Eulerian Mesh Motion

In a traditional Eulerian analysis, material flows through an Eulerian mesh that is fixed in space. Since it is stationary, the Eulerian mesh must be large enough to enclose the entire trajectory of interest. In some simulations, such as a tumbling liquid-filled bottle, this trajectory can be long, requiring a large Eulerian mesh whose elements are mostly empty. The Eulerian mesh motion feature allows the Eulerian mesh to move in space, following, expanding, and contracting to enclose a target object. This can greatly reduce mesh size and, hence, simulation cost. Mesh motion can also simplify modeling by ensuring that the entire trajectory of interest, which may be unpredictable, is indeed covered by the Eulerian mesh.

This page discusses:

See Also
Eulerian Analysis
In Other Guides
Eulerian Surface Definition
*EULERIAN MESH MOTION
*EULERIAN SECTION
*SURFACE
Defining an Eulerian mesh motion boundary condition

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