Large Eddy Simulation Awareness Workshop

Turbulence Modelling beyond RANS

Large Eddy Simulation, LES, is fast becoming more readily available in the major commercial CFD codes and from the internet. Computer power is increasing rapidly too, at an affordable cost, making it potentially easier to run simulations using such methods.

More CFD users are therefore becoming interested in learning about this method and its applications. While LES is very powerful it also requires some care to be used properly, as it is conceptually very different from RANS, the workhorse of industrial CFD.

This seminar will start by establishing and comparing the fundamental assumptions supporting RANS and LES and, in doing so, will highlight what the true potential of LES is, as well as its limitations. It will continue by way of a short review of the most common LES formulations before allowing time for the presentation of two key applications. The software and hardware requirement of running a LES simulation will also be reviewed as we move towards the end of the day to add a cost dimension to the information pack provided.

More affordable alternatives, so-called hybrid methods, based on LES principles, such as Detached Eddy Simulation (DES), will also be presented together with examples of their applications and own limitations. A brief question and answer session will summarise the day.

With this combination of activities, delegate will leave the seminar having a better understanding of what LES can offer, to which problems it is suited and what constraints and costs it bears.

Agenda

A full agenda will be available in due course. However, the presenations and discussion will cover the following themes:-

• RANS - a refresher; including what is behind RANS?
• LES - what is LES? what is implied in the formalism of the LES approach? requirements [numerical/simulation], analysis, convergence, flavours, applications [including illustrations], requirements [computational] and limitations
• Alternative approaches, e.g. hybrid methods such as DES
• Recommendations and wrap-up.

Who Should Attend?

This seminar will be of interest to practitioners and Industrial users of commercial CFD codes in the main, familiarity with standard RANS turbulence modelling such as k-epsilon models will be a prerequisite as RANS will serve as the stepping stone to the day.

Venue

Rolls-Royce Learning & Career Development Centre
Wilmore Road
Derby
DE24 8BG
Map: http://www.business-business.co.uk/aerospaceopportunities09/directions/derby.html

Easy international access via East Midlands Airport, the venue is located just 13 miles from the airport, which is served by many low-cost carriers.

Directions

From the North
Leave the M1 at junction 25, the A52 interchange.  Follow the A52 towards Derby until and turn onto the A5111 (Derby Ring Road).  Follow the A5111 (Raynesway) to the roundabout at the junction of the A6.  Turn left and then immediately right at the next roundabout, continuing on the A5111.  Go straight ahead at the next roundabout (with the footbridge over it).  At the next traffic lights, turn left into Moor Lane.  At the end of Moor Lane, turn Left into Victory Road.  After a short distance turn right at a mini-roundabout into Wilmore Road; the Learning and Career Development Centre is immediately on the right.

From the North West
Take the M6 south to junction 15, the A50 interchange.  Take the A50 East, through Stoke on Trent towards the M1.  Continue on the A50 until the junction with the A514 (the junction after the A38 interchange).  Take the A514 towards Derby, passing through the suburbs of Chellaston and Shelton Lock (approx. 1¼ miles).  At the second traffic light controlled junction turn left into Merrill Way.  After a short distance turn left at a mini-roundabout into Wilmore road; the Learning and Career Development Centre is immediately on the right.

From the South West
Take the A38 north to the interchange of the A50.  Take the A50 towards Nottingham.  At the next junction, take the A514 towards Derby, passing through the suburbs of Chellaston and Shelton Lock (approx. 1¼ miles).  At the second traffic light controlled junction turn left into Merrill Way.  After a short distance turn left at a mini-roundabout into Wilmore road; the Learning and Career Development Centre is immediately on the right.

From the South
Take the M1 north from London to junction 24, the A50 interchange.  Take the A50 until junction 3, the A514 interchange (do not take junction 2 sign-posted Derby A6).  Follow the A514 towards Derby, passing through the suburbs of Chellaston and Shelton Lock (approx. 1¼ miles).  At the second traffic light controlled junction turn left into Merrill Way.  After a short distance turn left at a mini-roundabout into Wilmore road; the Learning and Career Development Centre is immediately on the right.