
Large Eddy Simulation for Incompressible Flows
by Sagaut, Pierre; Meneveau, Charles-
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Summary
Table of Contents
Introduction | p. 1 |
Computational Fluid Dynamics | p. 1 |
Levels of Approximation: General | p. 2 |
Statement of the Scale Separation Problem | p. 3 |
Usual Levels of Approximation | p. 4 |
Large-Eddy Simulation | p. 8 |
Formal Introduction to Scale Separation: Band-Pass Filtering | p. 11 |
Definition and Properties of the Filter in the Homogeneous Case | p. 11 |
Definition | p. 11 |
Fundamental Properties | p. 13 |
Characterization of Different Approximations | p. 14 |
Differential Filters | p. 16 |
Three Classical Filters for Large-Eddy Simulation | p. 17 |
Differential Interpretation of the Filters | p. 22 |
Spatial Filtering: Extension to the Inhomogeneous Case | p. 27 |
General | p. 27 |
Non-uniform Filtering Over an Arbitrary Domain | p. 28 |
Time Filtering: A Few Properties | p. 38 |
Application to Navier-Stokes Equations | p. 39 |
Navier-Stokes Equations | p. 40 |
Formulation in Physical Space | p. 40 |
Formulation in General Coordinates | p. 40 |
Formulation in Spectral Space | p. 41 |
Filtered Navier-Stokes Equations in Cartesian Coordinates (Homogeneous Case) | p. 42 |
Formulation in Physical Space | p. 42 |
Formulation in Spectral Space | p. 43 |
Decomposition of the Non-linear Term. Associated Equations for the Conventional Approach | p. 43 |
Leonard's Decomposition | p. 43 |
Germano Consistent Decomposition | p. 54 |
Germano Identity | p. 56 |
Invariance Properties | p. 59 |
Realizability Conditions | p. 64 |
Extension to the Inhomogeneous Case for the Conventional Approach | p. 66 |
Second-Order Commuting Filter | p. 67 |
High-Order Commuting Filters | p. 68 |
Filtered Navier-Stokes Equations in General Coordinates | p. 69 |
Basic Form of the Filtered Equations | p. 69 |
Simplified Form of the Equations - Non-linear Terms Decomposition | p. 69 |
Closure Problem | p. 70 |
Statement of the Problem | p. 70 |
Postulates | p. 71 |
Functional and Structural Modeling | p. 72 |
Functional Modeling (Isotropic Case) | p. 75 |
Phenomenology of Inter-Scale Interactions | p. 75 |
Local Isotropy Assumption: Consequences | p. 76 |
Interactions Between Resolved and Subgrid Scales | p. 77 |
A View in Physical Space | p. 86 |
Summary | p. 88 |
Basic Functional Modeling Hypothesis | p. 88 |
Modeling of the Forward Energy Cascade Process | p. 89 |
Spectral Models | p. 89 |
Physical Space Models | p. 93 |
Improvement of Models in the Physical Space | p. 115 |
Implicit Diffusion: The MILES Concept | p. 140 |
Modeling the Backward Energy Cascade Process | p. 147 |
Preliminary Remarks | p. 147 |
Deterministic Statistical Models | p. 148 |
Stochastic Models | p. 153 |
Functional Modeling: Extension to Anisotropic Cases | p. 163 |
Statement of the Problem | p. 163 |
Application of Anisotropic Filter to Isotropic Flow | p. 163 |
Scalar Models | p. 164 |
Tensorial Models | p. 167 |
Application of an Isotropic Filter to an Anisotropic Flow | p. 168 |
Phenomenology of Inter-Scale Interactions | p. 169 |
Anisotropic Models | p. 174 |
Structural Modeling | p. 183 |
Introduction and Motivations | p. 183 |
Formal Series Expansions | p. 184 |
Models Based on Approximate Deconvolution | p. 184 |
Nonlinear Models | p. 194 |
Homogenization Technique: Perrier and Pironneau Models | p. 199 |
Scale Similarity Hypotheses and Models Using Them | p. 201 |
Scale Similarity Hypotheses | p. 201 |
Scale Similarity Models | p. 203 |
A Bridge Between Scale Similarity and Approximate Deconvolution Models. Generalized Similarity Models | p. 206 |
Mixed Modeling | p. 207 |
Motivations | p. 207 |
Examples of Mixed Models | p. 209 |
Differential Subgrid Stress Models | p. 213 |
Deardorff Model | p. 213 |
Link with the Subgrid Viscosity Models | p. 214 |
Deterministic Models of the Subgrid Structures | p. 215 |
General | p. 215 |
S3/S2 Alignment Model | p. 216 |
S3/¿ Alignment Model | p. 216 |
Kinematic Model | p. 216 |
Explicit Evaluation of Subgrid Scales | p. 217 |
Fractal Interpolation Procedure | p. 219 |
Chaotic Map Model | p. 220 |
Kinematic-Simulation-Based Reconstruction | p. 223 |
Subgrid Scale Estimation Procedure | p. 224 |
Multilevel Simulations | p. 225 |
Direct Identification of Subgrid Terms | p. 233 |
Linear-Stochastic-Estimation-Based Model | p. 234 |
Neural-Network-Based Model | p. 235 |
