NurbsWallSelfTest.cpp File Reference

#include "Nurbs/NurbsSurface.h"
#include "Walls/NurbsWall.h"
#include "Walls/InfiniteWall.h"
#include "Math/Helpers.h"
#include <sstream>
#include <DPMBase.h>
#include <Interactions/NormalForceInteractions/LinearViscoelasticInteraction.h>
#include <Species/LinearViscoelasticSpecies.h>

Functions
int	main ()

Function Documentation

main()

int main

(

)

Tests if contact with nurbs surface is correctly implemented. The setup consists of five particles and two walls, on of which is a NurbsWall. The particles fall downwards by gravity, filling the space between the two walls.

{
    //define quarter circle as nurbs surface
    std::vector<double> knotsU = {0,0,0,1,1,1};
    std::vector<double> knotsV = {0,0,1,1};
    std::vector<std::vector<Vec3D>> controlPoints = {{{1,0,0},{1,0,2}},{{1,1,0},{1,1,2}},{{0,1,0},{0,1,2}}};
    std::vector<std::vector<Mdouble>> weights = {{1,1},{1,1},{2,2}};
    NurbsSurface nurbsSurface(knotsU,knotsV,controlPoints,weights);
    //nurbsSurface.flipOrientation();
 
    //create a basic dpm class
    DPMBase dpm;
    dpm.setName("NurbsWallSelfTest");
    dpm.setGravity({0,0,-1});
    auto s = dpm.speciesHandler.copyAndAddObject(LinearViscoelasticSpecies());
    s->setCollisionTimeAndRestitutionCoefficient(.05,.1,s->getMassFromRadius(0.1));
 
    //define nurbs wall and add to dpm class
    NurbsWall nurbsWall;
    nurbsWall.setSpecies(s);
    nurbsWall.set(nurbsSurface);
    nurbsWall.setOrientationViaNormal({0,0,1});
    nurbsWall.setPosition({1,0,0});
    dpm.wallHandler.copyAndAddObject(nurbsWall);
 
    InfiniteWall infiniteWall;
    infiniteWall.setSpecies(s);
    infiniteWall.set({0,1,0},{1,1,1});
    dpm.wallHandler.copyAndAddObject(infiniteWall);
 
    SphericalParticle particle;
    particle.setSpecies(s);
    particle.setRadius(.1);
    for (double x=0; x<=0; x+=.2) {
        for (double y = .1; y <= .9; y += .2) {
            for (double z = 1.1; z <= 1.1; z += .2) {
                particle.setPosition({x, y, z});
                dpm.particleHandler.copyAndAddObject(particle);
            }
        }
    }
 
    dpm.wallHandler.setWriteVTK(FileType::ONE_FILE);
    dpm.setParticlesWriteVTK(true);
    dpm.setTimeStep(0.001);
    dpm.setTimeMax(2.0);
    dpm.setSaveCount(100);
    dpm.setDomain({-1,0,0},{1,1,1});
    dpm.solve();
 
    return 0;
}

References BaseHandler< T >::copyAndAddObject(), ONE_FILE, DPMBase::particleHandler, NurbsWall::set(), InfiniteWall::set(), DPMBase::setDomain(), DPMBase::setGravity(), DPMBase::setName(), BaseInteractable::setOrientationViaNormal(), DPMBase::setParticlesWriteVTK(), BaseInteractable::setPosition(), BaseParticle::setRadius(), DPMBase::setSaveCount(), BaseParticle::setSpecies(), BaseWall::setSpecies(), DPMBase::setTimeMax(), DPMBase::setTimeStep(), WallHandler::setWriteVTK(), DPMBase::solve(), DPMBase::speciesHandler, and DPMBase::wallHandler.