Nautilus is a general purpose fluid plasma modeling code developed at Tech-X Corporation.
Nautilus currently supports shock capturing methods for:
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MHD
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Hall MHD
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Two-Fluid plasma
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Navier-Stokes
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Maxwell's equations
Multi-species and multi-temperature versions of these fluid systems are supported.
The equation systems can be solved body-fitted and unstructured grids in 1, 2 and 3 dimensions. Navier-Stokes and MHD models allow for user specified equations of state along with access to SESAME EOS tables (though tables must be obtained from LANL by the user). Nautilus has the ability to model the plasma device as part of a circuit.
Nautilus is massively parallel and has been run on up to 4000 processors on NERSC facilities. Nautilus is a multi-platform tool. Binaries for Nautilus can be generated for Windows, Mac OSX, and Linux.
Recent applications of Nautilus have included:
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modeling merging plasma jets
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laboratory accretion disk experiments
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weakly ionized hypersonic flow modeling
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magnetic nozzles and capillary discharges
Sample Model Images
Click on an image or a description title to see the corresponding full size image.
Used for re-entry vehicle simulation. Plots show number densities of each species in Mach 23 flow at 61km.
Image shows argon mass density from 6 merging off center jets. The jets form a spinning disk that winds up a magnetic field in a manner similar to astrophysical accretion disks.
The MHD equation are solved (in gas dynamic form) with an imposed magnetic field. The fluid follows the field lines and reaches Mach 1 near the “neck” of the magnetic nozzle.
Simulation shows the results.
For more information about Nautilus, contact sales@txcorp.com.