vangenuchtenparams.hh

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#ifndef DUMUX_VAN_GENUCHTEN_PARAMS_HH
#define DUMUX_VAN_GENUCHTEN_PARAMS_HH
 
#include <dune/common/float_cmp.hh>
 
namespace Dumux {
 
template<class ScalarT>
class VanGenuchtenParams
{
public:
    using Scalar = ScalarT;
 
    VanGenuchtenParams()
    {}
 
    VanGenuchtenParams(Scalar vgAlpha, Scalar vgn, Scalar vgl=0.5)
    {
        setVgAlpha(vgAlpha);
        setVgn(vgn);
        setVgl(vgl);
    }
 
    template<class OtherParams>
    bool operator== (const OtherParams& otherParams) const
    {
        return Dune::FloatCmp::eq(vgAlpha_, otherParams.vgAlpha(), /*eps*/1e-6*vgAlpha_)
               && Dune::FloatCmp::eq(vgn_, otherParams.vgn(), /*eps*/1e-6*vgn_)
               && Dune::FloatCmp::eq(vgl_, otherParams.vgl(), /*eps*/1e-6*vgl_);
    }
 
    Scalar vgAlpha() const
    { return vgAlpha_; }
 
    void setVgAlpha(Scalar v)
    { vgAlpha_ = v; }
 
    Scalar vgm() const
    { return vgm_; }
 
    void setVgm(Scalar m)
    { vgm_ = m; vgn_ = 1/(1 - vgm_); }
 
    Scalar vgn() const
    { return vgn_; }
 
    void setVgn(Scalar n)
    { vgn_ = n; vgm_ = 1 - 1/vgn_; }
    
    Scalar vgl() const
    { return vgl_; }
 
    void setVgl(Scalar l)
    { vgl_ = l; }
 
private:
    Scalar vgAlpha_;
    Scalar vgm_;
    Scalar vgn_;
    Scalar vgl_ = 0.5; 
};
} // namespace Dumux
 
#endif