/usr/include/liggghts/fix_ave_euler.h is in libliggghts-dev 3.7.0+repack1-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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This is the
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╚══════╝╚═╝ ╚═════╝ ╚═════╝ ╚═════╝ ╚═╝ ╚═╝ ╚═╝ ╚══════╝®
DEM simulation engine, released by
DCS Computing Gmbh, Linz, Austria
http://www.dcs-computing.com, office@dcs-computing.com
LIGGGHTS® is part of CFDEM®project:
http://www.liggghts.com | http://www.cfdem.com
Core developer and main author:
Christoph Kloss, christoph.kloss@dcs-computing.com
LIGGGHTS® is open-source, distributed under the terms of the GNU Public
License, version 2 or later. It is distributed in the hope that it will
be useful, but WITHOUT ANY WARRANTY; without even the implied warranty
of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. You should have
received a copy of the GNU General Public License along with LIGGGHTS®.
If not, see http://www.gnu.org/licenses . See also top-level README
and LICENSE files.
LIGGGHTS® and CFDEM® are registered trade marks of DCS Computing GmbH,
the producer of the LIGGGHTS® software and the CFDEM®coupling software
See http://www.cfdem.com/terms-trademark-policy for details.
-------------------------------------------------------------------------
Contributing author and copyright for this file:
(if not contributing author is listed, this file has been contributed
by the core developer)
Copyright 2012- DCS Computing GmbH, Linz
Copyright 2009-2012 JKU Linz
------------------------------------------------------------------------- */
#ifdef FIX_CLASS
FixStyle(ave/euler,FixAveEuler)
FixStyle(ave/euler/stress,FixAveEuler)
#else
#ifndef LMP_FIX_AVE_EULER_H
#define LMP_FIX_AVE_EULER_H
#include <stdio.h>
#include "fix.h"
#include "vector_liggghts.h"
namespace LAMMPS_NS {
class FixAveEuler : public Fix {
public:
FixAveEuler(class LAMMPS *, int, char **);
~FixAveEuler();
void post_create();
int setmask();
void init();
void setup(int vflag);
void end_of_step();
double compute_array(int i, int j);
int ncells_pack();
// inline access functions for cell based values
inline double cell_center(int i, int j)
{ return center_[i][j]; }
inline double cell_v_av(int i, int j)
{ return v_av_[i][j]; }
inline double cell_vol_fr(int i)
{ return vol_fr_[i]; }
inline double cell_radius(int i)
{ return radius_[i]; }
inline double cell_pressure(int i)
{ return stress_[i][0]; }
inline double cell_stress(int i,int j)
{ return stress_[i][j+1]; }
private:
inline int ntry_per_cell()
{ return 50; }
void setup_bins();
void bin_atoms();
void calculate_eu();
void allreduce();
inline int coord2bin(double *x);
bool parallel_;
int exec_every_;
bool box_change_size_, box_change_domain_;
int triclinic_;
// desired cell size over max particle diameter
double cell_size_ideal_rel_;
// desired cell size
double cell_size_ideal_;
double cell_size_ideal_lamda_[3];
// number of cells, either globally or locally on each proc
int ncells_, ncells_dim_[3];
// extent of grid in xyz, either globally or locally on each proc
double lo_[3],hi_[3];
double lo_lamda_[3],hi_lamda_[3];
// cell size and inverse size in xyz, cell and volume
double cell_size_[3];
double cell_size_inv_[3];
double cell_volume_;
double cell_size_lamda_[3];
double cell_size_lamda_inv_[3];
// length of cellhead_, center_, v_av_, vol_fr_ arrays
int ncells_max_;
// length of cellptr_ array
int ncellptr_max_;
// atom - cell mapping
int *cellhead_; // ptr to 1st atom in each cell
int *cellptr_; // ptr to next atom in each bin
// region
char *idregion_;
class Region *region_;
/* --------- DATA --------- */
// cell center
double **center_;
// cell-based averaged velocity
double **v_av_;
// cell-based volume fraction
double *vol_fr_;
// cell-based weight for each cell
double *weight_;
// cell-based average radius
double *radius_;
// cell-based number of particles
int *ncount_;
// cell-based mass
double *mass_;
// cell-based stress
// [0]: pressure
// [1-3]: 00-11-22
// [4-6]: 01-02-12
double **stress_;
// stress computation
class ComputeStressAtom *compute_stress_;
class RanPark *random_;
};
}
#endif
#endif
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