QLES2009, 9-11 September 2009 - Information for Authors

The focus of QLES is on issues related to assessing, assuring, and predicting the quality of LES. The tendency to apply LES-methodologies to turbulent flow problems of significant complexity, such as arise in various applications in technology and in many natural flows puts this workshop in its timely context. Different error sources in LES are related to subgrid-scale modeling, to numerical discretization techniques, to boundary-condition treatments, etc. To establish the credibility of LES as a tool for the innovation of industrial flow applications and the study of complex-physics problems, a comprehension of the nonlinear error-accumulation arising in large-eddy simulations is required.

QLES2009 invites original contributions which enhance the knowledge on error sources and their interaction in LES, and may lead to criteria for the prediction and optimization of simulation quality. The workshop will concentrate on topics such as:

	mathematical analysis and foundation for subgrid modeling,
	numerical and mathematical analysis of subgrid-scale-model and discretization errors,
	computational error-assessment,
	high-Reynolds number modeling and error-assessment of near-wall flows,
	error assessment in complex applications,
	treatment of boundary conditions, inflow boundaries, generation of artificial turbulence, and related errors.

We would like to encourage contributions in one of the above categories, which try to approach classical LES questions from a new perspective related to quality and reliability. A brief overview of work on quality and reliability of LES methods in the last decades, can be, e.g., found in the preface to the proceedings of QLES2007 (Quality and Reliability of Large-Eddy Simulations, Springer, 2008).

	March 15, 2009: Abstract Submission. Two-page abstracts should be submitted as a pdf-file to Maria Vittoria Salvetti. Please indicate in the accompanying E-mail in which of the above categories your abstract best fits. Abstracts should be prepared with LaTeX, using the qles-abstract style file. This file and an example can be dowloaded here. Abstracts will be published in a book of abstracts.
	May 4, 2009: Notification of Acceptance.
	June 15, 2009: Author Registration. At least one author per contribution should be registered, and payement reveived by this date, such that we can properly organize the conference shedule
	July 31, 2009: Early Registration.
	July 31, 2009: Submission of full paper. Authors are invited to submit a full paper, which will appear in the conference proceedings published by Springer. A selected number of papers will be included in a special issue of the Journal of Scientific Computing.

Guidelines for the preparation and submission of a full paper

More information will follow.

Benchmark problem for the COST P20 LES-AID program

The COST Action P20 LES-AID is a 4 year EU program that started early February 2006. The aim of this COST Action is to stimulate the development and application of small-scale turbulence modeling and numerical methods needed for large-eddy simulation of realistic technological and scientific problems. In the framework of this program, benchmark problems for the testing and development of LES methods are being defined. Currently, one of the benchmark cases up and running is related to WG3 of LES-AID, which covers the large-eddy simulation of multi-phase turbulence. This benchmark is related to the simulation of particle-laden flows, and a detailed description can be downloaded (pdf). The complete datasets of the reference direct numerical simulations are downloadable from the iCFDdatabase.

QLES2009 will provide a further platform for reporting on this benchmark, and a special dedicated session will be attributed for this. Interested contributors should follow the same time line as for standard submissions (see above). However, please direct two-page abstracts (March 15) and the full paper (July 31) to Hans Kuerten AND Maria Vittoria Salvetti