Gallery

Fusion Ignition

On August 8th 2021, an experiment at Lawrence Livermore National Laboratory's National Ignition Facility (NIF) made a significant step toward ignition, achieving a yield of more than 1.3 megajoules (MJ).

The output of neutrons was measured in 3 locations resulting in 3 2D scalar fields from which scientists at LANL reconstructed the underlying 3D distribution. Based on the reconstruction method and the recording system, different 3D reconstructions of the same experiment are possible we try to understand the differences.

Dipole

This visualization was chosen as the cover of the book "Modeling, Analysis, and Visualization of Anisotropy" by Thomas Schultz, Evren Özarslan, Ingrid Hotz.

It shows a 3D dipole vector field pattern visualized with stream tubes color coded by integration time.

Aluminum Impact

A spherical aluminum projectile impacts an aluminum half-space at a 45 degree angle. This is a frequently used setup to test a code’s ability to model terrestrial materials and the initial stages of crater formation. Similar impact tests are also performed experimentally to e.g. understand the consequences of collisions of space debris with a spacecraft

Cloverleaf

Ascent is a many-core capable flyweight in situ visualization and analysis infrastructure for multi-physics HPC simulations. It comes with the proxy-application CloverLeaf3D from the Atomic Weapons Establishment (AWE). It is visualized with isosurfaces and streamlines.

Particle

Accelerator

Streamlines in the magnetic field were densely seeded along the axis of strongest symmetry in a WarpX simulation. The integration time is encoded in the diameter of the streamtubes and through color. Forward integration is represented through the warm colors and backward integration through the cold colors.

The visualization reveals the quickly alternating orientations of the magnetic field along the z-axis. Please note the big changes of the strength of the magnetic field. There are two patches close to the seeding line where the field is very strong. This results in fast progression of the streamlines without integration time passing, which can be seen as the white areas. Outside these region, the field drops down quickly and the streamlines stagnate. Even for very long integration time, they do not reach a closed form.

Hydrodynamic Fracturing

Vector field topology of a simulation of hydrodynamic fracturing or fracking produced by Dan O'Malley at LANL. The topological skeleton segemnts the domain into regions of coherent flow behavior that indicate which areas are drained by the well and which are not.

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