#include "list/list.h"
-/* datatypes */
+/*
+ *
+ * datatypes
+ *
+ */
+/* general */
typedef unsigned char u8;
/* the atom of the md simulation */
-
typedef struct s_atom {
t_3dvec r; /* position */
t_3dvec v; /* velocity */
#define ATOM_ATTR_3BP 0x40 /* 3 body potential */
/* cell lists */
-
typedef struct s_linkcell {
int nx,ny,nz; /* amount of cells in x, y and z direction */
int cells; /* total amount of cells */
#include "visual/visual.h"
-# moldyn structure */
+/* moldyn schedule structure */
+typedef struct s_moldyn_schedule {
+ int content_count;
+ int *runs;
+ double *tau;
+ int (*hook)(void *moldyn,void *hook);
+ void *hook_params;
+} t_moldyn_schedule;
+/* moldyn main structure */
typedef struct s_moldyn {
-
int count; /* total amount of atoms */
t_atom *atom; /* pointer to the atoms */
t_3dvec dim; /* dimensions of the simulation volume */
/* potential force function and parameter pointers */
- int (*pf_func1b)(struct s_moldyn *,t_atom *);
+ int (*func1b)(struct s_moldyn *moldyn,t_atom *ai);
void *pot1b_params;
- int (*pf_func2b)(struct s_moldyn *,t_atom *,t_atom *);
+ int (*func2b)(struct s_moldyn *moldyn,t_atom *ai,t_atom *aj,u8 bc);
void *pot2b_params;
- int (*pf_func3b)(struct s_moldyn *,t_atom *,t_atom *,t_atom *);
+ int (*func3b)(struct s_moldyn *moldyn,t_atom *ai,t_atom *aj,t_atom *ak,
+ u8 bck);
void *pot3b_params;
//int (*potential_force_function)(struct s_moldyn *moldyn);
double cutoff; /* cutoff radius */
double cutoff_square; /* square of the cutoff radius */
+ double nnd; /* nearest neighbour distance (optional) */
- t_linkcell lc; /* linked cell method */
+ t_linkcell lc; /* linked cell list interface */
double t; /* temperature */
+ /* simulation schedule */
+ t_moldyn_schedule schedule;
+ int current; /* current position in schedule */
+
/* integration function pointer */
int (*integrate)(struct s_moldyn *moldyn);
int time_steps; /* amount of iterations */
double tau; /* delta t */
+ double time; /* absolute time */
double tau_square; /* delta t squared */
+ double elapsed; /* total elapsed time */
- double energy; /* energy */
+ double energy; /* potential energy */
+ double ekin; /* kinetic energy */
t_visual vis; /* visualization/log/save interface structure */
- u8 lvstat; /* log & vis properties */
+ u8 lvstat; /* log & vis properties */
unsigned int ewrite; /* how often to log energy */
- char efb[64]; /* energy log filename */
int efd; /* fd for energy log */
unsigned int mwrite; /* how often to log momentum */
- char mfb[64]; /* momentum log filename */
int mfd; /* fd for momentum log */
unsigned int vwrite; /* how often to visualize atom information */
char vfb[64]; /* visualization file name base */
- void *visual; /* pointer (hack!) */
+ //void *visual; /* pointer (hack!) */
unsigned int swrite; /* how often to create a save file */
+ char sfb[64]; /* visualization file name base */
- u8 status; /* general moldyn properties */
+ u8 status; /* general moldyn properties */
t_random random; /* random interface */
} t_moldyn;
-#define MOLDYN_LVSTAT_TOTAL_E 0x01
-#define MOLDYN_LVSTAT_TOTAL_M 0x02
-#define MOLDYN_LVSTAT_SAVE 0x04
