forked from lijiext/lammps
80 lines
2.1 KiB
Plaintext
80 lines
2.1 KiB
Plaintext
"LAMMPS WWW Site"_lws - "LAMMPS Documentation"_ld - "LAMMPS Commands"_lc :c
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:link(lws,http://lammps.sandia.gov)
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:link(ld,Manual.html)
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:link(lc,Section_commands.html#comm)
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:line
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pair_style sph/taitwater/morris command :h3
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[Syntax:]
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pair_style sph/taitwater/morris :pre
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[Examples:]
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pair_style sph/taitwater/morris
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pair_coeff * * 1000.0 1430.0 1.0 2.4 :pre
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[Description:]
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The sph/taitwater/morris style computes pressure forces between SPH
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particles according to Tait's equation of state:
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:c,image(Eqs/pair_sph_tait.jpg)
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where gamma = 7 and B = c_0^2 rho_0 / gamma, with rho_0 being the
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reference density and c_0 the reference speed of sound.
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This pair style also computes laminar viscosity "(Morris)"_#Morris.
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See "this PDF guide"_USER/sph/SPH_LAMMPS_userguide.pdf to using SPH in
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LAMMPS.
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The following coefficients must be defined for each pair of atoms
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types via the "pair_coeff"_pair_coeff.html command as in the examples
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above.
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rho0 reference density (mass/volume units)
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c0 reference soundspeed (distance/time units)
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nu dynamic viscosity (mass*distance/time units)
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h kernel function cutoff (distance units) :ul
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:line
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[Mixing, shift, table, tail correction, restart, rRESPA info]:
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This style does not support mixing. Thus, coefficients for all
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I,J pairs must be specified explicitly.
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This style does not support the "pair_modify"_pair_modify.html
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shift, table, and tail options.
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This style does not write information to "binary restart
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files"_restart.html. Thus, you need to re-specify the pair_style and
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pair_coeff commands in an input script that reads a restart file.
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This style can only be used via the {pair} keyword of the "run_style
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respa"_run_style.html command. It does not support the {inner},
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{middle}, {outer} keywords.
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[Restrictions:]
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This pair style is part of the USER-SPH package. It is only enabled
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if LAMMPS was built with that package. See the "Making
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LAMMPS"_Section_start.html#start_3 section for more info.
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[Related commands:]
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"pair_coeff"_pair_coeff.html, pair_sph/rhosum
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[Default:] none
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:line
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:link(Morris)
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[(Morris)] Morris, Fox, Zhu, J Comp Physics, 136, 214–226 (1997).
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