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Visualization of the thermal flux of a 116-group large-scale neutron transport simulation. The simulation does not apply "hanging" nodes but uses degenerate polyhedrons.

Visualization of the thermal flux of a 116-group large-scale neutron transport simulation. The simulation does not apply "hanging" nodes but uses degenerate polyhedrons.

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Figure 1: Example shape function application on a triangle,...
Figure 2: Composition of the piecewise linear shape functions on...
Figure 3: The first 6 stages of a sweep operating on an unstructured 2D...
Figure 4: Pipe fill and drain phenomenon associated with a P x -P y...
+3 Figure 5: Graphical depiction of the "lockbox" concept.
Massively Parallel Transport Sweeps on Meshes with Cyclic Dependencies
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  • Apr 2020
When solving the first-order form of the linear Boltzmann equation, a common misconception is that the matrix-free computational method of ``sweeping the mesh", used in conjunction with the Discrete Ordinates method, is too complex or does not scale well enough to be implemented in modern high performance computing codes. This has led to considerab...
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Context 1
... visualization of a sample large scale simulation is shown in Figure 6 below. The simulation modeled an experiment used in an uncertainty quantification study by Texas A&M's Center for Exascale Radiation Transport [40], and contained a large amounts of thermalizing material which included graphite, high density polyethylene (HDPE) and borated HDPE. ...
Context 2
... visualization of a sample large scale simulation is shown in Figure 6 below. The simulation modeled an experiment used in an uncertainty quantification study by Texas A&M's Center for Exascale Radiation Transport [40], and contained a large amounts of thermalizing material which included graphite, high density polyethylene (HDPE) and borated HDPE. ...