-#define MOLDYN_LVSTAT_VISUAL 0x08
-#define MOLDYN_LVSTAT_INITIALIZED 0x10
-
#define MOLDYN_STAT_PBX 0x08 /* periodic boudaries in x */
#define MOLDYN_STAT_PBY 0x10 /* y */
#define MOLDYN_STAT_PBZ 0x20 /* and z direction */
+#define MOLDYN_1BP 0x00 /* care about single */
+#define MOLDYN_2BP 0x01 /* 2 body */
+#define MOLDYN_3BP 0x02 /* and 3 body particle pots */
+
+#define VSCALE_INIT_EQUI 0x00 /* initial, eq positions */
+#define VSCALE_BERENDSEN 0x01 /* berendsen control */
+
+
+/*
+ *
+ * potential parameter structures
+ *
+ */
+
+/*
+ * harmonic oscillator potential parameter structure
+ */
+
typedef struct s_ho_params {
double spring_constant;
double equilibrium_distance;
} t_ho_params;
+/*
+ * lennard jones potential parameter structure
+ */
+
typedef struct s_lj_params {
double sigma6;
double sigma12;
double epsilon4;
} t_lj_params;
-typedef struct s_tersoff_params {
+/*
+ * tersoff
+ */
+
+/* tersoff exchange structure to exchange 2bp and 3bp calculated values */
+typedef struct s_tersoff_exchange {
+ double f_c,df_c;
+ double f_a,df_a;
+
+ t_3dvec dist_ij;
+ double d_ij;
+ double d_ij2;
+
+ double chi;
+
+ double *B;
+ double *mu;
+
+ double *beta;
+ double *n;
+ double *c;
+ double *d;
+ double *h;
+
+ double c2;
+ double d2;
+ double c2d2;
+ double betan;
+
+ u8 run3bp;
+} t_tersoff_exchange;
+
+/* tersoff multi (2!) potential parameters */
+typedef struct s_tersoff_mult_params {
double S[2]; /* tersoff cutoff radii */
double R[2]; /* tersoff cutoff radii */
- double Smixed /* mixed S radius */
- double Rmixed /* mixed R radius */
+ double Smixed; /* mixed S radius */
+ double Rmixed; /* mixed R radius */
+ double A[2]; /* factor of tersoff attractive part */
+ double B[2]; /* factor of tersoff repulsive part */
+ double Amixed; /* mixed A factor */
+ double Bmixed; /* mixed B factor */
+ double lambda[2]; /* tersoff lambda */
+ double lambda_m; /* mixed lambda */
+ double mu[2]; /* tersoff mu */
+ double mu_m; /* mixed mu */
+
+ double chi;
+
+ double beta[2];
+ double n[2];
+ double c[2];
+ double d[2];
+ double h[2];
+
+ t_tersoff_exchange exchange; /* exchange between 2bp and 3bp calc */
+} t_tersoff_mult_params;
+
- double l_1,l_2;
- double m_1,m_2;
- double a_1,a_2;
- double b_1,b_2;
- double r_1,r_2;
- double s_1,s_2;
-} t_tersoff_params;
/*
+ *
* defines
+ *
*/
-/* general defines */
+/* default values */
#define MOLDYN_TEMP 273.0
#define MOLDYN_TAU 1.0e-15
-#define MOLDYN_CUTOFF 10.0e-9
+#define MOLDYN_CUTOFF 1.0e-9
#define MOLDYN_RUNS 1000000
+#define MOLDYN_CRITICAL_EST_TEMP 5.0
+
#define MOLDYN_INTEGRATE_VERLET 0x00
#define MOLDYN_INTEGRATE_DEFAULT MOLDYN_INTEGRATE_VERLET
#define MOLDYN_POTENTIAL_HO 0x00
#define MOLDYN_POTENTIAL_LJ 0x01
-#define MOLDYN_POTENTIAL_DEFAULT MOLDYN_POTENTIAL_LJ
+#define MOLDYN_POTENTIAL_TM 0x02
+
+#define LOG_TOTAL_ENERGY 0x01
+#define LOG_TOTAL_MOMENTUM 0x02
+#define SAVE_STEP 0x04
+#define VISUAL_STEP 0x08
-/* phsical values */
+#define TRUE 1
+#define FALSE 0
+
+/*
+ *
+ * phsical values / constants
+ *
+ */
#define K_BOLTZMANN 1.3807e-27 /* Nm/K */
#define AMU 1.660540e-27 /* kg */
