Category
Function
Generates magnetic lobe volumes on the LFM grid.
Syntax
LobeField = MakeLobes(All MHD Scalars (out of readmhdhdf)); MakeLobes is a macro, and has no corresponding scripting syntax.
Inputs
Name | Type | Default | Description |
---|---|---|---|
AllMHDScalars | field | none | Field of all MHD scalars (out of the first output of readmhdhdf*) |
Outputs
Name | Type | Description |
---|---|---|
Lobes | field | Field of positions where the "data" values are either 1 (true==lobe) or 0 (false == not lobe). |
Functional Details
Takes the LFM scalar parameters (out of the first output tab of the readmhdhdf* series of
modules) and uses those scalar parameters to determine where the nominal LFM lobes
are defined. The output is a field of positions (those in the entire LFM grid) associated
with one boolean (1 or 0, true or false) data value which signifies whether that point
is in the lobes.
The lobes are defined (in this macro) as the cells where the density is less than
0.2 particles per cubic centimeter, and the thermal pressure is less than 0.01
nPascals. These are fairly arbitrary limits, as there are no common plasma limits
which identify the lobes inthe literature.
INPUT | takes the MHD scalars from the first output of readmhdhdf* |
OUTPUT | returns a field with a boolean data component of "in plasma sheet" |
Example Visual Programs
5MakePlasmaSheet.net
The following image is a screen shot of the output from the example network 5MakePlasmaSheet.net, when the option for selecting the Lobes Only is chosen. The network takes the output of the MakeLobes module and makes a white isosurface around the points considered in the magnetic lobes.![]()
See Also
[ OpenDX Home at IBM | OpenDX.org ]