Common Research Wind Tunnels for
CFD Verification and Validation is a NATO task group, currently in its planning year, and an ONR-sponsored effort at Virginia Tech. The goals of CRWT are to develop the methods needed for systematic improvement in the accuracy of CFD using wind-tunnel comparisons. Specifically:
- A series of best practices for wind
tunnel test modeling and validation using CFD.
- Improved understanding of the
influence of boundary condition uncertainties on wind tunnel computations.
The activity is focused on four facilities chosen to serve as standard computational test cases. These are the Virginia Tech Stability Wind Tunnel (representing the low-speed regime), the ONERA S3Ch facility (representing the transonic regime) in Meudon, France
(representing the transonic regime), the DNW-TWG wind tunnel in Gottingen, Germany (representing transonic and supersonic regimes), and the William B Morgan Large Cavitation Channel in Memphis Tennessee (representing hydrodynamic testing).
Activity surrounding each facility is focused on the development of empty-test-section and model-in CFD test cases. Comparative assessments of CFD
modeling and measurements for those test cases will be coupled with iterative improvement in the
experimental definition of those test cases.
This is activity is still in its first stages, and we are actively seeking participants from NATO countries including, in particular, computational teams interested in participating in facility simulation challenges. The first blind validation challenge for the Virginia Tech Stability Wind Tunnel has been released. If you are potentially interested in participating, either as a computor, or as an experimentalist interested developing or modifying facilities to make them suitable as computational test cases, please complete the contact form below.
