Test Case 4: TU München Drivaer vehicle

This benchmark case is based on the Drivaer vehicle by TU Munich. The specific configuration considered here is

• fastback,
• smooth underbody (symmetric car, half body simulation possible),
• closed wheels.

Sample views of the geometry are shown below.

Participants can use the following definitions of the base shape:

• download the geometric CAD description from TU Munich,
• use a OpenFOAM Snappy Mesh provided by Dr. Vangelis Papoutsis-Kachiagas of NTUA and cand. Dr. Christos Kapellos of VW,
• use a prism/tet or hex mesh produced by the ANSA mesh generator that will kindly be provided by the benchmark sponsor Beta. A description of the meshes is found here.

Size/Type	Fluent	OpenFOAM
coarse prism/tet	131Mb	131Mb
fine prism/tet	276Mb	282Mb
fine hexa	159Mb	156Mb

Two optimisation scenarios are considered:

1. Drag minimisation by shape change of the side view mirror, subject to geometric constraints
2. Minimisation of acoustic signature by shape change of the side view mirror, subject to geometric constraints. The acoustic pressure is approximated by the integral of the turbulent viscosity ν_t integrated over a control volume near the front side window.

Details about the flow conditions and constraint definitions can be found here (version 1.0, 25 February 2015).