testBubbles.cpp

#include "preprocessor_defines.dat"
#include "Class_Global.hpp"
#include "Class_Para_Tree.hpp"
#include "User_Data_Comm.hpp"
#include "User_Data_LB.hpp"

using namespace std;

// =================================================================================== //

class bubble{
public:
    double c[2];
    double r;
};


int main(int argc, char *argv[]) {

#if NOMPI==0
    MPI::Init(argc, argv);

    {
#endif
        int iter = 0;

        Class_Para_Tree<2> pabloBB;

        pabloBB.setBalanceCodimension(1);
        int idx = 0;
        pabloBB.setBalance(idx,true);

        for (iter=1; iter<7; iter++){
            pabloBB.adaptGlobalRefine();
        }

#if NOMPI==0

        pabloBB.loadBalance();
#endif

        uint32_t nocts = pabloBB.getNumOctants();

        time_t Time = time(NULL);
        srand(Time);
        if(pabloBB.rank == 0)
            cout << "the seed = " << Time << endl;

#if NOMPI==0
        int nb = 100;
#else
        int nb = 10;
#endif
        vector<bubble> BB;
        vector<bubble> BB0;
        vector<double> DY;
        vector<double> OM;
        vector<double> AA;

        for (int i=0; i<nb; i++){
            double randc[2];
            randc[0] = 0.8 * (double) (rand()) /  RAND_MAX + 0.1;
            randc[1] = (double) (rand()) /  RAND_MAX - 0.5;
            double randr = 0.05 * (double) (rand()) / RAND_MAX + 0.02;
            double dy = 0.005 + 0.05 * (double) (rand()) / RAND_MAX;
            double omega = 0.5 * (double) (rand()) / RAND_MAX;
            double aa = 0.15 * (double) (rand()) / RAND_MAX;
            bubble bb;
            bb.c[0] = randc[0];
            bb.c[1] = randc[1];
            bb.r = randr;
            BB.push_back(bb);
            BB0.push_back(bb);
            DY.push_back(dy);
            OM.push_back(omega);
            AA.push_back(aa);
        }
        double t0 = 0;
        double t = t0;
        double Dt = 0.5;

        int itstart = 1;
        int itend = 200;

        int nrefperiter = 4;

        for (iter=itstart; iter<itend; iter++){
            if(pabloBB.rank==0) cout << "iter " << iter << endl;
            t += Dt;

            for (int i=0; i<nb; i++){
                BB[i].c[0] = BB0[i].c[0] + AA[i]*cos(OM[i]*t);
                BB[i].c[1] = BB[i].c[1]+ Dt*DY[i];
            }

            for (int iref=0; iref<nrefperiter; iref++){

                for (int i=0; i<nocts; i++){
                    bool inside = false;
                    vector<vector<double> > nodes = pabloBB.getNodes(i);
                    vector<double> center = pabloBB.getCenter(i);
                    int ib = 0;
                    while (!inside && ib<nb){
                        double xc = BB[ib].c[0];
                        double yc = BB[ib].c[1];
                        double radius = BB[ib].r;
                        for (int j=0; j<global2D.nnodes; j++){
                            double x = nodes[j][0];
                            double y = nodes[j][1];
                            if ( ((!inside) &&
                                    (pow((x-xc),2.0)+pow((y-yc),2.0) <= 1.15*pow(radius,2.0) &&
                                            pow((x-xc),2.0)+pow((y-yc),2.0) >= 0.85*pow(radius,2.0)))
                                            || ((!inside) && (pow((center[0]-xc),2.0)+pow((center[1]-yc),2.0) <= 1.15*pow(radius,2.0) &&
                                                    pow((center[0]-xc),2.0)+pow((center[1]-yc),2.0) >= 0.85*pow(radius,2.0)))){
                                if (pabloBB.getLevel(i) < 9){
                                    pabloBB.setMarker(i,1);
                                }
                                else{
                                    pabloBB.setMarker(i,0);
                                }
                                inside = true;
                            }
                        }
                        ib++;
                    }
                    if (pabloBB.getLevel(i) > 6 && !inside){
                        pabloBB.setMarker(i,-1);
                    }
                }

                bool adapt = pabloBB.adapt();

#if NOMPI==0

                pabloBB.loadBalance();
#endif

                nocts = pabloBB.getNumOctants();

            }

            pabloBB.updateConnectivity();
            pabloBB.write("PabloBubble_iter"+to_string(static_cast<unsigned long long>(iter)));
        }
#if NOMPI==0
    }

    MPI::Finalize();
#endif
}