int main(int, char **) {
FILE *out = fopen("papers/fuzzy-fmt/figs/bh-homogeneous.dat", "w");
const double Tmax = 10.0, dT = 0.01, Tmin = dT;
fprintf(out, "# n_reduced");
for (double T = Tmin; T<= Tmax + dT/2; T += dT) {
fprintf(out, "\tp(kT=%g)/nkT", T);
}
fprintf(out, "\n0");
for (double T = Tmin; T<= Tmax + dT/2; T += dT) {
fprintf(out, "\t%g", T);
}
fprintf(out, "\n");
const double dn = 0.01, nmax = 2.5;
for (double n_reduced = dn; n_reduced <= nmax; n_reduced += dn) {
fprintf(out, "%g", n_reduced);
for (double T = Tmin; T<= Tmax + dT/2; T += dT) {
const double temp = T;
double rad = R_BH(temp);
Functional f = HardFluid(rad,0);
double usekT = temp;
//if (temp == 0) usekT = 1.0;
const double n = n_reduced*pow(2,-5.0/2.0);
// return *reduced* pressure!
fprintf(out, "\t%g", pressure(OfEffectivePotential(f), usekT, n)/pow(2,-5.0/2.0));
}
fprintf(out, "\n");
}
fclose(out);
return 0;
}
int main(int argc, char **argv) {
double reduced_density, temp;
if (argc != 3) {
printf("usage: %s reduced_density kT\n", argv[0]);
return 1;
}
printf("git version: %s\n", version_identifier());
sscanf(argv[1], "%lg", &reduced_density);
sscanf(argv[2], "%lg", &temp);
HomogeneousWhiteBearFluid hf;
printf("dx is %g\n", dx);
double rad_bh = R_BH(temp);
printf("rad is %g\n", rad_bh);
hf.R() = rad_bh;
hf.kT() = temp;
hf.n() = reduced_density*pow(2,-5.0/2.0);
printf("dividing by sigma = %g\n", sigma);
printf("eta is %g\n", hf.n()*uipow(radius,3)*M_PI*4/3);
hf.mu() = 0;
hf.mu() = hf.d_by_dn(); // set mu based on derivative of hf
printf("bulk energy is %g\n", hf.energy());
printf("cell energy should be %g\n", hf.energy()*dx*dx*dx);
WhiteBearFluidVeff f(xmax, ymax, zmax, dx);
f.R() = hf.R();
f.kT() = hf.kT();
f.mu() = hf.mu();
f.Vext() = 0;
f.Veff() = -temp*log(hf.n());
{
const int Ntot = f.Nx()*f.Ny()*f.Nz();
const Vector r = f.get_r();
const double Vmax = 100*temp;
for (int i=0; i<Ntot; i++) {
f.Vext()[i] = 4*epsilon*(uipow(sigma/r[i], 12) - uipow(sigma/r[i], 6));
if (!(f.Vext()[i] < Vmax)) f.Vext()[i] = Vmax;
f.Veff()[i] += f.Vext()[i]*temp/10; // adjust uniform guess based on repulsive potential
}
}
took("setting up the potential and Veff");
printf("initial energy is %g\n", f.energy());
took("Finding initial energy");
printf("Here is a new line!\n");
run_minimization(reduced_density, &f, temp);
return 0;
}
