r7.20.01 Projecting a field onto a mesh

Summary:

The PROJ_CHAMP command allows you to « project » fields (known on a \(\mathit{ma1}\) mesh) onto another \(\mathit{ma2}\) mesh.

In this document, the various projection methods available in this command are described. Paragraph [§ 6] gives some elements for validating these methods.

• 1. Overview of order PROJ_CHAMP
• 2. Method “COLLOCATION”
  • 2.1. Algorithm implemented
  • 2.2. The difficulties encountered and their treatment
  • 2.3. Details about steps 1 and 2
• 3. Method “NUAGE_DEG_0” or “NUAGE_DEG_1”
  • 3.1. Principle of the method
  • 3.2. Choosing the weighting of the cloud points
  • 3.3. Current programming restriction
• 4. Method “ECLA_PG”
• 5. Method “COUPLAGE”
• 6. Validation elements for projecting fields to nodes
  • 6.1. Method: “COLLOCATION”
  • 6.2. Method: “NUAGE_DEG_0”
  • 6.3. Method: “NUAGE_DEG_1”
  • 6.4. Choosing the best projection method for fields at nodes
• 7. Bibliography