Example #1
0
void
VertEqImpl::upscale (const TwophaseState& fineScale,
                     TwophaseState& coarseScale) {
	// dimension state object to the top grid
	coarseScale.init (*ts, pr->numPhases ());

	// upscale pressure and saturation to find the initial state of
	// the two-dimensional domain. we only need to set the pressure
	// and saturation, the flux is an output field. these methods
	// are handled by the props class, since it already has access to
	// the densities and weights.
	pr->upscale_saturation (&fineScale.saturation ()[0],
	                        &coarseScale.saturation ()[0]);
	pr->upd_res_sat (&coarseScale.saturation ()[0]);
	pr->upscale_pressure (&coarseScale.saturation ()[0],
	                      &fineScale.pressure ()[0],
	                      &coarseScale.pressure ()[0]);

	// use the regular helper method to initialize the face pressure
	// since it is implemented in the header, we have access to it
	// even though it is in an anonymous namespace!
	const UnstructuredGrid& g = this->grid();

	initFacePressure (UgGridHelpers::dimensions (g),
	                  UgGridHelpers::numFaces (g),
	                  UgGridHelpers::faceCells (g),
	                  UgGridHelpers::beginFaceCentroids (g),
	                  UgGridHelpers::beginCellCentroids (g),
	                  coarseScale);

	// update the properties from the initial state (the
	// simulation object won't call this method before the
	// first timestep; it assumes that the state is initialized
	// accordingly (which is what we do here now)
	notify (coarseScale);
}
Example #2
0
/// \page tutorial3
/// \section commentedsource1 Program walk-through.
/// \details
/// Main function
/// \snippet tutorial3.cpp main
/// \internal [main]
int main ()
try
{
    /// \internal [main]
    /// \endinternal

    /// \page tutorial3
    /// \details
    /// We define the grid. A Cartesian grid with 400 cells,
    /// each being 10m along each side. Note that we treat the
    /// grid as 3-dimensional, but have a thickness of only one
    /// layer in the Z direction.
    ///
    /// The Opm::GridManager is responsible for creating and destroying the grid,
    /// the UnstructuredGrid data structure contains the actual grid topology
    /// and geometry.
    /// \snippet tutorial3.cpp grid
    /// \internal [grid]
    int nx = 20;
    int ny = 20;
    int nz = 1;
    double dx = 10.0;
    double dy = 10.0;
    double dz = 10.0;
    using namespace Opm;
    GridManager grid_manager(nx, ny, nz, dx, dy, dz);
    const UnstructuredGrid& grid = *grid_manager.c_grid();
    int num_cells = grid.number_of_cells;
    /// \internal [grid]
    /// \endinternal

    /// \page tutorial3
    /// \details
    /// We define the properties of the fluid.\n
    /// Number of phases, phase densities, phase viscosities,
    /// rock porosity and permeability.
    ///
    /// We always use SI units in the simulator. Many units are
    /// available for use, however.  They are stored as constants in
    /// the Opm::unit namespace, while prefixes are in the Opm::prefix
    /// namespace. See Units.hpp for more.
    /// \snippet tutorial3.cpp set properties
    /// \internal [set properties]
    int num_phases = 2;
    using namespace Opm::unit;
    using namespace Opm::prefix;
    std::vector<double> density(num_phases, 1000.0);
    std::vector<double> viscosity(num_phases, 1.0*centi*Poise);
    double porosity = 0.5;
    double permeability = 10.0*milli*darcy;
    /// \internal [set properties]
    /// \endinternal

    /// \page tutorial3
    /// \details We define the relative permeability function. We use a basic fluid
    /// description and set this function to be linear. For more realistic fluid, the
    /// saturation function may be interpolated from experimental data.
    /// \snippet tutorial3.cpp relperm
    /// \internal [relperm]
    SaturationPropsBasic::RelPermFunc rel_perm_func = SaturationPropsBasic::Linear;
    /// \internal [relperm]
    /// \endinternal

    /// \page tutorial3
    /// \details We construct a basic fluid and rock property object
    /// with the properties we have defined above.  Each property is
    /// constant and hold for all cells.
    /// \snippet tutorial3.cpp properties
    /// \internal [properties]
    IncompPropertiesBasic props(num_phases, rel_perm_func, density, viscosity,
                                porosity, permeability, grid.dimensions, num_cells);
    /// \internal [properties]
    /// \endinternal

    /// \page tutorial3
    /// \details Gravity parameters. Here, we set zero gravity.
    /// \snippet tutorial3.cpp gravity
    /// \internal [gravity]
    const double *grav = 0;
    std::vector<double> omega;
    /// \internal [gravity]
    /// \endinternal

    /// \page tutorial3
    /// \details We set up the source term. Positive numbers indicate that the cell is a source,
    /// while negative numbers indicate a sink.
    /// \snippet tutorial3.cpp source
    /// \internal [source]
    std::vector<double> src(num_cells, 0.0);
    src[0] = 1.;
    src[num_cells-1] = -1.;
    /// \internal [source]
    /// \endinternal

