Kassinos / Langer / Iaccarino Complex Effects in Large Eddy Simulations

1. Auflage 2007
ISBN: 978-3-540-34234-2
Verlag: Springer-Verlag
Format: PDF
Kopierschutz: Adobe DRM (»Systemvoraussetzungen)

E-Book, Englisch, 446 Seiten

This volume contains a collection of expert views on the state of the art in Large Eddy Simulation (LES) and its application to complex ?ows. Much of the material in this volume was inspired by contributions that were originally presented at the symposium on Complex E?ects in Large Eddy Simulation held in Lemesos (Limassol), Cyprus, between September 21st and 24th, 2005. The symposium was organized by the University of Cyprus together with the Center for Turbulence Research at Stanford University and NASA Ames Research Center. Many of the problems that must be tackled in order to advance techn- ogy and science increasingly require synergetic approaches across disciplines. Computational Science refers to interdisciplinary research aiming at the so- tion of complex scienti?c and engineering problems under the unifying theme of computation. The explosive growth of computer power over the last few decades, and the advancement of computational methods, have enabled the applicationofcomputationalapproachestoanever-increasingsetofproblems. One of the most challenging problems to treat computationally in the discipline of Computational Fluid Dynamics is that of turbulent ?uid ?ow.

Autoren/Hrsg.