Implicit Structural Models | p. 236 |
Local Average Method | p. 237 |
Scale Residual Model | p. 238 |
Numerical Solution: Interpretation and Problems | p. 241 |
Dynamic Interpretation of the Large-Eddy Simulation | p. 241 |
Static and Dynamic Interpretations: Effective Filter | p. 241 |
Theoretical Analysis of the Turbulence Generated by Large-Eddy Simulation | p. 243 |
Ties Between the Filter and Computational Grid. Pre-filtering | p. 248 |
Numerical Errors and Subgrid Terms | p. 250 |
Ghosal's General Analysis | p. 250 |
Remarks on the Use of Artificial Dissipations | p. 255 |
Remarks Concerning the Time Integration Method | p. 258 |
Analysis and Validation of Large-Eddy Simulation Data | p. 261 |
Statement of the Problem | p. 261 |
Type of Information Contained in a Large-Eddy Simulation | p. 261 |
Validation Methods | p. 262 |
Statistical Equivalency Classes of Realizations | p. 263 |
Ideal LES and Optimal LES | p. 266 |
Correction Techniques | p. 267 |
Filtering the Reference Data | p. 268 |
Evaluation of Subgrid Scale Contribution | p. 268 |
Practical Experience | p. 269 |
Boundary Conditions | p. 271 |
General Problem | p. 271 |
Mathematical Aspects | p. 271 |
Physical Aspects | p. 272 |
Solid Walls | p. 274 |
Statement of the Problem | p. 274 |
A Few Wall Models | p. 281 |
Case of the Inflow Conditions | p. 297 |
Required Conditions | p. 297 |
Inflow Condition Generation Techniques | p. 298 |
Coupling Large-Eddy Simulation with Multiresolution/Multidomain Techniques | p. 309 |
Statement of the Problem | p. 309 |
Methods with Full Overlap | p. 311 |
One-Way Coupling Algorithm | p. 312 |
Two-Way Coupling Algorithm | p. 312 |
FAS-like Multilevel Method | p. 313 |
Kravchenko et al. Method | p. 316 |
Methods Without Full Overlap | p. 316 |
Hybrid RANS/LES Approaches | p. 319 |
Motivations and Presentation | p. 319 |
Zonal Decomposition | p. 320 |
Statement of the Problem | p. 320 |
Sharp Transition | p. 321 |
Smooth Transition | p. 323 |
Zonal RANS/LES Approach as Wall Model | p. 324 |
Nonlinear Disturbance Equations | p. 325 |
Universal Modeling | p. 327 |
Germano's Hybrid Model | p. 327 |
Speziale's Rescaling Method and Simplifications | p. 328 |
Arunajatesan's Modified Two-Equation Model | p. 329 |
Bush-Mani Limiters | p. 330 |
Implementation | p. 331 |
Filter Identification. Computing the Cutoff Length | p. 331 |
Explicit Discrete Filters | p. 334 |
Uniform One-Dimensional Grid Case | p. 334 |
Extension to the Multidimensional Case | p. 337 |
Extension to the General Case. Convolution Filters | p. 337 |
High-Order Elliptic Filters | p. 338 |
Implementation of the Structure Function Model | p. 338 |
Examples of Applications | p. 341 |
Homogeneous Turbulence | p. 341 |
Isotropic Homogeneous Turbulence | p. 341 |
Anisotropic Homogeneous Turbulence | p. 342 |
Flows Possessing a Direction of Inhomogeneity | p. 344 |
Time-Evolving Plane Channel | p. 344 |
Other Flows | p. 348 |
Flows Having at Most One Direction of Homogeneity | p. 348 |
Round Jet | p. 349 |
Backward Facing Step | p. 356 |
Square-Section Cylinder | p. 360 |
Other Examples | p. 361 |
Industrial Applications | p. 362 |
Large-Eddy Simulation for Nuclear Power Plants | p. 362 |
Flow in a Mixed-Flow Pump | p. 362 |
Flow Around a Landing Gear Configuration | p. 367 |
Flow Around a Full Scale Car | p. 368 |
Lessons | p. 370 |
General Lessons | p. 370 |
Subgrid Model Efficiency | p. 371 |
Wall Model Efficiency | p. 374 |
Mesh Generation for "Building Blocks" Flows | p. 375 |
Statistical and Spectral Analysis of Turbulence | p. 379 |
Turbulence Properties | p. 379 |
Foundations of the Statistical Analysis of Turbulence | p. 379 |
Motivations | p. 379 |
Statistical Average: Definition and Properties | p. 380 |
Ergodicity Principle | p. 380 |
Decomposition of a Turbulent Field | p. 382 |
Isotropic Homogeneous Turbulence | p. 383 |
Introduction to Spectral Analysis of the Isotropic Turbulent Fields | p. 383 |
Definitions | p. 383 |
Modal Interactions | p. 385 |
Spectral Equations | p. 386 |
Characteristic Scales of Turbulence | p. 388 |
Spectral Dynamics of Isotropic Homogeneous Turbulence | p. 389 |
Energy Cascade and Local Isotropy | p. 389 |
Equilibrium Spectrum | p. 389 |
EDQNM Modeling | p. 391 |
Isotropic EDQNM Model | p. 391 |
Cambon's Anisotropic EDQNM Model | p. 393 |
Bibliography | p. 397 |
Index | p. 423 |
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