2nd AIAA Geometry and Mesh Generation Workshop
Sponsored by the Meshing, Visualization, and Computational Environments Technical Committee

Mini-Symposium: Mesh Effects on CFD Solutions

While much has been learned from analysing the outputs from GMGW-1 and HiLiftPW-3, to date there has been no systematic quantification of the effects of mesh dependence on the flow solutions obtained, or an assessment of how these compare with differences in turbulence models and/or specific solver features. Nor are there definitive answers about what mesh features help reduce solution variability, beyond simply generating finer meshes.

This mini-symposium is intended to provide a brief overview of this topic and provide a forum to explore how the design of numerical experiments can be improved to allow data to be gathered identifying both the strength of the effect of the mesh on solution variability and the mesh features that have the biggest impacts. The outcomes will be used to inform the design of both GMGW-3 and HiLiftPW-4 so that meaningful data can start to emerge on this topic.

This mini-symposium has been scheduled for the afternoon of day 2 of GMGW-2 to allow SciTech 2019 attendees with specific interests in this area to participate more easily. It will take the form of a series of short keynote presentations – including one reviewing what can be said, statistically, about HiLiftPW-3 results, in terms of relative impact of mesh, turbulence model, and solver – followed by a series of facilitated, small group discussions (in Birds Of A Feather form). The meeting will conclude by allowing all participants to review the outputs from each BOF and contribute to a group discussion in which the key points to consider going forward will be identified.

Topics likely to be addressed in the BOF session include:

1. Design of numerical experiments so that the results will give statistical significance.
2. Design of mesh families with the goal of identifying key mesh features that reduce mesh dependence of solutions.
3. How to identify solver / turbulence model features that reduce mesh dependence of solutions.
4. What solution outputs to pay attention to in examining mesh / model / solver effects.

If you would like to be considered as a potential keynote speaker, or would like to offer suggestions as to what topics should be addressed during this event, please e-mail meshingworkshop@gmail.com.