Kassinos, Stavros

Langer, Carlos

Iaccarino, Gianluca

Moin, Parviz

Inhaltsverzeichnis

1;Preface;6
2;Contents;8
3;Complex Effects in Large Eddy Simulations;11
3.1;1 Introduction;11
3.2;2 Numerical Methods;13
3.3;3 Wall Modeling;13
3.4;4 Two-Phase Flows;15
3.5;5 Integration;17
3.6;6 Novel Applications of LES;19
3.7;7 Conclusions;21
3.8;Acknowledgments;23
3.9;References;23
4;On the Relation between Subgrid-Scale Modeling and Numerical Discretization in Large- Eddy Simulation;25
4.1;1 Introduction;25
4.2;2 The ALDM Approach;28
4.3;3 Isotropic Turbulence;30
4.4;4 Plane-Channel Flow with Periodic Constrictions;32
4.5;5 Conclusions;34
4.6;Acknowledgments;35
4.7;References;35
5;Space-Time Error Representation and Estimation in Navier- Stokes Calculations;38
5.1;1 Introduction;38
5.2;2 Error Estimation of Functionals;42
5.3;3 Computable Error Estimates and Adaptivity;46
5.4;4 Extension to the Time-Dependent Navier-Stokes Equations;50
5.5;5 Concluding Remarks;55
5.6;References;55
6;Multiresolution Particle Methods;58
6.1;1 Introduction;58
6.2;2 Approximations using Particles;60
6.3;3 Solving Transport Problems with Particle Methods;61
6.4;4 Adaptive Particle Methods;63
6.5;5 Conclusions;68
6.6;References;69
7;LES Computation of Lagrangian Statistics in Homogeneous Stationary Turbulence; Application of Universalities under Scaling Symmetry at Sub- Grid Scales;71
7.1;1 Introduction;71
7.2;2 Universalities of Fragmentation under the Scaling Symmetry and Turbulent Cascade with Intermittency;73
7.3;3 Computational Model;74
7.4;4 Numerical Results and Discussion;76
7.5;5 Conclusions;79
7.6;References;81
8;Anisotropic Subgrid-Scale Modelling: Comparison of LES with High Resolution DNS and Statistical Theory for Rapidly Rotating Turbulence;84
8.1;1 Introduction;84
8.2;2 Description of the Subgrid Scale Model;85
8.3;3 Results;87
8.4;4 Discussion and Perspectives;92
8.5;References;95
9;On the Investigation of a Dynamic Nonlinear Subgrid- Scale Model;96
9.1;1 Introduction;96
9.2;2 Numerical Procedure;97
9.3;3 Results;99
9.4;4 Conclusion and Discussion;104
9.5;References;104
10;Three Problems in the Large–Eddy Simulation of Complex Turbulent Flows;105
10.1;1 An Algorithm for Large–Eddy Simulation of Compressible Turbulent Flows;105
10.2;2 RDT Applied to the Near–Wall Modeling Problem;110
10.3;3 Passive Scalar Mixing;116
10.4;Acknowledgments;120
10.5;References;120
11;Filtering the Wall as a Solution to the Wall- Modeling Problem;122
11.1;1 Introduction;122
11.2;2 Filtered Wall Formulation;123
11.3;3 Optimal Large Eddy Simulation;126
11.4;4 Filtered-Wall LES Results;127
11.5;5 Discussion;128
11.6;Acknowledgments;130
11.7;References;130
12;ANear- Wall Eddy- Viscosity Formulation for LES;132
12.1;1 Introduction;132
12.2;2 Near-Wall Treatment;133
12.3;3 Numerical Results;134
12.4;4 Application to Very High Reynolds Numbers;141
12.5;5 Conclusions;144
12.6;References;144
13;Investigation of Multiscale Subgrid Models for LES of Instabilities and Turbulence in Wake Vortex Systems;146
13.1;1 Introduction;146
13.2;2 Numerical Method;147
13.3;3 Simulation Results;152
13.4;4 Conclusions;158
13.5;Acknowledgments;160
13.6;References;160
14;Numerical Determination of the Scaling Exponent of the Modeled Subgrid Stresses for Eddy Viscosity Models;165
14.1;1 Introduction;165
14.2;2 Numerical Technique and Configuration;166
14.3;3 Evaluation of Modeling and Numerical Error;168
14.4;4 Results;169
14.5;5 Conclusions;173
14.6;References;174
15;A Posteriori Study on Modelling and Numerical Error in LES Applying the Smagorinsky Model;177
15.1;1 Introduction;177
15.2;2 Applied Modelling and Grid-Independent LES;178
15.3;3 Applied Numerical Methods and Grid Resolutions;181
15.4;4 Effect of Varying Grid Resolution on Numerical and Modelling Error;182
15.5;5 Effect of Varying Filter Width on Numerical and Modelling Error;185
15.6;6 Conclusions;190
15.7;Acknowledgments;193
15.8;References;193
16;Passive Scalar and Dissipation Simulations with the Linear Eddy Model;194
16.1;1 Introduction;194
16.2;2 Model Formulation;195
16.3;3 Results and Discussion;197
16.4;4 Conclusions;204
