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131 lines
5.6 KiB
C++
131 lines
5.6 KiB
C++
/*
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Copyright 2012 SINTEF ICT, Applied Mathematics.
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#ifndef OPM_INCOMPPROPERTIESINTERFACE_HEADER_INCLUDED
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#define OPM_INCOMPPROPERTIESINTERFACE_HEADER_INCLUDED
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namespace Opm
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{
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/// Abstract base class for incompressible fluid and reservoir properties.
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///
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/// Supports variable number of spatial dimensions, called D.
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/// Supports variable number of phases, called P.
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/// In general, when arguments call for n values of some vector or
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/// matrix property, such as saturation, they shall always be
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/// ordered cellwise:
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/// [s^1_0 s^2_0 s^3_0 s^1_1 s^2_2 ... ]
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/// in which s^i_j denotes saturation of phase i in cell j.
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class IncompPropertiesInterface
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{
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public:
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virtual ~IncompPropertiesInterface() {}
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// ---- Rock interface ----
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/// \return D, the number of spatial dimensions.
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virtual int numDimensions() const = 0;
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/// \return N, the number of cells.
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virtual int numCells() const = 0;
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/// \return Array of N porosity values.
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virtual const double* porosity() const = 0;
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/// \return Array of ND^2 permeability values.
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/// The D^2 permeability values for a cell are organized as a matrix,
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/// which is symmetric (so ordering does not matter).
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virtual const double* permeability() const = 0;
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// ---- Fluid interface ----
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/// \return P, the number of phases (also the number of components).
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virtual int numPhases() const = 0;
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/// \return Array of P viscosity values.
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virtual const double* viscosity() const = 0;
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/// Densities of fluid phases at reservoir conditions.
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/// \return Array of P density values.
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virtual const double* density() const = 0;
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/// Densities of fluid phases at surface conditions.
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/// Note: a reasonable question to ask is why there can be
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/// different densities at surface and reservoir conditions,
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/// when the phases are assumed incompressible. The answer is
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/// that even if we approximate the phases as being
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/// incompressible during simulation, the density difference
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/// between surface and reservoir may be larger. For accurate
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/// reporting and using data given in terms of surface values,
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/// we need to handle this difference.
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/// \return Array of P density values.
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virtual const double* surfaceDensity() const = 0;
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/// \param[in] n Number of data points.
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/// \param[in] s Array of nP saturation values.
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/// \param[in] cells Array of n cell indices to be associated with the s values.
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/// \param[out] kr Array of nP relperm values, array must be valid before calling.
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/// \param[out] dkrds If non-null: array of nP^2 relperm derivative values,
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/// array must be valid before calling.
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/// The P^2 derivative matrix is
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/// m_{ij} = \frac{dkr_i}{ds^j},
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/// and is output in Fortran order (m_00 m_10 m_20 m01 ...)
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virtual void relperm(const int n,
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const double* s,
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const int* cells,
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double* kr,
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double* dkrds) const = 0;
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/// \param[in] n Number of data points.
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/// \param[in] s Array of nP saturation values.
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/// \param[in] cells Array of n cell indices to be associated with the s values.
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/// \param[out] pc Array of nP capillary pressure values, array must be valid before calling.
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/// \param[out] dpcds If non-null: array of nP^2 derivative values,
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/// array must be valid before calling.
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/// The P^2 derivative matrix is
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/// m_{ij} = \frac{dpc_i}{ds^j},
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/// and is output in Fortran order (m_00 m_10 m_20 m01 ...)
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virtual void capPress(const int n,
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const double* s,
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const int* cells,
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double* pc,
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double* dpcds) const = 0;
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/// Obtain the range of allowable saturation values.
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/// In cell cells[i], saturation of phase p is allowed to be
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/// in the interval [smin[i*P + p], smax[i*P + p]].
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/// \param[in] n Number of data points.
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/// \param[in] cells Array of n cell indices.
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/// \param[out] smin Array of nP minimum s values, array must be valid before calling.
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/// \param[out] smax Array of nP maximum s values, array must be valid before calling.
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virtual void satRange(const int n,
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const int* cells,
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double* smin,
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double* smax) const = 0;
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};
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} // namespace Opm
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#endif // OPM_INCOMPPROPERTIESINTERFACE_HEADER_INCLUDED
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