Meshing, Pre and Post Processing

The aim of this course on meshing is to make students self-sufficient in the creation of geometry (CAD), and in the creation of meshing (structured, unstructured, hexahedral, tetrahedral, polyhedral, hybrid, boundary layer, surface mesh, etc.): basic concepts, role and importance of meshing and its quality in numerical simulation (including HPC), presentation of different meshing algorithms (front advance, empty sphere, etc.). The aim is for students to clearly understand what they are doing when using a mesher, and to critically analyze their meshing in terms of the solver they want to use and the physics to be solved.
The main mesh types (triangular and tetrahedral, quadrangular and hexahedral, hybrid, surface and volume, polyhedral, etc.) are detailed. The algorithms used in free (Salome, Gmsh) or commercial (Ansys tools, Simail) mesh generators are presented.
A set of rules and best practices for mesh generation is outlined, along with the quality criteria associated with different types of mesh.
Particular emphasis is placed on tips for formatting and enhancing the value of simulation results, in order to make the most of the results obtained in this course as well as in the BEI or later in their careers.

- Meshing course
 Introduction / Examples
 Numerical methods and meshes
 Triangular and tetrahedral meshing algorithms
 Quadrangular and hexahedral meshing algorithms
 Hybrid methods
 Surface meshes
 Polyhedral meshes
 Good meshing practices / Quality criteria
 General conclusion on meshes
 Meshes available at ENSEEIHT
 Geometry construction principles

VISU and POST-PROCESSING course
 Introduction
 Technical constraints (images and videos)
 Creating a quality video
 Quality visualization: pitfalls to avoid, formatting, content, making the most of results

- Commercial / free viewing software
 Viewing and post-processing tools available at ENSEEIHT

- TUTORIAL
- 4 hours working together on a subject with Salome, the project manager, to validate the basic concepts.
- Mini-projects: In pairs, students carry out mini-projects in which they choose the subject to be meshed (ramjet, arrow, triumphal arch, atmospheric re-entry module, submarine, airship, shell, platypus, etc.), the mesher (Salome, Gmsh, Ansys tools, StarCCM+, simail, comsol, etc.) they want to use and the solver (Code_Saturne, Ansys, StarCCM+, etc.). These mini-projects are assessed in an oral presentation. The meshes generated must have been run on the solver of their choice ...