United Kingdom, November 16, 2016

NAFEMS is excited to announce this one day seminar,
exploring the role of Grid Generation, HPC and Turbulence
Modelling.

Presentations will be made by leading industry and
academic experts, including representation by Jaguar Land
Rover, Frazer Nash, Dyson and EDF Energy.

A full agenda and registration can be found on the NAFEMS
website at
https://www.nafems.org/events/nafems/2016/guide-to-high-
fidelity-cfd-for-industry/.

Description:

 

The Role of Grid Generation, HPC and Turbulence Modelling 

 

This seminar will focus on these high-fidelity methods  

and in particular the role of grid design and resolution,  

HPC and the formulation of the approaches themselves.  

Through several presentations from experts representing  

some of the key engineering sectors (automotive,  

aerospace, oil & gas, nuclear), practical examples of  

these methods will be presented offering attendees a  

chance to understand and question if these methods could  

be applied to their simulations. 

 

The major CFD code vendors will also be represented at  

this seminar, allowing attendees to see the full range of  

options open to their company or institution. 

 

With this combination of activities, delegates will leave  

the seminar having a better understanding both of the  

theory behind high-fidelity methods but also industrial  

examples of their real-life use. 

 

For many companies there is a growing desire to improve  

the accuracy of their CFD simulations, in order to  

improve correlation to experiments and to allow more of  

their design to be undertaken in CFD. 

 

This desire for greater accuracy has led many to look  

beyond traditional Reynolds Averaged Navier-Stokes (RANS)  

approaches for turbulence towards Large Eddy Simulation  

(LES). Whilst wall-resolved LES models can in general  

provide a much better alternative to RANS models for  

unsteady flows, they do so at a much higher cost, so much  

higher that for high-Reynolds numbers flow these costs  

are too great for general purpose calculations.   

 

Hybrid RANS-LES methods offer an attractive alternative  

to wall-resolved LES, where RANS methods are applied in  

regions of the flow which are easy to predict (attached,  

steady flow) and LES methods in the more challenging  

separated regions. These methods, if correctly applied,  

can provide close to LES accuracy for a greatly reduced  

computational cost. However, the accuracy of such  

approaches is heavily associated with the mesh quality &  

resolution, numerical schemes and the availability of HPC  

resources. In addition, since the first use of DES  

(detached eddy simulation) nearly 20 years ago, numerous  

alternative approaches with an array of acronyms (DES,  

DDES, IDDES, ZDES, SAS, WMLES, XLES) have become  

available.  For CFD users wishing to use high-fidelity  

methods, the initial challenge is understanding which  

approach is best suited to their application. 

 

Who Should Attend? 

 

This seminar will be of interest to academics as well as  

practitioners and industrial users of commercial CFD  

codes. The focus of the talks will be on high-fidelity  

methods such as pure LES and hybrid RANS-LES methods (e.g  

DES, SAS, PANS), but people with a general interest in  

the application of CFD to complex real-life problems will  

also benefit from attending this seminar.