16.5;References;204
17;Lattice-Boltzmann LES of Vortex Shedding in the Wake of a Square Cylinder;206
17.1;1 Lattice-Boltzmann Method for Turbulent Flows;206
17.2;2 Square Cylinder Test Case;210
17.3;3 Square Cylinder Results;211
17.4;4 Computational Assessment of the Open Boundary Conditions;212
17.5;5 LBE-LES Stability;217
17.6;6 Conclusions;218
17.7;References;219
18;LES on Cartesian Grids with Anisotropic Refinement;221
18.1;1 Introduction;221
18.2;2 The Unstructured Solver: CDP;223
18.3;3 Grid Generation and Smoothing;225
18.4;4 Immersed Boundary Reconstruction;228
18.5;5 Turbulent Channel Flow;231
18.6;6 Sphere Calculations;232
18.7;7 Conclusions;233
18.8;Acknowledgments;234
18.9;References;234
19;Towards Time-Stable and Accurate LES on Unstructured Grids;236
19.1;1 Introduction;236
19.2;2 Consistency, Stability, & Accuracy;237
19.3;3 Unstructured Finite Volume Method;241
19.4;4 Numerical Results;244
19.5;5 Conclusions;248
19.6;References;249
20;A Low-Numerical Dissipation, Patch-Based Adaptive- Mesh- Refinement Method for Large- Eddy Simulation of Compressible Flows;251
20.1;1 Introduction;251
20.2;2 Numerical Method;252
20.3;3 Verification;255
20.4;4 Comparison with Experiments;257
20.5;5 Conclusions;260
20.6;Acknowledgments;261
20.7;References;261
21;Large-Eddy Simulation of Richtmyer-Meshkov Instability;263
21.1;1 Introduction;263
21.2;2 LES: Numerical Method and SGS Model;264
21.3;3 Initial and Boundary Conditions;265
21.4;4 Results;266
21.5;5 Concluding Remarks;269
21.6;Acknowledgments;270
21.7;References;270
22;LES of Variable Density Bifurcating Jets;272
22.1;1 Introduction;272
22.2;2 Governing Equations;274
22.3;3 Numerical Algorithm;275
22.4;4 Boundary Conditions;277
22.5;5 Results;278
22.6;6 Conclusions;285
22.7;Acknowledgments;285
22.8;References;285
23;Large-Eddy Simulation of a Turbulent Flow around a Multi- Perforated Plate;288
23.1;1 Introduction;288
23.2;2 Computational Methodology;290
23.3;3 Details of Numerical Simulations;293
23.4;4 Results and Discussion;293
23.5;5 Conclusions;300
23.6;Acknowledgments;300
23.7;References;301
24;Simulation of Separation from Curved Surfaces with Combined LES and RANS Schemes;303
24.1;1 Introduction;303
24.2;2 Outline of Methods;306
24.3;3 The Computational LES Framework;307
24.4;4 Application;308
24.5;5 Conclusions;320
24.6;Acknowledgments;321
24.7;References;321
25;Highly Parallel Large Eddy Simulations of Multiburner Configurations in Industrial Gas Turbines;323
25.1;1 Introduction;323
25.2;2 Target Configuration and LES Models;324
25.3;3 Computational Issues;324
25.4;4 Results and Discussion;326
25.5;5 Acoustic Description;331
25.6;6 Conclusions;332
25.7;Acknowledgments;333
25.8;References;333
26;Response of a Swirled Non-Premixed Burner to Fuel Flow Rate Modulation;335
26.1;1 Introduction;335
26.2;2 Numerical Approach;337
26.3;3 Computed Configuration;337
26.4;4 Non-Pulsated Cold & Reacting Cases;339
26.5;5 Pulsated Reacting Cases;341
26.6;6 Conclusion;346
26.7;Acknowledgments;346
26.8;References;347
27;Investigation of Subgrid Scale Wrinkling Models and Their Impact on the Artificially Thickened Flame Model in Large Eddy Simulations;350
27.1;1 Introduction;350
27.2;2 Modeling and Governing Equations;352
27.3;3 Oracles Configuration;354
27.4;4 Numerical Technique;356
27.5;5 Results and Discussion;357
27.6;6 Conclusions;363
27.7;Acknowledgments;363
27.8;References;364
28;Analysis of Premixed Turbulent Spherical Flame Kernels;367
28.1;1 Introduction;367
28.2;2 Numerical Approach and Physical Conditions;369
28.3;3 Results;371
28.4;4 Flamelet Analysis;375
28.5;5 Conclusions;378
28.6;Acknowledgments;378
28.7;References;378
29;Large Eddy Simulation of a Turbulent Ethylene/ Air Diffusion Flame;380
29.1;1 Introduction;380
29.2;2 Large Eddy Simulation;382
29.3;3 Numerical Simulation;387
29.4;4 Experimental Setup and Results;388
29.5;5 Conclusions;393
29.6;References;393
30;Energy Fluxes and Shell-to-Shell Transfers in MHD Turbulence;395
30.1;1 Introduction;395
30.2;2 Methodology;396
30.3;3 Numerical Results;400
30.4;4 Conclusions;403
30.5;Acknowledgments;405
30.6;References;406
31;Color Plates;407