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LSP Description Particle-in-Cell (PIC) code for Large Scale Plasma Simulations |
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“Dedicated
to Excellence in Innovation, Research, and Partnership” Description
Both explicit and direct-implicit electromagnetic field and particle-advancing algorithms are available. Algorithms are also implemented for field emission, transmission-line boundaries, dielectrics, dispersive magnetic materials, secondary electron generation, multiple scattering, ionization of neutrals, surface heating, and desorption of neutrals from surfaces. A hybrid fluid model for electrons has been implemented, allowing electrons in dense plasmas to be modeled with a kinetic or fluid treatment as appropriate. Memory allocation for both fields and particles is fully dynamic. The code saves on memory by not allocating field storage inside of conducting surfaces. An array of pointers is used to access field quantities. The particles are managed in groups, and groups are added as needed as the population increases. LSP particle and field data files are written in XDR format, allowing binary data to be written, e.g., on a multi-processor Unix machine and viewed on, e.g., a PC or Macintosh. The history data file is an ASCII text file, and so is also portable. The P4 postprocessor, written in the cross-platform IDL language, is used to analyze output. The GLSP preprocessor allows LSP input files to be generated graphically. Supported Platforms: Windows 2000/NT/98, Linux, UNIX, Mac OS X
(Thumbnails of LSP screenshots, click, to enlarge.)
Features:
(Thumbnails of GLSP screenshots,
click to enlarge.)
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LSP is a 3-D (as
well as 2-D and 1-D) electromagnetic code for large-scale
electromagnetic plasma simulations using the particle-in-cell
method. The code runs on parallel as well as serial computers.
On a parallel machine, domain decomposition with message-passing is
used to divide the computational load among the processors. A
unified decomposition of fields and particles is used, i.e. the
particles reside on the same processor as the cells they occupy.
The standard
GLSP is a graphical preprocessor for LSP. It allows complete
specification of a calculation and 3D visualization of the spatial
elements. An LSP simulation can be launched from GLSP, or the input
data can be exported to a remote machine (using a built-in FTP
client). The graphical postprocessor can also be launched from GLSP.
GLSP is written with C and Tcl/Tk and uses OpenGL to render the
objects in 3D space. GLSP is a full-featured program that runs
independantly from LSP.
P4 is a 3D post-processor for LSP. It is used to view and
print the History, Particle, Vector, and Scalar dumps from LSP. It
can also generate Particle and Scalar movies in multiple formats,
which can be viewed with, e.g. a web browser or
