Open enrollment training

Unsteady Simulations for Industrial Flows

Large Eddy Simulation (LES), hybrid LES-RANS, Detached Eddy Simulation (DES) and unsteady RANS

The development of computers and Computational Fluid Dynamics (CFD) has made the numerical simulation of complex fluid flow, combustion, aero-acoustics and heat transfer problems possible. Turbulent flow in three-dimensional, complex geometries -- unsteady or steady -- can be dealt with

Presently CFD methods can replace, or complement, many experimental methods; we can use a numerical wind tunnel instead of an experimental one.

Today, most CFD simulations  are carried out with traditionalRANS (Reynolds-Averaged Navier-Stokes). In RANS, we split the flow variables into one time-averaged (mean) part and one turbulent part. The  latter is modelled with a turbulence model such as k-eps or Reynolds Stress Model.

For many flows it is not appropriate to use RANS, since the turbulent part can be very large and of the same order as the mean. Examples are unsteady flow in general, wake flows or flows with  large separation. For this type of flows, it is more appropriate to use Large Eddy Simulation (LES).  In order to extend LES to high Reynolds number flows new methods have recently been developed. These are called DES(Detached Eddy Simulation),URANS (Unsteady RANS),  PANS(Partially Averaged Navier-Stokes) or Hybrid LES-RANS. They are all unsteady methods and they are a mixture of LESand RANS.

The course will give an introduction to LES, DES, hybrid LES-RANS and unsteady RANS.

For more information and registration, please visit:

http://www.tfd.chalmers.se/~lada/cfdkurs/cfdkurs.html

Contact

If you want more information contact Lena Henriksson.

Phone: +46 31 772 4222
Mobile: +46 704 80 81 45
E-mail: lena.henriksson@chalmers.se

Full refund of educational program/course fees will be made for reservations cancelled no later than eight weeks prior to the start of the program/course. Later cancellations incur a cancellation fee as follows:

  • 2 weeks or less prior to program start 100% of the educational program/course fee
  • 2-4 weeks prior to program start 50% of the educational program/course fee
  • 4-8 weeks prior to program start 25% of the educational program/course fee, for educations in the Shipping area: 0% of the educational program/course fee

We are always willing to consider a colleague as a substitute for the original applicant. Cancellation and postponement must be made in writing. Cancellation of accommodation is subject to the cancellation policies of the hotels.