Movie Gallery
- Multi-material Simulations
-
Shock Wave Passing through a Material Interface:
Simple multi-material ALE simulation - piston compressing fluid generates a shock wave
passing through a material interface.
Reflected and transmitted waves can be seen in
density colormap,
cut in density, and
density schlieren image.
-
Multi-material Triple Point:
Movie shows an Eulerian (Lagrange + remap)
simulation of triple-material vortex problem.
High-pressure red material creates a shock wave propagating into low pressure
blue and green materials. Different material properties cause faster shock propagation
in the blue material resulting in the central vortex formation.
The thin green material filament demonstrates robustness of the incorporated methods,
it stays compact and does not break apart.
- Multi-material Mesh Untangling
-
Untangling of Multi-material Computational Mesh using Feasible Set Approach:
Tangled three material mesh (forming a T-junction) untagled by a feasible set method
with a halo extension is shown in the following
movie.
The mesh is logically-orthogonal, and includes material interfaces and degenerate nodes.
In the first sweep, most of the tangled nodes are fixed, with the exception of
the upper-left region, which is untangled by the halo extension.
Finally, the feasible set approach is used as a mesh smoother to
increase the geometric quality of the entire mesh.
-
Fluid Jet through a Hole:
ALE20 multi-material simulation of a high-pressure red fluid jet into a low-pressure
blue fluid through a hole in the gray wall.
The movie compares a standard ALE simulation
with an ALE simulation supported by the mesh untangling.
The pure ALE simulations fails due to severe mesh distortion close to the hole boundary
while the untangling approach allows the simulation to continue till pressure equilibrium.
- Remap
-
Voronoi Mesh Motion:
Motion of Voronoi mesh generators with a given stream velocity fiels.
This mesh motion
is used for demontration of swept remap for meshes with changing connectivity.
- Simulations of Laser-plasma Interactions
- Laser-flyer Interaction:
Movie
of light Aluminum disc flyer irradiated by intense laser beam,
computational mesh and Aluminum density shown.
The disc is ablativly accelerated until it hits the surface of
the massive Aluminum target represented by the green line.
- Laser-flyer Interaction - Zoom:
Movie
shows zoom on the interesting region of the Aluminum disc ablative
acceleration problem.
The evaporated and accelerated impacting disc can be see as the high
density region.
Computational mesh and Aluminum density is shown.
- High-velocity Impact:
Movie
shows comparison of Lagrangian and ALE simulation of initial phase
of the disc impact on a massive Aluminum target.
Result from the previous acceleration simulation is interpolated on
a new mesh to create the initial data for the impact simulation.
Lagrangian simulation fails in the early stages, the ALE simulation
can continue.
- Crater Formation:
Movie
shows computational mesh and fluid temperature in the impact simulation
of the light flyer on the massive Aluminum target.
Target is heated, melted, and evaporated by the spreading shock wave,
the evaporated fluid forms an upward moving jet.
- Crater Formation - Zoom:
Movie
shows zoom on the crater region of the impact simulation.
Different colormaps show different material phases.
The crater is shown by the liquid-gass interface.
Computational mesh and material temperature are shown.
- Massive particle acceleration in a channel
Movie in PDF (Adobe Acrobat Reader required)
shows various simulations related to laser absorption, flyer acceleration,
impact on massive target, shock wave formation and spreading, and crated development.
All movies shown material density (in g/cm²) except the last movie,
showing material temperature (in eV).
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