X-Git-Url: https://www.hackdaworld.org/gitweb/?a=blobdiff_plain;f=moldyn.h;h=32025fd39a687306a0cb7edb9fb93c7301733937;hb=0acbade9c8d1ed354c333955dc2c5575540a9236;hp=a76b3b4f804c9ad83bad01ab0b445b65066b5b1d;hpb=d3d65b8212c02f787a16cb312bf08b7712e89550;p=physik%2Fposic.git

diff --git a/moldyn.h b/moldyn.h
index a76b3b4..32025fd 100644
--- a/moldyn.h
+++ b/moldyn.h
@@ -36,9 +36,9 @@ typedef struct s_atom {
 #define ATOM_ATTR_FP	0x01	/* fixed position (bulk material) */
 #define ATOM_ATTR_HB	0x02	/* coupled to heat bath (velocity scaling) */
 
-#define ATOM_ATTR_1BP	0x10	/* single paricle potential */
-#define ATOM_ATTR_2BP	0x20	/* pair potential */
-#define ATOM_ATTR_3BP	0x40	/* 3 body potential */ 
+#define ATOM_ATTR_1BP		0x10	/* single paricle potential */
+#define ATOM_ATTR_2BP		0x20	/* pair potential */
+#define ATOM_ATTR_3BP		0x40	/* 3 body potential */ 
 
 /* cell lists */
 typedef struct s_linkcell {
@@ -48,17 +48,16 @@ typedef struct s_linkcell {
 	double x,y,z;		/* the actual cell lengthes */
 	t_list *subcell;	/* pointer to the cell lists */
 	int dnlc;		/* direct neighbour lists counter */
-	int countn;		/* amount of neighbours */
 } t_linkcell;
 
 #include "visual/visual.h"
 
-# moldyn schedule structure */
+/* moldyn schedule structure */
 typedef struct s_moldyn_schedule {
 	int content_count;
 	int *runs;
-	int *tau;
-	int (*hook)(t_moldyn *,void *);
+	double *tau;
+	int (*hook)(void *moldyn,void *hook);
 	void *hook_params;
 } t_moldyn_schedule;
 
@@ -70,20 +69,32 @@ typedef struct s_moldyn {
 	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);
+	int (*func2b_post)(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 */
+	double t_ref;		/* reference temperature */
+	double t;		/* actual temperature */
+
+	double p_ref;		/* reference pressure */
+	double p;		/* actual pressure */
+
+	/* pressure and temperature control (velocity/volume scaling) */
+	unsigned char pt_scale;	/* type of p and t scaling */
+	double t_tc;		/* t berendsen control time constant */
+	double p_tc;		/* p berendsen control time constant */
 
 	/* simulation schedule */
 	t_moldyn_schedule schedule;
@@ -93,39 +104,45 @@ typedef struct s_moldyn {
 	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 */
 	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 */
 
 	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
+	int debug;		/* debugging stuff, ignore */
+} t_moldyn;
 
 #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 T_SCALE_BERENDSEN		0x01	/* berendsen t control */
+#define T_SCALE_DIRECT			0x02	/* direct t control */
+#define P_SCALE_BERENDSEN		0x04	/* berendsen p control */
+#define P_SCALE_DIRECT			0x08	/* direct p control */
+
 
 /*
  *
@@ -159,16 +176,13 @@ typedef struct s_lj_params {
 /* 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;
@@ -179,8 +193,13 @@ typedef struct s_tersoff_exchange {
 	double d2;
 	double c2d2;
 	double betan;
+	double n_betan;
 
 	u8 run3bp;
+	u8 run2bp_post;
+
+	t_3dvec db_ij;
+	double zeta;
 } t_tersoff_exchange;
 
 /* tersoff multi (2!) potential parameters */
@@ -207,7 +226,7 @@ typedef struct s_tersoff_mult_params {
 	double h[2];
 
 	t_tersoff_exchange exchange;	/* exchange between 2bp and 3bp calc */
-} t_tersoff_params;
+} t_tersoff_mult_params;
 
