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Applied LES, DES, PANS and URANS for Industry and Research, Apr 2014, Sweden

Posted By: Sinisa Krajnovic
Date:Wed, 26 Feb 2014, 8:00 p.m.


Sweden, April 23, 2014

A three-day course in "Applied LES, DES, PANS and URANS for Industry" will be
given at Chalmers, Gothenburg, Sweden, between 23-25 April 2014.The course
will cover three important applications of CFD techniques in industry: prediction
using unsteady CFD simulations (LES, DES, PANS, URANS), CFD for flow control
and aerodynamic shape optimization. We believe that the course is useful for
engineers and researcher in all industrial sectors where unsteady flows are of
importance.


Description:

 

The industry has started to introduce time-dependent numerical simulation such
as large eddy simulation (LES), unsteady RANS or hybrid approaches such as DES
in their development process. The advantage of these techniques is much higher
accuracy of the prediction compared with steady RANS simulations but also
possibility to replace costly physical testing and simulate flow situations where
experiments are difficult or impossible. Although most commercial (and open
source) CFD software have option to run unsteady methods, their usage requires
knowledge in running unsteady simulations which puts different requirements
than steady RANS on all steps of the process. Being resolving techniques, these
techniques put higher requirements on all steps in the project, from the quality
of the computational grids, numerical discretization, performing the CFD
simulation to analysis of large amount of data obtained from a time-dependent
simulation.

This aim of this course is to equip an engineer or researcher with the knowledge
to run unsteady CFD simulations for the application of his interest. After the
course, the participant will be able to:

- choose the adequate unsteady technique

- prepare computational grid for that is required for the chosen technique

- chose appropriate spatial and temporal discretization and other parameters in
the simulation

- run the simulation and do appropriate monitoring of the results

- postprocessor the results and evaluate the quality of the achieved prediction

We will start with introduction in how time-dependent techniques such as Large-
Eddy Simulations (LES), Detached-Eddy Simulations (DES), Partially-Averaged
Navies-Stokes (PANS) and unsteady RANS (URANS) can be used in vehicle
aerodynamics. We will discuss differences between these techniques and give
best practical guidelines for usage of each technique. We will show when each of
the techniques could/should be used and how to use it.

We believe that the course is useful for engineers and researcher in all industrial
sectors where unsteady flows are of importance. The practical example that we
will study during the course come from vehicle aerodynamics and bluff body
aerodynamics but the method is by no means limited to these two fields. The
same methodology can be used in many other industrial fields where separated
and unsteady flows occur.

The course will cover three important applications of CFD techniques in industry:
prediction using unsteady CFD simulations (LES, DES, PANS, URANS), CFD for flow
control and aerodynamic shape optimization.


Details about the course with theory and computer exercises can be found at

http://sinisa-aerodynamics.se/courses-training-2/


Registration is here
https://www.chalmersprofessional.se/en/apply?
tags=industriteknik&id=4831#.Uw44mP3lfwI


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