2 Computational dynamical systems for turbulence
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Bernard J. Geurts
Abstract
The intricate structure of turbulent flow is presented from the physical as well as from the spectral space point of view and illustrated with a number of examples. Computational representations of turbulence involve numerical and physical modeling. The computational dynamical systems that result from the large-eddy modeling are interpreted using concepts from nonlinear systems theory. Finally, three geometrically simple, ‘canonical’ flows are introduced; homogeneous turbulence, turbulent mixing and wall-bounded flow. These will provide recurring illustrations of various aspects of direct and large-eddy simulation throughout this book.
Abstract
The intricate structure of turbulent flow is presented from the physical as well as from the spectral space point of view and illustrated with a number of examples. Computational representations of turbulence involve numerical and physical modeling. The computational dynamical systems that result from the large-eddy modeling are interpreted using concepts from nonlinear systems theory. Finally, three geometrically simple, ‘canonical’ flows are introduced; homogeneous turbulence, turbulent mixing and wall-bounded flow. These will provide recurring illustrations of various aspects of direct and large-eddy simulation throughout this book.
Kapitel in diesem Buch
- Frontmatter I
- Preface VII
- Contents IX
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Part I: Phenomenology of turbulent flow
- 1 Direct and large-eddy simulation: context and introduction 1
- 2 Computational dynamical systems for turbulence 38
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Part II: Numerical aspects of DNS and LES
- 3 Features of a basic numerical approach 65
- 4 Time-integration 87
- 5 Spatial discretization 110
-
Part III: Subgrid modeling
- 6 Filtering and rigorous subgrid modeling 165
- 7 Subgrid models 200
-
Part IV: Validation and error-assessment
- 8 Validation of large-eddy simulation 235
- 9 Interacting error dynamics 258
- 10 Epilogue 289
- Bibliography 295
- Index 305
Kapitel in diesem Buch
- Frontmatter I
- Preface VII
- Contents IX
-
Part I: Phenomenology of turbulent flow
- 1 Direct and large-eddy simulation: context and introduction 1
- 2 Computational dynamical systems for turbulence 38
-
Part II: Numerical aspects of DNS and LES
- 3 Features of a basic numerical approach 65
- 4 Time-integration 87
- 5 Spatial discretization 110
-
Part III: Subgrid modeling
- 6 Filtering and rigorous subgrid modeling 165
- 7 Subgrid models 200
-
Part IV: Validation and error-assessment
- 8 Validation of large-eddy simulation 235
- 9 Interacting error dynamics 258
- 10 Epilogue 289
- Bibliography 295
- Index 305