International Scientific Seminar Frontiers of numerical jet modelling: from engineering to environmental flows The Kavli Royal Society International Centre, January 2011 Organised by Sergey Karabasov, University of Cambridge

Motivation for the meeting Jets are one of the most fascinating topics in fluid mechanics. They occur in a number of engineering and environmental flows, from high-speed aero engines to the streams of cooling air applied inside a gas turbine, and from the smoke of a chimney pipe to the mesoscale currents in ocean circulations. In case of high-Reynolds number flows, the jet development involves a great diversity of length and time scales. Because of a poor understanding of turbulence phenomena, especially for transitional flows, jet modelling is very challenging. This seminar is proposed as a discussion forum for the experts who develop and apply novel techniques in three different research areas – aeroacoustics, turbomachinery and environmental flows. The goal is to initiate discussions between those who develop new mathematical modelling techniques, those who need accurate tools for understanding the new physical mechanisms in formation and development of jet flows, and those, who are involved in both research activities.

Topical application areas Tom Hynes (Cambridge University) Jet noise modelling based on an acoustic analogy Jet noise modelling based on an acoustic analogy Li He (Oxford University) Multi-scale modelling for blade heat transfer Multi-scale modelling for blade heat transfer Malcolm Roberts (Met Office Hadley Centre) High resolution coupled ocean/climate modelling High resolution coupled ocean/climate modelling

LES in engineering Dimitris Drikakis (Cranfield University) High-order Implicit LES methods for transitional flows and turbulent mixing High-order Implicit LES methods for transitional flows and turbulent mixing Paul Tucker (Cambridge University) Hybrid LES of practical turbomachinery flows Hybrid LES of practical turbomachinery flows Gary Page (Loughborough University) Prediction of two-point correlations for jets using LES and the influence of microjet injection Prediction of two-point correlations for jets using LES and the influence of microjet injection

Geophysical flow modelling David Dritschel (St. Andrews University) The Combined Lagrangian Advection Method: probing deep into the nature of ultra-high Reynolds number geophysical flows The Combined Lagrangian Advection Method: probing deep into the nature of ultra-high Reynolds number geophysical flows Eleuterio Toro (University of Trento) High order ADER schemes for PDEs: theory and geophysical applications High order ADER schemes for PDEs: theory and geophysical applications Pavel Berloff (Imperial College London) Dynamics of multiple zonal jets in the oceans

High-resolution turbulent flow simulations and modelling Matthew Hecht (Los Alamos National Laboratory) Western boundary jet systems and our understanding of the role of eddies Western boundary jet systems and our understanding of the role of eddies Sergei Utyuzhnikov (Manchester University) Nonlocal Artificial Boundary Conditions Nonlocal Artificial Boundary Conditions Christophe Bogey (Ecole Centrale de Lyon) Towards high-fidelity Large-Eddy Simulations of high- Reynolds-number subsonic jets Towards high-fidelity Large-Eddy Simulations of high- Reynolds-number subsonic jets

High-accuracy methods for unsteady flow simulations Claus-Dieter Munz (Stuttgart University) Space-time adaptive discontinuous Galerkin schemes for the direct simulation of noise generation and propagation Space-time adaptive discontinuous Galerkin schemes for the direct simulation of noise generation and propagation Vladimir Titarev (Cranfield University) High order WENO schemes on unstructured grids for CFD problems High order WENO schemes on unstructured grids for CFD problems Vassily Goloviznin (Moscow Institute of Nuclear Safety) PLES: Towards Perfect LES for turbulent flows PLES: Towards Perfect LES for turbulent flows

Summary and conclusions Peer Boehning (Rolls-Royce Deutschland) Industrial requirements of numerical methods for aero- engine jet noise predictionIndustrial requirements of numerical methods for aero- engine jet noise prediction