Announcement

Computational Fluid Dynamics (CFD) has developed to a key technology which plays an important role in design, development and optimization in engineering practice.  Although increasing computer capacities enable a broader use of highly resolved computational schemes such as Direct Numerical Simulation (DNS) and Large Eddy Simulation (LES), the statistical turbulence modelling used in the framework of the Reynolds Averaged Navier-Stokes (RANS) approach represents the current industrial standard.  The ERCOFTAC-IAHR Workshops on Refined Turbulence Modelling (SIG-15) aim to bring together scientists, researchers, users and developers from industry and from the academic field.

Following the previous workshops, the test cases chosen for the workshop held in Poitiers are all very challenging cases, involving complex underlying mechanisms of primary significance for industrial applications.  Two of the test cases, i.e., the flow over a periodic 2D hill and the flow around the Ahmed body (simplified car body), were already selected for the preceding workshop held in Darmstadt, Germany: the complexity of the underlying mechanisms and the challenge they represent for turbulence models have led to the renewal of these test cases.

The QNET-CFD network is associated to this ERCOFTAC-IAHR workshop because the case 9.4 (Flow around a simplified car body) is one of the 53 test cases under consideration in this network, in its Thematic Area 1 (External Aerodynamics), Application Challenge 5 (Ahmed body).  This network is aimed at providing European industries with a knowledge base of high quality application challenges and best practice guidelines. Therefore, the second day of the workshop was completely dedicated to the Ahmed body test case, in order to analyse in detail the features of the flow and the performances of the models. The main conclusions drawn from the results presented during the workshop will be inserted in the QNET-CFD knowledge base.
 
 

Test cases

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