356
On Excitation of Unstable Boundary Layer Waves by Freestream Sound....Pages 357-364
The Resonant-Triad Interaction in Boundary-Layer Transition....Pages 365-372
Experimental Study of Cross-Flow Instability of a Swept-Wing Boundary Layer with Respect to Traveling Waves....Pages 373-380
Stability Characteristics of 3-D Boundary Layer on a Yawed Cone....Pages 381-388
Absolute Instability of the Rotating-Disk Boundary Layer....Pages 389-396
Spatial Direct Numerical Simulation of Transition in a Three-Dimensional Boundary Layer....Pages 397-404
Numerical and Experimental Investigation of the K-Regime of Boundary-Layer Transition....Pages 405-412
Effect of Leading Edge on Sound Receptivity....Pages 413-420
On Similarity Law of the Crossflow Instability in Three-Dimensional Boundary Layers on Yawed Cylinders....Pages 421-428
Numerical and Experimental Investigation of Secondary Instability in Leading Edge Boundary Layer Flow....Pages 429-435
Comparison between the Orr-Sommerfeld and Asymptotic Theories for the Flat-Plate Boundary Layer....Pages 437-444
Front Matter....Pages 445-445
Analysis of the Instability of the Boundary Layer over a Rotating Disk....Pages 447-454
Randomization Process in Crossflow Instability Dominant Three-Dimensional Boundary-Layer Transitions....Pages 455-462
Front Matter....Pages 463-463
Experiments on Nonlinear Interaction between Oblique Tollmien-Schlichting Waves....Pages 465-472
Three-Dimensional Instability of the Blasius Boundary Layer....Pages 473-480
Direct Numerical Simulation of Boundary-Layer Transition with Strong Adverse Pressure Gradient....Pages 481-488
Front Matter....Pages 489-489
A Partial Simulation of Receptivity and Transition in 3-D Boundary Layers....Pages 491-498
Distributed Excitation of Cross-Flow Vortices in Three-Dimensional Boundary Layers....Pages 499-506
The Receptivity of Flat-Plate Boundary-Layers with Two-Dimensional Roughness Elements to Freestream Sound and Its Control....Pages 507-514
Front Matter....Pages 515-515
Laminar Boundary-Layer, Sound Receptivity and Control....Pages 517-524
On 3-D Boundary Layer Receptivity....Pages 525-532
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