The fifth ERCOFfAC workshop 'Direct and Large-Eddy Simulation-5' (DLES-5) was held at the Munich University of Technology, August 27-29, 2003. It is part of a series of workshops that originated at the University of Surrey in 1994 with the intention to provide a forum for presentation and dis­ cussion of recent developments in the field of direct and large-eddy simula­ tion. Over the years the DLES-series has grown into a major international venue focussed on all aspects of DNS and LES, but also on hybrid methods like RANSILES coupling and detached-eddy simulation designed to provide reliable answers to technical flow problems at reasonable computational cost. DLES-5 was attended by 111 delegates from 15 countries. Its three-day pro­ gramme covered ten invited lectures and 63 original contributions partially pre­ sented in parallel sessions. The workshop was financially supported by the fol­ lowing companies, institutions and organizations: ANSYS Germany GmbH, AUDI AG, BMW Group, ERCOFfAC, FORTVER (Bavarian Research Asso­ ciation on Combustion), JM BURGERS CENTRE for Fluid Dynamics. Their help is gratefully acknowledged. The present Proceedings contain the written versions of nine invited lectures and fifty-nine selected and reviewed contributions which are organized in four parts: 1 Issues in LES modelling and numerics 2 Laminar-turbulent transition 3 Turbulent flows involving complex physical phenomena 4 Turbulent flows in complex geometries and in technical applications.

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Preface Part 1 ISSUES IN LES MODELING AND NUMERICS 1.1 SUBGRID MODELING Invited lecture: Nonlinear regularization for large-eddy simulation; Bernard J. Geurts, Darryl D. Holm Implicit and subgrid-scale modeling by adaptive local deconvolution; N.A. Adams Selective filtering versus eddy viscosity for subgrid modeling in LES; Christophe Bogey and Christophe Bailly High resolution DNS of a shear-free mixing layer and LES; O. Debliquy, B. Knaepen, D. Desmidts, D. Carati A nonlinear interactions approximation model for LES; M.U. Haliloglu and R. Akhavan Two level simulation of high-Re turbulent flows; Konstantin Kemenov and Suresh Menon Analysis of relaxation regularization as subgrid-scale model for LES; S.B. Müller, N.A. Adams and L. Kleiser Relaxation-term models for LES of transitional/turbulent flows; P. Schlatter, S. Stolz and L. Kleiser Kolmogorov equation for LES and its use for subgrid modeling; L. Shao, J.P. Bertoglio, G.X. Cui, H.B. Zhou and Z.S. Zhang High-pass filtered eddy viscosity models for LES; S. Stolz, P. Schlatter, D. Meyer and L. Kleiser A synthesis of similarity and eddy-viscosity models; Roel Verstappen

1.2 WALL MODELS FOR LES AND RELATED ISSUES Development of wall models for LES based on NSE; Markus Abel, Dragan Stojkovic and Michael Breuer POD of the autonomous near-wall region in a minimal channel flow; D. Desmidts, O. Debliquy, B. Knaepen, D. Carati On the difficulties in resolving the viscous sublayer; Franz Durst and Kamen N. Beronov A priori tests of models for the mean and fluctuating wall shear stress; H.-J. Kaltenbach

1.3 NUMERICAL TECHNIQUES AND ERROR ESTIMATION Invited lecture: Symmetry-preserving discretization for DNS; R.W.C.P. Verstappen, M.T. Dröge and A.E.P. Veldman Three-dimensional adaptive wavelet method for fluid-structure interaction; N.K.R. Kevlahan, O.V. Vasilyev, D. Goldstein and A. Jay Dynamics of commutator-errors in LES with non-uniform filter-width; Fedderik van der Bos, Bernard J. Geurts Identification of global error behavior in LES using a database approach; Johan Meyers, Bernard J. Geurts and Martine Baelmans

Part 2 LAMINAR-TURBULENT TRANSITION

2.1 INCOMPRESSIBLE FLOWS Invited lecture: DNS of streak breakdown in boundary layers; Luca Brandt and Dan S. Henningson Numerical simulation of transition to turbulence in MHD channel flow; D.S. Krasno, E. Zienicke, A. Thess, O. Zikanov, T. Boeck DNS of transitional and turbulent rotor-stator cavity flows; Eric Serre, Patrick Bontoux and Brian Launder DNS of a laminar separation bubble affected by free-stream disturbances; Jan Wissink and Wolfgang Rodi

