FlexPDE allows the definition of mesh-moving equations, and applies an Arbitrary Lagrange/Eulerian (ALE) formulation. This allows several optional behaviors:
- By locking the mesh to the fluid velocity, you can create a fully Lagrangian model.
- Or, you can define a relaxive mesh within moving boundaries to maintain mesh integrity.
- Or, by omitting the mesh moving equations, you can perform a fully Eulerian computation.
In any case, FlexPDE automatically corrects the PDE system to represent the motion of the mesh.
The problem shown
here computes the motion of a gas in a compressor
cylinder.
Animations |
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Mesh |
Gas Pressure |
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(All animations are FlexPDE native graphical output, assembled into a movie by APNG Maker)