    /// \page tutorial3
    /// \details We set up the boundary conditions. Letting bcs be empty is equivalent
    /// to no-flow boundary conditions.
    /// \snippet tutorial3.cpp boundary
    /// \internal [boundary]
    FlowBCManager bcs;
    /// \internal [boundary]
    /// \endinternal

    /// \page tutorial3
    /// \details We may now set up the pressure solver. At this point,
    /// unchanging parameters such as transmissibility are computed
    /// and stored internally by the IncompTpfa class. The null pointer
    /// constructor argument is for wells, which are not used in this tutorial.
    /// \snippet tutorial3.cpp pressure solver
    /// \internal [pressure solver]
    LinearSolverUmfpack linsolver;
    IncompTpfa psolver(grid, props, linsolver, grav, NULL, src, bcs.c_bcs());
    /// \internal [pressure solver]
    /// \endinternal

    /// \page tutorial3
    /// \details We set up a state object for the wells. Here, there are
    /// no wells and we let it remain empty.
    /// \snippet tutorial3.cpp well
    /// \internal [well]
    WellState well_state;
    /// \internal [well]
    /// \endinternal

    /// \page tutorial3
    /// \details We compute the pore volume
    /// \snippet tutorial3.cpp pore volume
    /// \internal [pore volume]
    std::vector<double> porevol;
    Opm::computePorevolume(grid, props.porosity(), porevol);
    /// \internal [pore volume]
    /// \endinternal

    /// \page tutorial3
    /// \details Set up the transport solver. This is a reordering implicit Euler transport solver.
    /// \snippet tutorial3.cpp transport solver
    /// \internal [transport solver]
    const double tolerance = 1e-9;
    const int max_iterations = 30;
    Opm::TransportSolverTwophaseReorder transport_solver(grid, props, NULL, tolerance, max_iterations);
    /// \internal [transport solver]
    /// \endinternal

    /// \page tutorial3
    /// \details Time integration parameters
    /// \snippet tutorial3.cpp time parameters
    /// \internal [time parameters]
    const double dt = 0.1*day;
    const int num_time_steps = 20;
    /// \internal [time parameters]
    /// \endinternal


    /// \page tutorial3
    /// \details We define a vector which contains all cell indexes. We use this
    /// vector to set up parameters on the whole domain.
    /// \snippet tutorial3.cpp cell indexes
    /// \internal [cell indexes]
    std::vector<int> allcells(num_cells);
    for (int cell = 0; cell < num_cells; ++cell) {
        allcells[cell] = cell;
    }
    /// \internal [cell indexes]
    /// \endinternal

    /// \page tutorial3
    /// \details
    /// We set up a two-phase state object, and
    /// initialize water saturation to minimum everywhere.
    /// \snippet tutorial3.cpp two-phase state
    /// \internal [two-phase state]
    TwophaseState state;
    state.init(grid.number_of_cells , grid.number_of_faces, 2);
    initSaturation( allcells , props , state , MinSat );

    /// \internal [two-phase state]
    /// \endinternal

    /// \page tutorial3
    /// \details This string stream will be used to construct a new
    /// output filename at each timestep.
    /// \snippet tutorial3.cpp output stream
    /// \internal [output stream]
    std::ostringstream vtkfilename;
    /// \internal [output stream]
    /// \endinternal


    /// \page tutorial3
    /// \details Loop over the time steps.
    /// \snippet tutorial3.cpp time loop
    /// \internal [time loop]
    for (int i = 0; i < num_time_steps; ++i) {
        /// \internal [time loop]
	/// \endinternal


        /// \page tutorial3
        /// \details Solve the pressure equation
        /// \snippet tutorial3.cpp solve pressure
        /// \internal [solve pressure]
        psolver.solve(dt, state, well_state);
        /// \internal [solve pressure]
	/// \endinternal

        /// \page tutorial3
        /// \details  Solve the transport equation.
        /// \snippet tutorial3.cpp transport solve
	/// \internal [transport solve]
        transport_solver.solve(&porevol[0], &src[0], dt, state);
        /// \internal [transport solve]
	/// \endinternal

        /// \page tutorial3
        /// \details Write the output to file.
        /// \snippet tutorial3.cpp write output
	/// \internal [write output]
        vtkfilename.str("");
        vtkfilename << "tutorial3-" << std::setw(3) << std::setfill('0') << i << ".vtu";
        std::ofstream vtkfile(vtkfilename.str().c_str());
        Opm::DataMap dm;
        dm["saturation"] = &state.saturation();
        dm["pressure"] = &state.pressure();
        Opm::writeVtkData(grid, dm, vtkfile);
    }
}
catch (const std::exception &e) {
    std::cerr << "Program threw an exception: " << e.what() << "\n";
    throw;
}