Overset Mesh

In this part of the tutorial we will mainly generate an overset mesh for ADflow. We will use OpenVSP to create the geometry, generate a surface mesh with Pointwise (requires a license), and extrude the volume mesh with pyHyp.

We will do this process on the ONERA M6 Wing. It is a common example to validate flow solvers in the transonic regime. Note that an overset mesh might not be needed for a simple geometry like this; however, we will use this geometry as an example to demonstrate the overset mesh surface overlap.

Here are a few of the items we will cover in the following pages:

  • Some theory on overset meshes

  • Create a wing geometry using OpenVSP

  • Surface mesh generation with Pointwise

  • Volume mesh extrusion with pyHyp

  • ADflow analysis for overset meshes

About this tutorial

This tutorial was written by David Anderegg and Anil Yildirim. David Anderegg is employed by ZHAW in Switzerland at the time this tutorial was published. Most of the material in the overset theory section is based on the materials from Ney Secco.

References

O1

ONERA M6 Wing. URL: https://www.grc.nasa.gov/WWW/wind/valid/m6wing/m6wing.html.

O2

3D ONERA M6 Wing validation for turbulence model numerical analysis. URL: https://turbmodels.larc.nasa.gov/onerawingnumerics_val.html.

O3

3D ONERA M6 Wing validation for turbulence model numerical analysis - SA-neg model results. URL: https://turbmodels.larc.nasa.gov/onerawingnumerics_val_sa.html (visited on 2020-12-11).