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Name

mkjet - create a toy model for a jet

Synopsis

mkjet out=snapshot [parameter=value]

Description

mkjet creates a toy model of a jet, with particles distributed uniformely along a cone with given (constant) opening angle theta. The outflow velocity can be varied using an expansion curve, that gives expansion velocity as function of radius.

Parameters

The following parameters are recognized in any order if the keyword is also given:
out=
Output snapshot file name. No default./
nbody=
Number of particles. [Default: 256].
theta=
(full) Opening angle of jet, in degrees. Default: 10.
r=
Sample radii along jet. A number of radii have to be given, for which expansion velocities will have to be given.
v=
Expansion velocities along jet radii, as given by rad=. Each radius must have a matching velocity, although if fewer velocities are given, the last ones are simply repeated.
rmin=
Inner radius if the jet. [Default: 0].
rmax=
Outer radius of the jet. [Default: 2].
nmodel=
Number of models to write. [Default: 1].
seed=
Random seed. 0 is taken as the current time of the day, and as such a good choice for fully random samples. [Default: 0]
headline=
Random verbiage added to the snapshot . By default none.

Example

Since there is no table input for the radial expansion curve yet, you have to provide a series of radii and velocities through the r= and v= keywords. Although it requires you to use two temporary files, one for each column, the following NEMO shortcut may be handy in this case (assuming you have a table with radius and velocity in the first two columns)
    tabmath table1 tab.r %1 all
    tabmath table1 tab.v %2 all
    mkjet ....  r=@tab.r v=@tab.v

See Also

snapshot(5NEMO)

Files

(still private)

Author

Peter Teuben

Update History


29-mar-96    V0.1 Created     PJT


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