 
 
@@ -224,6 +243,8 @@ typedef struct s_tersoff_mult_params {
 #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
 
@@ -231,10 +252,15 @@ typedef struct s_tersoff_mult_params {
 #define MOLDYN_POTENTIAL_LJ		0x01
 #define MOLDYN_POTENTIAL_TM		0x02
 
-#define MOLDYN_SET_POTENTIAL		0x00
-#define MOLDYN_SET_TEMPERATURE		0x01
-#define MOLDYN_SET_
-#define MOLDYN_SET_
+#define LOG_TOTAL_ENERGY		0x01
+#define LOG_TOTAL_MOMENTUM		0x02
+#define SAVE_STEP			0x04
+#define VISUAL_STEP			0x08
+
+#define TRUE				1
+#define FALSE				0
+
+#define ACCEPTABLE_ERROR		1e-15
 
 /*
  *
@@ -244,6 +270,7 @@ typedef struct s_tersoff_mult_params {
 
 #define K_BOLTZMANN		1.3807e-27			/* Nm/K */
 #define AMU			1.660540e-27			/* kg */
+#define EV			1.60217733e-19			/* Nm */
 
 #define FCC			0x01
 #define DIAMOND			0x02
@@ -255,7 +282,33 @@ typedef struct s_tersoff_mult_params {
 #define LC_SI			0.543105e-9				/* m */
 #define M_SI			(28.085*AMU)				/* 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 */
+#define LJ_EPSILON_SI		(2.1678*EV)				/* Nm */
+
+#define TM_R_SI			2.7e-10				/* m */
+#define TM_S_SI			3.0e-10				/* m */
+#define TM_A_SI			(1830.8*EV)			/* Nm */
+#define TM_B_SI			(471.18*EV)			/* Nm */
+#define TM_LAMBDA_SI		2.4799e10			/* 1/m */
+#define TM_MU_SI		1.7322e10			/* 1/m */
+#define TM_BETA_SI		1.1000e-6
+#define TM_N_SI			0.78734
+#define TM_C_SI			1.0039e5
+#define TM_D_SI			16.217
+#define TM_H_SI			(-0.59825)
+
+#define TM_R_C			1.8e-10				/* m */
+#define TM_S_C			2.1e-10				/* m */
+#define TM_A_C			(1393.6*EV)			/* Nm */
+#define TM_B_C			(346.7*EV)			/* Nm */
+#define TM_LAMBDA_C		3.4879e10			/* 1/m */
+#define TM_MU_C			2.2119e10			/* 1/m */
+#define TM_BETA_C		1.5724e-7
+#define TM_N_C			0.72751
+#define TM_C_C			3.8049e4
+#define TM_D_C			4.384
+#define TM_H_C			(-0.57058)
+
+#define TM_CHI_SIC		0.9776
 
 
 /*
@@ -264,33 +317,64 @@ typedef struct s_tersoff_mult_params {
  *
  */
 
-int moldyn_usage(char **argv);
-int moldyn_parse_argv(t_moldyn *moldyn,int argc,char **argv);
-int moldyn_log_init(t_moldyn *moldyn);
+typedef int (*pf_func1b)(t_moldyn *,t_atom *ai);
+typedef int (*pf_func2b)(t_moldyn *,t_atom *,t_atom *,u8 bc);
+typedef int (*pf_func2b_post)(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 thermal_init(t_moldyn *moldyn);
-int scale_velocity(t_moldyn *moldyn);
-double get_e_kin(t_atom *atom,int count);
+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_ref);
+int set_pt_scale(t_moldyn *moldyn,u8 ptype,double ptc,u8 ttype,double ttc);
+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_potential2b_post(t_moldyn *moldyn,pf_func2b_post 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,u8 equi_init);
+int scale_velocity(t_moldyn *moldyn,u8 equi_init);
+
+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_complete_params(t_tersoff_mult_params *p);
+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_post_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