Three-dimensional Separated Flow Topology

• Publisher: Wiley-ISTE
• Year: 2013
• Tongue: English
• Leaves: 161
• Category: Library

✦ Synopsis

This book develops concepts and a methodology for a rational description of the organization of three-dimensional flows considering, in particular, the case where the flow is the place of separations.
The descriptive analysis based on the critical point theory of Poincare develops conventional but rather unfamiliar considerations from aerodynamicists, who face the understanding of complex flows including multiple separation lines and vortices.
These problems concern industrial sectors where aerodynamics plays a key role, such as aerospace, ground vehicles, buildings, etc.

Contents

1. Skin Friction Lines Pattern and Critical Points.
2. Separation Streamsurfaces and Vortex Structures.
3. Separated Flow on a Body.
4. Vortex Wake of Wings and Slender Bodies.
5. Separation Induced by an Obstacle or a Blunt Body.
6. Reconsideration of the Two-Dimensional Separation.
7. Concluding Remarks.

Content:
Chapter 1 Skin Friction Lines Pattern and Critical Points (pages 1–26): Jean Delery
Chapter 2 Separation Streamsurfaces and Vortex Structures (pages 27–46): Jean Delery
Chapter 3 Separated Flow on a Body (pages 47–68): Jean Delery
Chapter 4 Vortex Wake of Wings and Slender Bodies (pages 69–90): Jean Delery
Chapter 5 Separation Induced by an Obstacle or a Blunt Body (pages 91–120): Jean Delery
Chapter 6 Reconsideration of the Two?Dimensional Separation (pages 121–142): Jean Delery
Chapter 7 Concluding Remarks (pages 143–146): Jean Delery

✦ Table of Contents

Three-dimensional Separated Flow Topology......Page 2
Copy Right......Page 3
Table of Contents......Page 4
Introduction......Page 7
1.1. Basic properties of the three-dimensional boundary layer......Page 12
1.2. Skin friction lines and surface flow pattern......Page 16
1.3.1. General solution and the eigenvalue problem......Page 19
1.3.2. The different critical points......Page 25
1.4. Critical points of the wall vorticity lines......Page 35
2.1. Generalization to the flow field and three dimensional critical points......Page 37
2.2. Separation and attachment lines......Page 42
2.3. Streamsurfaces of separation and attachment......Page 46
2.4. Vortical structures......Page 50
2.5. Some properties of a vortical structure......Page 52
3.1. Basic rules and definitions......Page 57
3.2. General definition: the basic separated structures......Page 59
3.3. Field associated with a separation with one saddle point and three nodes: the horseshoe vortex......Page 66
3.4. Field associated with a separation with one saddle point and two foci: the tornado-like vortex......Page 72
4.1. Vortical structures over a delta wing......Page 78
4.2. Vortical flow over a slender body......Page 86
4.3.1. Topological description......Page 91
4.3.2. A scenario for the origin of vortices on a wing......Page 97
5.1. Separation in front of an obstacle......Page 99
5.2. Flow induced by an obstacle of finite height or protuberance......Page 105
5.3. Separation on a non-propelled afterbody......Page 111
5.4.1. The surface flow pattern......Page 118
5.4.2. Separation surfaces......Page 124
6.1. Some definitions: a reminder......Page 128
6.3. Special critical points......Page 130
6.4. Three-dimensional structure of a two-dimensional separated flow......Page 138
6.5. Axisymmetric afterbody......Page 143
7 Concluding Remarks......Page 149
Bibliography......Page 153
List of Symbols......Page 157
Index......Page 159