ERCOFTAC/SIG 42 - SIG 35

11th Workshop on Synthetic Turbulence Models

  29th and 30th June 2015, Ecole Centrale de Lyon, Eculy, France

Synthetic flow structure – clustering and modelling

 

Ecole Centrale de Lyon, Eculy, France




Organizers

Dr C. Cambon
LMFA Ecole Centrale de Lyon, Ecully France
Claude.Cambon@ec-lyon.fr
Dr F. Nicolleau
F.Nicolleau@sheffield.ac.uk
University of Sheffield, Sheffield Fluid Mechanics, SFMG - Department of Mechanical Engineering, Sheffield, United Kingdom
Dr T. Michelitsch
michel@lmm.jussieu.fr
Institut Jean le Rond d'Alembert, CNRS UMR 7190
Université Pierre et Marie Curie (Paris 6), Paris, France
Aims of the conference: 
- This conference will be the 10th  held by the ERCFOFTAC  Special Interest Group on Synthetic Turbulence Models. It follows
(1) - 29th-30th May 2007,  The University of Sheffield, UK ERCOFTAC bulletin 75, 2007 
(2) - 29th-30th November 2007 UPC, Vilanova i la Geltru, Spain ERCOFTAC bulletin 77, 2008 
(3) - 3th-4th July 2008 The University of Newcastle, UK ERCOFTAC bulletin 79, 2009 
(4) - 11th-12th December 2008  Nancy-Université; France ERCOFTAC bulletin 79, 2009 
(5) - 1st-3rd July 2009  Warsaw University of Technology, Poland ERCOFTAC bulletin 81, 2009 
(6) - 15th-6th July 2010 Ecole Centrale de Lyon, France ERCOFTAC bulletin 85, 2011 
(7) - 22nd-23rd Sept 2011 Imperial College, London, UK  ERCOFTAC bulletin 89, 2011
(8) - 28th-29th June 2012 Université Pierre et Marie Curie, Institut Jean le Rond d'Alembert, Paris, France   ERCOFTAC bulletin 93, 2012
(9) - 11th - 12th July 2013 Wrocław University of Technology, Poland    ERCOFTAC bulletin 97, 2013
(10) - 4th - 5th September 2014 LSTM University of Erlangen-Nuremberg, Germany   ERCOFTAC bulletin 101, 2015


Conference Program: 

Preliminary talks & programme: please contact the organiser if you would like to give a talk 




C. Cambon, LMFA, Ecole Centrale de Lyon, Ecully, France
The N S f approach to geophysics and astrophysics

P. J. Diamessis, Cornell University, USA 
Turbulent boundary layers under internal solitary waves

L. Gostiaux, LMFA, Ecole Centrale de Lyon, Ecully, France
Thorpe scale analysis applied to in situ measurements and DNS

F. Laadhari, LMFA, Universit\'e Claude Bernard, Lyon I, France
Transition to turbulence in two-dimensional Poiseuille flow with large aspect ratios


N. Malik, King Fahd University of Petroleum and Minerals, Saudi Arabia
A new sparse 3D multi-scale grid turbulence generator design 


N. Malik, King Fahd University of Petroleum and Minerals, Saudi Arabia
On turbulent pair diffusion: the evidence for departure from Richardson locality


T. Michelitsch, B. Collet, A.F. Nowakowski and F. Nicolleau, Université Pierre et Marie Curie, Institut Jean le Rond d'Alembert, Paris, France
Discrete fractional calculus on finite lattices

T. Möller, J. Peinke and C. Keylock, Institute of Physics, Carl-von-Ossietzky University Oldenburg, Germany
Comparison of two techniques to analyse turbulence in the inertial range

F. Nicolleau, Sheffield Fluid Mechanics Group, University of Sheffield, UK
Effect of gravity on clustering patterns and inertial particles attractor

