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| #include "grid/quadtree.h"
#include "axi.h"
#include "src/compressible-thermal.h"
#include "src/compressible-tension.h"
#define LEVEL 14
double rhoL = 1., rhoR = 4.972194208811462e-5;
double p0L = 1. + 1./19.;
double p0 = 1./19.;
double tend = 1.5;
double Rbub = 1.;
double lambda = 64.;
double tr;
double pdim = 101325.*19./20.;
double rhodim = 998.21;
double Tdim = 293.15;
double Rdim = 1e-4;
face vector cs[];
scalar centroid_x[], centroid_y[], frac_area[];
scalar pdump[];
uf.t[left] = dirichlet(0.);
uf.n[left] = dirichlet(0.);
q.n[left] = dirichlet(0.);
q.t[left] = dirichlet(0.);
uf.n[top] = neumann(0.);
q.n[top] = neumann(0.);
uf.n[right] = neumann(0.);
q.n[right] = neumann(0.);
uf.n[bottom] = 0.;
uf.t[bottom] = dirichlet(0.);
double CFLac = 5.;
double dtmin = HUGE;
event stability (i++) {
foreach() {
double cl = f[] ? sqrt(gamma1*(PI1 + p[])/rhoL/(1. - rhoL*b1)) : 0.;
double cg = (1. - f[]) ? sqrt(gamma2*p[]/rhoR) : 0.;
double cs = fmax(cl,cg);
dtmin = min(Delta*CFLac/cs, dtmin);
}
DT = dtmin;
dtmax = dtmin;
}
int main() {
L0 = lambda;
X0 = -4.*Rbub;
tr = 0.915;
tend *= tr;
double Weber = 1000.;
f.sigma = 1./Weber;
f.gradient = zero;
gamma1 = 1.187;
PI1 = 7028e5/pdim;
b1 = 6.61e-4*rhodim;
qq1 = -1177788*rhodim/pdim;
cv1 = 3610*rhodim*Tdim/pdim; cv2 = 719.18*rhodim*Tdim/pdim;
cp1 = 4285*rhodim*Tdim/pdim; cp2 = 1006.85*rhodim*Tdim/pdim;
kappaT1 = 0.59846028987077/(Rdim/Tdim*sqrt(cube(pdim)/rhodim));
kappaT2 = 25.685e-3/(Rdim/Tdim*sqrt(cube(pdim)/rhodim));
init_grid(1 << 5);
TOLERANCE = 1e-6;
run();
}
event init (t = 0) {
if (!restore (file = "restart")) {
int maxlevel = LEVEL;
refine ( level <= (maxlevel - sqrt(sq(x) + sq(y))/4./Rbub));
fraction (f, - (sq(Rbub) - sq(x) - sq(y)));
foreach() {
frho1[] = f[]*rhoL;
frho2[] = (1. - f[])*rhoR;
double pL = p0L*(1. - Rbub/sqrt(sq(x) + sq(y))) + (p0 - 2.*f.sigma)*Rbub/sqrt(sq(x) + sq(y));
p[] = pL*f[] + p0*(1. - f[]);
double fc = clamp (f[],0.,1.);
double rhocpmcvavg = (cp1 - cv1)*frho1[] + (cp2 - cv2)*frho2[];
double const1 = (fc - frho1[]*b1) + (1. - fc - frho2[]*b2);
double const2 = (fc - frho1[]*b1)*PI1 + (1. - fc - frho2[]*b2)*PI2;
T[] = (const1*p[] + const2)/rhocpmcvavg;
fE1[] = (pL + gamma1*PI1)/(gamma1 - 1.)*(f[] - frho1[]*b1) + frho1[]*qq1;
fE2[] = (1. - f[])*(p0/(gamma2 - 1.));
q.x[] = 0.;
q.y[] = 0.;
}
boundary ((scalar *){q,frho1,frho2,p,fE1,fE2});
}
}
event centroid (t += 0.0001*0.915) {
scalar ff[];
foreach() {
ff[] = 1. - f[];
double xc = x, yc = y;
if (ff[] > 0. && ff[] < 1.) {
coord n = facet_normal (point, ff, cs), p;
double alpha = plane_alpha (ff[], n);
line_center (n, alpha, ff[], &p);
xc += p.x*Delta, yc += p.y*Delta;
}
centroid_x[] = xc; centroid_y[] = yc;
frac_area[] = ff[]*Delta*Delta;
double Ek = 0.;
foreach_dimension()
Ek += sq(q.x[]);
double fc = clamp (f[],0.,1.);
double invgammaavg = (fc - frho1[]*b1)/(gamma1 - 1.) +
(1. - fc - frho2[]*b2)/(gamma2 - 1.);
double PIGAMMAavg = PI1*gamma1*(fc - frho1[]*b1)/(gamma1 - 1.) + frho1[]*qq1 +
PI2*gamma2*(1. - fc - frho2[]*b2)/(gamma2 - 1.) + frho2[]*qq2;
pdump[] = (fE1[] + fE2[] - Ek/(frho1[] + frho2[])/2. - PIGAMMAavg)/invgammaavg;
}
double Volume = 0., area = 0., pressure = 0.;
foreach(reduction(+:area) reduction(+:Volume) reduction(+:pressure)) {
area += frac_area[];
Volume += 2*M_PI*centroid_y[]*frac_area[];
pressure += pdump[]*frac_area[];
}
if (pid() == 0) {
FILE * fp = fopen("volume.txt","a");
char str[80];
sprintf(str,"%g %g %g\n",t/tr,Volume,pressure/area);
fputs(str,fp);
fclose(fp);
}
}
event logfile (t += 0.01*0.915) {
stats sp = statsf (p);
stats su = statsf (q.x);
stats sT = statsf (T);
fprintf (stderr,"t = %g, i = %d, dt = %g, min(p) = %g, max(p) = %g, min(T) = %g, max(T) = %g, min(u) = %g, max(u) = %g\n", t/tr, i, dt/tr, sp.min, sp.max, sT.min, sT.max, su.min, su.max);
}
event output (t += 0.01*0.915) {
char name[80];
sprintf (name,"dump-%g",t/0.915);
dump (name, list = (scalar *){f,pdump,T});
}
event ending (t = tend) {
return 1.;
}
|
