void solver_init(ode_workspace *odews, int argc, char **argv)
{
workspace *W;
// Initialise the workspace
odews->W = workspace_init(argc, argv);
W = odews->W;
odews->mdeclared = 0;
// Put initial conditions in to y
odews->y = zerosv(W->nu);
odews->f = zerosv(W->nu);
set_initial_conditions(W, odews->y);
// Initial Jacobian computation
double t0 = MPI_Wtime();
evaluate(W, odews->t0, odews->y, odews->f);
double tf = MPI_Wtime();
odews->W->tfeval = tf - t0;
t0 = MPI_Wtime();
jacupdate(W, odews->t0, odews->y);
double ta = MPI_Wtime();
odews->S = newton_sparsity(W->J);
double tb = MPI_Wtime();
newton_matrix(odews);
tf = MPI_Wtime();
odews->W->tjacupdate = (tf - t0) - (tb - ta);
odews->W->tjacfactorize = (tb - ta);
}
planet_pointer dist_planetary_masses(long double stell_mass_ratio,
long double stell_luminosity_ratio,
long double inner_dust,
long double outer_dust,
long double outer_planet_limit,
long double dust_density_coeff,
planet_pointer seed_system,
int do_moons)
{
long double a;
long double e;
long double mass;
long double dust_mass;
long double gas_mass;
long double crit_mass;
long double planet_inner_bound;
long double planet_outer_bound;
planet_pointer seeds = seed_system;
set_initial_conditions(inner_dust,outer_dust);
planet_inner_bound = nearest_planet(stell_mass_ratio);
if (outer_planet_limit == 0)
planet_outer_bound = farthest_planet(stell_mass_ratio);
else
planet_outer_bound = outer_planet_limit;
while (dust_left)
{
if (seeds != NULL)
{
a = seeds->a;
e = seeds->e;
seeds = seeds->next_planet;
}
else
{
a = random_number(planet_inner_bound,planet_outer_bound);
e = random_eccentricity( );
}
mass = PROTOPLANET_MASS;
dust_mass = 0;
gas_mass = 0;
if (flag_verbose & 0x0200)
fprintf (stderr, "Checking %Lg AU.\n",a);
if (dust_available(inner_effect_limit(a, e, mass),
outer_effect_limit(a, e, mass)))
{
if (flag_verbose & 0x0100)
fprintf (stderr, "Injecting protoplanet at %Lg AU.\n", a);
dust_density = dust_density_coeff * sqrt(stell_mass_ratio)
* exp(-ALPHA * pow(a,(1.0 / N)));
crit_mass = critical_limit(a,e,stell_luminosity_ratio);
accrete_dust(&mass, &dust_mass, &gas_mass,
a,e,crit_mass,
planet_inner_bound,
planet_outer_bound);
dust_mass += PROTOPLANET_MASS;
if (mass > PROTOPLANET_MASS)
coalesce_planetesimals(a,e,mass,crit_mass,
dust_mass, gas_mass,
stell_luminosity_ratio,
planet_inner_bound,planet_outer_bound,
do_moons);
else if (flag_verbose & 0x0100)
fprintf (stderr, ".. failed due to large neighbor.\n");
}
else if (flag_verbose & 0x0200)
fprintf (stderr, ".. failed.\n");
}
return(planet_head);
}