A. F. Nowakowski, Sheffield Fluid Mechanics Group, University of Sheffield, UK
TBA

Jacek Pozorski, IMP Gdansk, Polish Academy of Sciences
Towards particle dispersion modelling in wall-bounded turbulence

J.M. Redondo, Fisica Aplicada UPC, Spain
TBA



J. C. Vassilicos, Imperial College, London, UK 
The streamwise turbulence intensity in the inertial layer of a pipe/channel  flow'

I. Vinkovic, LMFA, Ecole Centrale de Lyon, Ecully, France
Turbulent dispersion of particles in channel flow

Audience:

This conference on synthetic turbulence co-organised by
ERCOFTAC/SIG 42 and SIG35 is open to anyone interested in flow modelling
and/or "synthetic turbulence" including (but not restricted to)
Kinematic Simulation, (KS hereinafter). 

More fundamental talks on particle dispersion in turbulent flows or fluid dynamics are also welcome.

Motivation:
KS is widely used in various domains, including Lagrangian aspects in turbulence mixing/stirring, particle dispersion/clustering, and last but not least, aeroacoustics. Flow realisations with complete spatial, and sometime spatio-temporal, dependency, are generated via superposition of random modes (mostly spatial, and sometime spatial and temporal, Fourier modes), with prescribed constraints such as: strict incompressibility (divergence-free velocity field at each point), high Reynolds energy spectrum, ... Recent improvements consisted in incorporating linear dynamics, for instance in rotating and/or stably-stratified flows, with possible easy generalisation to MHD flows, and perhaps to plasmas. KS for channel flows have also been validated.
However, the absence of "sweeping effects" in present conventional KS versions is identified as a major drawback in very different applications: inertial particle clustering as well as in aeroacoustics. Nevertheless, this issue was addressed in some reference papers, and merits to be revisited in the light of new studies in progress.
A further goal of this conference is to bring people from different disciplines together. In particular recent emerging fractal approaches have the potential to provide the framework for the construction of new synthetic turbulent flows. Interdisciplinary contributors are especially invited to contribute.

A non-exhaustive list of related topics can be proposed as follows:
- Synthetic models of turbulence (KS and others), - Lagrangian aspects of turbulence,
- Vortex dynamics and structure formation,
- Particle dispersion/clustering,
- Vorticity and multiphase flows,
- Vortex methods,
- DNS/LES and related techniques, - turbulent flows and multiscale (fractal) shapes, ... Participants (preliminary):
C. Cambon, Ecole Centrale de Lyon, France
P. J. Diamessis, Cornell University, USA
L. Gostiaux, Ecole Centrale de Lyon, Ecully, France
F. Laadhari, LMFA, Universit\'e Claude Bernard, Lyon I, France
N. Malik, King Fahd University of Petroleum and Minerals, Saudi Arabia
T. Michelitsch, Université Pierre et Marie Curie, Institut Jean le Rond d'Alembert, Paris, France
T. Möller, Institute of Physics, Carl-von-Ossietzky University Oldenburg, Germany
F.C.G.A. Nicolleau, University of Sheffield, Sheffield Fluid Mechanics Group, UK
A. F. Nowakowski, University of Sheffield, Sheffield Fluid Mechanics Group, UK
Jacek Pozorski, IMP Gdansk, Polish Academy of Sciences
J.-M. Redondo, UPC, Barcelona, Spain
N. Sangtani-Lakhwani, University of Sheffield, Aerodynamics Group, UK
J. Schröttle, German Aerospace Centre Institute of Atmospheric Physics, Germany
J.C. Vassilicos, Imperial College London, UK
I. Vinkovic, LMFA, Ecole Centrale de Lyon, Ecully, France
Practical information
Location Ecole Centrale de Lyon, 36 avenue Guy de Collongue, 69131 Ecully, France
conference room: AMPHITHEATRE 201 How to get to Ecole Centrale de Lyon Airport shuttle Public transport in Lyon

PROGRAMME PROGRAMME