Chapter 21: Virtual Eulerian Surface Bodies

An initial prototype, which exposes the use of (Virtual) Eulerian surface bodies in the Explicit Dynamics analysis system, is available through the Euler Enhancements beta feature flag. To set up this flag in Workbench, follow these steps:

  1. Open the Tools > Options dialog.

  2. Check the box next to the option in the Mechanical tab.

  • Two different (Virtual) Eulerian surface body options are supported for mapping material and initial conditions into 3D Euler:

    • Volume filling of the Eulerian domain, using closed single connected surface bodies

    • Directional filling of the Eulerian domain, using surface bodies with a defined filling direction

Mapping of Surface Bodies with Euler Reference Frame to Virtual Euler Domain

  • The standard mesh, which is generated on surface bodies marked with Eulerian (virtual) reference frame, is only used to represent the geometry of the surface body during initialization of the model for the solver. The material and initial conditions defined on surface bodies, which are marked as an Eulerian reference frame, are mapped to the Euler domain. The mesh associated with the original surface body is then deleted, prior to the solve. A unique material is created for each surface body that is mapped into the Euler domain for post processing.

  • If multiple solid and surface bodies marked as Eulerian overlap, the body higher in the Outline view will take precedence. Therefore, the material assigned to the region of overlap will correspond with the material assigned to the first Eulerian body.