This book gathers the proceedings of the 11th workshop on Direct and Large Eddy Simulation (DLES), which was held in Pisa, Italy in May 2017. The event focused on modern techniques for simulating turbulent flows based on the partial or full resolution of the instantaneous turbulent flow structures, as Direct Numerical Simulation (DNS), Large-Eddy Simulation (LES) or hybrid models based on a combination of LES and RANS approaches. In light of the growing capacities of modern computers, these approaches have been gaining more and more interest over the years and will undoubtedly be developed and applied further. The workshop offered a unique opportunity to establish a state-of-the-art of DNS, LES and related techniques for the computation and modeling of turbulent and transitional flows and to discuss about recent advances and applications.
This volume contains most of the contributed papers, which were submitted and further reviewed for publication. They cover advances in computational techniques, SGS modeling, boundary conditions, post-processing and data analysis, and applications in several fields, namely multiphase and reactive flows, convection and heat transfer, compressible flows, aerodynamics of airfoils and wings, bluff-body and separated flows, internal flows and wall turbulence and other complex flows.
Part I: Numerical methods.
Chapter
1. Adaptive Direct Numerical
Simulation with Spatially-Anisotropic Wavelet-Based Renement.
Chapter
2.
Towards Adaptive Mesh Renement for the Spectral Element Solver Nek5000.-
Chapter
3. Discrete Conservation of Helicity in Numerical Simulations of
Incompressible Turbulent Flows.
Chapter
4. A Massively Parallel,
Direction-Splitting Solver for DNS in Complex Geometries.
Chapter
5. An
Analysis of Time-Integration Errors in Large-Eddy Simulation of
Incompressible Turbulent Flows.
Chapter
6. Evaluation of the Spectral
Element Dynamic Model for LES on Unstructured, Deformed Meshes.
Chapter
7. A
Discontinuous Galerkin Variational Multiscale Approach to LES of Turbulent
Flows.
Chapter
8. Implicit LES Approaches via Discontinuous Galerkin Methods
at Very Large Reynolds.
Chapter
9. Implicit LES of a Turbulent Channel Flow
with High-Order Discontinuous Galerkin and Finite Volume Discretization.-
Chapter
10. An Implicit Discontinuous Galerkin Method with Reduced Memory
Footprint for the Simulation of Turbulent Flows.
Chapter
11. On the
Development of an Implicit High-Order Discontinuous Galerkin Solver for a
Hybrid RANS-LES Mode.
Chapter
12. Assessment of High-Order Discontinuous
Galerkin Methods for LES of Transonic Flows.
Chapter
13. Efcient
Pressure-Correction Method for Interfacial Tracking Appropriate for the
Immersed Boundary Method.- Part II: LES Modeling.
Chapter
14. On the Eddy
Viscosity Associated with the Subgrid Stresses.
Chapter
15.
Implicit/Explicit Spectral Viscosity and Large-Scale SGS Effects.
Chapter
16. Realizable Dynamic Large Eddy Simulation.
Chapter
17. The Dynamic
Smagorinsky Model in 5123 Pseudo-Spectral LES of Decaying Homogeneous
Isotropic Turbulence at Very High Re.
Chapter
18. Nonlinear Subgrid-Scale
Models for Large-Eddy Simulation of Rotating Turbulent Flows.
Chapter
19. A
New Subgrid Characteristic Length for LES.
Chapter
20. On the Richardson
extrapolation of the Reynolds Stress with the Systematic Grid and Model
Variation Method.
Chapter
21. Spatial Filtering for Reduced Order Modeling.-
Chapter
22. A RANS Assisted LES Approach.- Part III: Pre-processing,
Post-processing and Data Analysis.
Chapter
23. Analysis of a Synthetic
Turbulence Generation Method for Periodic Congurations.
Chapter
24. The
Effect of Lossy Data Compression in Computational Fluid Dynamics
Applications: Resilience and Data Postprocessing.
Chapter
25. Augmented
Prediction of Turbulent Flows via Sequential Estimators.- Part IV: Multiphase
and Reactive Flows.
Chapter
26. High Performance CFD/DEM Approach in Complex
Geometries on Unstructured Meshes.
Chapter
27. Direct Numerical Simulation
of Spherical Bubbles in a Downward Turbulent Channel Flow.
Chapter
28. DNS
of Thermocapillary Migration of Deformable Droplets.
Chapter
29. The Motion
of Settling Particles in Isotropic Turbulence: Filtering Impact and Kinematic
Simulations as Sublter Model.
Chapter
30. Evaporation Dynamics in Dilute
Turbulent Jet Sprays.- Chapter
31. A Novel Turbulent Inow Data Generation
Method and Its Application to the Simulation of Primary Breakup.
Chapter
32.
Studying Transient Jet ames by High-Resolution LES Using Premixed Flamelet
Chemistry.
Chapter
33. Identication of Combustion Trajectories Using
t-Distributed Stochastic Neighbor Embedding (t-SNE).
Chapter
34. Impact of
Scalar Dissipation Rate on Turbulent Spray Combustion Investigated by DNS.-
Chapter
35. Modeling of Convective and Conductive Conjugate Heat Transfer in
a Kerosene/Air Spray Flame Used for Aeronautical Fire Resistance Tests.- Part
V: Convection and Heat Transfer.
Chapter
36. Towards the Direct Numerical
Simulation of a simplied Pressurized Thermal Shock.
Chapter
37. Study of
the Flow Around a Heated Cylinder in Mixed Convection Regime.
Chapter
38.
Direct Numerical Simulation of Convective Turbulent Channel Flow of uid
Mixtures.
Chapter
39. Momentum and Buoyancy Repartition in Turbulent Mixed
Convection.
Chapter
40. Buoyancy-driven Flow Inside an Asymmetrically Heated
Cavity.
Chapter
41. LES of Natural Convection in a Closed Cavity.- Part VI:
Compressible Flows.
Chapter
42. Polynomial Adaptivity in LES: Application to
Compressibility Effects Investigation on Bluff Bodies.
Chapter
43. Direct
Numerical Simulation of Compressible Flows Around Spherical Bodies Using the
Immersed Boundary Method.
Chapter
44. Large Eddy Simulation of Highly
Compressible Jets with Tripped Boundary Layers.
Chapter
45. Analysis of
Dense Gas Effects in Compressible Turbulent Channel Flows.- Part VII:
Airfoils and Wings.
Chapter
46. Effect of Inow Turbulence on LES of an
Airfoil Flow with Laminar Separation Bubble.
Chapter
47. Flow around Thick
Airfoils at Very High Reynolds Number. Stall and Dynamic Stall Applications.-
Chapter
48. On the Resolution of Mean Skin Friction by Hybrid RANS/LES
Simulations at High Reynolds Numbers.
Chapter
49. DNS of Separated Low-Re
Flow around a Cambered Aerofoil.
Chapter
50. High Reynolds Number Airfoil:
from Wall-Resolved to Wall-Modeled LES.- etc.
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