X-Git-Url: https://www.hackdaworld.org/gitweb/?a=blobdiff_plain;f=sic.c;h=5f50bd802440865c0585ff57e9f5395c35fa387c;hb=15dd7ee084a5db24a3e1a15428cd47e8d61fda5b;hp=9cb2c554f42c0d81e98e202ab12223d65c19b976;hpb=56fe12b9eabe0cfa493e2f1b1d0d7d219ae8705b;p=physik%2Fposic.git

diff --git a/sic.c b/sic.c
index 9cb2c55..5f50bd8 100644
--- a/sic.c
+++ b/sic.c
@@ -14,11 +14,7 @@
 
 #include "posic.h"
 
-#define TRUE 1
-#define FALSE 0
-
 int main(int argc,char **argv) {
-
 	/* main moldyn structure */
 	t_moldyn md;
 
@@ -27,11 +23,11 @@ int main(int argc,char **argv) {
 	t_ho_params ho;
 	t_tersoff_mult_params tp;
 
-	/* misc variables, mainly to initialize stuff */
-	t_3dvec r,v;
+	/* misc parameters */
+	double tau;
 
-	/* temperature */
-	double t;
+	/* values */
+	tau=1.0e-15;	/* delta t = 1 fs */
 
 	/* initialize moldyn */
 	printf("[sic] moldyn init\n");
@@ -43,10 +39,11 @@ int main(int argc,char **argv) {
 
 	/* choose potential */
 	printf("[sic] selecting potential\n");
-	//set_potential1b(&md,tersoff_mult_1bp,&tp);
-	//set_potential2b(&md,tersoff_mult_2bp,&tp);
-	//set_potential3b(&md,tersoff_mult_3bp,&tp);
-	set_potential2b(&md,lennard_jones,&lj);
+	set_potential1b(&md,tersoff_mult_1bp,&tp);
+	set_potential2b(&md,tersoff_mult_2bp,&tp);
+	set_potential2b_post(&md,tersoff_mult_post_2bp,&tp);
+	set_potential3b(&md,tersoff_mult_3bp,&tp);
+	//set_potential2b(&md,lennard_jones,&lj);
 
 	/*
 	 * potential parameters
@@ -62,13 +59,44 @@ int main(int argc,char **argv) {
 	ho.equilibrium_distance=0.25*sqrt(3.0)*LC_SI;
 	ho.spring_constant=1;
 
+	/*
+         * tersoff mult potential parameters for SiC
+	 */
+	tp.S[0]=TM_S_SI;
+	tp.R[0]=TM_R_SI;
+	tp.A[0]=TM_A_SI;
+	tp.B[0]=TM_B_SI;
+	tp.lambda[0]=TM_LAMBDA_SI;
+	tp.mu[0]=TM_MU_SI;
+	tp.beta[0]=TM_BETA_SI;
+	tp.n[0]=TM_N_SI;
+	tp.c[0]=TM_C_SI;
+	tp.d[0]=TM_D_SI;
+	tp.h[0]=TM_H_SI;
+
+	tp.S[1]=TM_S_C;
+	tp.R[1]=TM_R_C;
+	tp.A[1]=TM_A_C;
+	tp.B[1]=TM_B_C;
+	tp.lambda[1]=TM_LAMBDA_C;
+	tp.mu[1]=TM_MU_C;
+	tp.beta[1]=TM_BETA_C;
+	tp.n[1]=TM_N_C;
+	tp.c[1]=TM_C_C;
+	tp.d[1]=TM_D_C;
+	tp.h[1]=TM_H_C;
+
+	tp.chi=TM_CHI_SIC;
+
+	tersoff_mult_complete_params(&tp);
+
 	/* cutoff radius */
 	printf("[sic] setting cutoff radius\n");
-	set_cutoff(&md,LC_SI);
+	set_cutoff(&md,TM_S_SI);
 
 	/* set (initial) dimensions of simulation volume */
 	printf("[sic] setting dimensions\n");
-	set_dim(&md,10*LC_SI,10*LC_SI,10*LC_SI,TRUE);
+	set_dim(&md,3*LC_SI,3*LC_SI,3*LC_SI,TRUE);
 
 	/* set periodic boundary conditions in all directions */
 	printf("[sic] setting periodic boundary conditions\n");
@@ -76,32 +104,29 @@ int main(int argc,char **argv) {
 
 	/* create the lattice / place atoms */
 	printf("[sic] creating atoms\n");
-	memset(&v,0,sizeof(t_3dvec));
-	r.y=0;
-	r.z=0;
-	r.x=0.23*sqrt(3.0)*LC_SI/2.0;
-	add_atom(&md,SI,M_SI,0,ATOM_ATTR_2BP,&r,&v);
-	r.x=-r.x;
-	add_atom(&md,SI,M_SI,0,ATOM_ATTR_2BP,&r,&v);
-	printf("[sic] check: there are %d atoms\n",md.count);
-	printf("[sic] check: atoms x pos: %.15f %.15f\n",md.atom[0].r.x,md.atom[1].r.x);
-	printf("[sic] check: atoms x vel: %.15f %.15f\n",md.atom[0].v.x,md.atom[1].v.x);
-	printf("[sic] check: atoms mass: %.35f %.35f\n",md.atom[0].mass,md.atom[1].mass);
+	create_lattice(&md,DIAMOND,LC_SI,SI,M_SI,
+	               ATOM_ATTR_1BP|ATOM_ATTR_2BP|ATOM_ATTR_3BP|ATOM_ATTR_HB,
+	               //ATOM_ATTR_2BP|ATOM_ATTR_HB,
+	               0,3,3,3);
+
+	/* setting a nearest neighbour distance for the moldyn checks */
+	set_nn_dist(&md,sqrt(3.0)*LC_SI/4.0); /* diamond ! */
 
 	/* set temperature */
 	printf("[sic] setting temperature\n");
 	set_temperature(&md,0.0);
+
+	/* set p/t scaling */
+	printf("[sic] set p/t scaling\n");
+	set_pt_scale(&md,0,0,T_SCALE_BERENDSEN,100*tau);
 	
-	/* initial thermal fluctuations of particles */
+	/* initial thermal fluctuations of particles (in equilibrium) */
 	printf("[sic] thermal init\n");
-	thermal_init(&md);
-	printf("[sic] check: there are %d atoms\n",md.count);
-	printf("[sic] check: atoms x pos: %.15f %.15f\n",md.atom[0].r.x,md.atom[1].r.x);
-	printf("[sic] check: atoms x vel: %.15f %.15f\n",md.atom[0].v.x,md.atom[1].v.x);
+	thermal_init(&md,TRUE);
 
 	/* create the simulation schedule */
 	printf("[sic] adding schedule\n");
-	moldyn_add_schedule(&md,10000,1.0e-12);
+	moldyn_add_schedule(&md,100,1.0e-15);
 
 	/* activate logging */
 	printf("[sic] activate logging\n");