2.2 COMPRESSIBLE FLOWS DNS of transonic flow about a supercritical airfoil; Igor Klutchnikov and Josef Ballmann DNS and LES of the transition process in a laminar separation bubble; Olaf Marxen and Ulrich Rist Crossflow vortices near the attachment line of a swept airfoil at M = 8; Jörn Sesterhenn and Rainer Friedrich

Part 3 TURBULENT FLOWS INVOLVING COMPLEX PHYSICAL PHENOMENA

3.1 MULTIPHASE AND NON-NEWTONIAN FLOWS LES of small-scale ocean turbulence coupled with buoyant plumes; B. Chen, Y. Song, M. Nishio, M. Akai, Lars Golmen LES of turbulent bubble formation and break-up based on interface tracking; Petar Liovic, Djamel Lakehal and Jong-Leng Liow LES of a particle1aden turbulent channel flow; A.W. Vreman, B.J. Geurts, N.G. Deen and J.A.M. Kuipers Analogy between SGS model and constitutive equations for viscoelastic fluids; Kiyosi Horiuti Turbulent channel flow of a suspension of fibrous particles; Michael Manhart and Rainer Friedrich

3.2 ACTIVE AND PASSIVE SCALARS LES of a stably stratified flow over longitudinally ridged walls; V. Armenio, L. Falcomer, G.F. Carnevale LES of conjugate heat-transfer using thermal wall-functions; Alexandre Chatelain, Frédéric Ducros and Olivier Métais Modeling of a passive scalar in a turbulent pipe flow using DNS; J. de Hoogh, M.P.B. Veenman and J.G.M. Kuerten LES and extreme value theory; Zhengtong Xie, Peter R. Voke, Paul Hayden and Alan G. Robins

3.3 NONPREMIXED AND PREMIXED TURBULENT COMBUSTION Invited lecture: Simulation of three-dimensional turbulent flames; Dominique Thevenin Large-eddy simulation of a gas turbine combustion chamber; Christophe Duwig, Laszlo Fuchs Modeling of pollutant formation near lean blow-out in gas turbine engines; G. Eggenspieler and S. Menon Direct numerical simulation of turbulent non-premixed flames; Renan Hilbert and Dominique Thévenin Transient inflow-data for LES; A. Kempf, M. Klein, J. Janicka Enhancement of mixing and combustion in buoyant noncircular plumes; K.H. Luo

3.4 COMPRESSIBLE TURBULENCE Invited lecture: DNS of an oblique shock wave impinging upon a turbulent boundary layer; Qinling Li and Gary N. Coleman Large-eddy simulations of compressible mixing layers; C. Le Ribault On the turbulence structure in compressible turbulent isothermal channel flow; S. Sarkar, H. Foysi and R. Friedrich

3.5 NOISE GENERATION AND RADIATION Invited lecture: Noise radiation from high-speed jets: some insights from numerical simulations; Sanjiva K. Lele Flow patterns and sound generation in low speed cavities; E.J. Aviral and R.F. Musafir Direct numerical simulation of the acoustic field of a turbulent offset jet; Bendiks-Jan Boersina

Part 4 TURBULENT FLOWS IN COMPLEX GEOMETRIES AND IN TECHNICAL APPLICATIONS

4.1 LES-RANS COUPLING AND DETACHED EDDY SIMULATION Invited lecture: Merging LES and RANS strategies: zonal or seamless coupling? K. Hanjalic and M. Hadziabdic, L. Temmerman and M. Leschziner Invited lecture: Detached-eddy simulation: current status and perspectives; Kyle D. Squires Detached-eddy simulation over a reference Ahmed car model; S. Kapadia, S. Roy, M. Vallero, K. Wurtzler and J. Forsythe LES and DES for broadband noise prediction in complex geometries; Massimiliano Ciardi and William N. Dawes

4.2 EFFECTS OF WALL PERMEABILITY, ROUGHNESS AND PRESSURE-GRADIENT Turbulent channel flow over a permeable wall; Wim-Paul Breugem and Bendiks-Jan Boersma Budgets of Reynolds stress in a rough wall channel flow; S. Leonardi, E. Mostarda, P. Orlandi, R.A. Antonia Effect of application/removal of adverse pressure gradient to wall layers; Christopher P. Yorke and Gary N. Coleman

4.3 FLOWS INVOLVING STREAMLINE CURVATURE AND SWIRL LES of turbulent flow in curved and S-shape ducts; Cécile Münch, Jérôme Hébrard and Olivier Métais LES of a flow with multiple streamwise curvatures; A. Silva Lopes, U. Piomelli and J.M.L.M.…