#define LJ_SIGMA_SI ((0.25*sqrt(3.0)*LC_SI)/1.122462) /* m */
#define LJ_EPSILON_SI (2.1678*1.60e-19) /* Nm */
-/* function prototypes */
-int moldyn_usage(char **argv);
-int moldyn_parse_argv(t_moldyn *moldyn,int argc,char **argv);
-int moldyn_log_init(t_moldyn *moldyn);
+/*
+ *
+ * function prototypes
+ *
+ */
+
+typedef int (*pf_func1b)(t_moldyn *,t_atom *ai);
+typedef int (*pf_func2b)(t_moldyn *,t_atom *,t_atom *,u8 bc);
+typedef int (*pf_func3b)(t_moldyn *,t_atom *,t_atom *,t_atom *,u8 bc);
+
int moldyn_init(t_moldyn *moldyn,int argc,char **argv);
int moldyn_shutdown(t_moldyn *moldyn);
-int create_lattice(u8 type,int element,double mass,double lc,
- int a,int b,int c,t_atom **atom);
-int destroy_lattice(t_atom *atom);
+int set_int_alg(t_moldyn *moldyn,u8 algo);
+int set_cutoff(t_moldyn *moldyn,double cutoff);
+int set_temperature(t_moldyn *moldyn,double t);
+int set_dim(t_moldyn *moldyn,double x,double y,double z,u8 visualize);
+int set_nn_dist(t_moldyn *moldyn,double dist);
+int set_pbc(t_moldyn *moldyn,u8 x,u8 y,u8 z);
+int set_potential1b(t_moldyn *moldyn,pf_func1b func,void *params);
+int set_potential2b(t_moldyn *moldyn,pf_func2b func,void *params);
+int set_potential3b(t_moldyn *moldyn,pf_func3b func,void *params);
+
+int moldyn_set_log(t_moldyn *moldyn,u8 type,char *fb,int timer);
+int moldyn_log_shutdown(t_moldyn *moldyn);
+
+int create_lattice(t_moldyn *moldyn,u8 type,double lc,int element,double mass,
+ u8 attr,u8 bnum,int a,int b,int c);
+int add_atom(t_moldyn *moldyn,int element,double mass,u8 bnum,u8 attr,
+ t_3dvec *r,t_3dvec *v);
+int destroy_atoms(t_moldyn *moldyn);
+
int thermal_init(t_moldyn *moldyn);
-int scale_velocity(t_moldyn *moldyn);
-double get_e_kin(t_atom *atom,int count);
+int scale_velocity(t_moldyn *moldyn,u8 type);
+
+double get_e_kin(t_moldyn *moldyn);
double get_e_pot(t_moldyn *moldyn);
double get_total_energy(t_moldyn *moldyn);
-t_3dvec get_total_p(t_atom *atom,int count);
+t_3dvec get_total_p(t_moldyn *moldyn);
-double estimate_time_step(t_moldyn *moldyn,double nn_dist,double t);
+double estimate_time_step(t_moldyn *moldyn,double nn_dist);
int link_cell_init(t_moldyn *moldyn);
int link_cell_update(t_moldyn *moldyn);
int link_cell_neighbour_index(t_moldyn *moldyn,int i,int j,int k,t_list *cell);
int link_cell_shutdown(t_moldyn *moldyn);
+int moldyn_add_schedule(t_moldyn *moldyn,int runs,double tau);
+int moldyn_set_schedule_hook(t_moldyn *moldyn,void *hook,void *hook_params);
+
int moldyn_integrate(t_moldyn *moldyn);
int velocity_verlet(t_moldyn *moldyn);
-int harmonic_oscillator(t_moldyn *moldyn);
-int lennard_jones(t_moldyn *moldyn);
+int potential_force_calc(t_moldyn *moldyn);
+int check_per_bound(t_moldyn *moldyn,t_3dvec *a);
+int harmonic_oscillator(t_moldyn *moldyn,t_atom *ai,t_atom *aj,u8 bc);
+int lennard_jones(t_moldyn *moldyn,t_atom *ai,t_atom *aj,u8 bc);
+int tersoff_mult_1bp(t_moldyn *moldyn,t_atom *ai);
+int tersoff_mult_2bp(t_moldyn *moldyn,t_atom *ai,t_atom *aj,u8 bc);
+int tersoff_mult_3bp(t_moldyn *moldyn,t_atom *ai,t_atom *aj,t_atom *ak,u8 bc);
#endif
projects / physik / posic.git / blobdiff