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Name

quadforce - quadrupole-order force calculation of an N-body system.

Synopsis

quadforce in=snapshot [parameter=value] ...

Description

quadforce computes a quadrupole-order force calculation of a snapshot N-body system. (see also quadcode(1NEMO) ). The output can be either in the form of the snapshot, or a table, in which case quadrupole-oder forces can be inserted in other snapshots (see quadinter(1NEMO) ).

Parameters

The following parameters are recognized in any order if the keyword is also given:
in=snaphot
Input file with N-body snapshot. No default.
out=
Optional snapshot output file with forces and potentials. This output is optional.
quad=
Output file with quadrupole field tables. This output is optional.
eps_r=
Radial softening parameter. [Default: 0.05]
eps_t=
Tangential softening parameter. [Default: 0.07]

Limitations

The code has a hardcoded maximum number of particles, through the macro MBODY. (currently 4096). If more are needed, it needs to be recompiled. See comments in quadcode(1NEMO)

Author

Joshue Barnes

See Also

quadcode(1NEMO) , quadinter(1NEMO)

Update History


4-mar-89    V1.0 Old version    JEB
12-nov-91    V1.1 FOr new nemo V2.    PJT
6-may-92    V1.1a man page written, added some warnings    PJT


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