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|---|---|---|---|
| 1 | // -*- mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- | ||
| 2 | // vi: set et ts=4 sw=4 sts=4: | ||
| 3 | // | ||
| 4 | // SPDX-FileCopyrightText: Copyright © DuMux Project contributors, see AUTHORS.md in root folder | ||
| 5 | // SPDX-License-Identifier: GPL-3.0-or-later | ||
| 6 | // | ||
| 7 | /*! | ||
| 8 | * \file | ||
| 9 | * \ingroup FrictionLaws | ||
| 10 | * \brief A pseudo friction law with no bottom friction | ||
| 11 | */ | ||
| 12 | |||
| 13 | #ifndef DUMUX_MATERIAL_FLUIDMATRIX_FRICTIONLAW_NOFRICTION_HH | ||
| 14 | #define DUMUX_MATERIAL_FLUIDMATRIX_FRICTIONLAW_NOFRICTION_HH | ||
| 15 | |||
| 16 | #include "frictionlaw.hh" | ||
| 17 | |||
| 18 | namespace Dumux { | ||
| 19 | /*! | ||
| 20 | * \addtogroup FrictionLaws | ||
| 21 | * \copydetails Dumux::FrictionLawNoFriction | ||
| 22 | */ | ||
| 23 | |||
| 24 | /*! | ||
| 25 | * \ingroup FrictionLaws | ||
| 26 | * \brief A pseudo friction law with no bottom friction | ||
| 27 | * | ||
| 28 | * ### No Friction | ||
| 29 | * | ||
| 30 | * This friction law sets the stress between the flowing fluid and the bottom, | ||
| 31 | * which is called bottom shear stress, to zero. | ||
| 32 | * The bottom shear stress is needed to calculate on the one hand the loss of | ||
| 33 | * momentum due to bottom friction and on the other hand the bedload transport rate. | ||
| 34 | * | ||
| 35 | */ | ||
| 36 | template <typename VolumeVariables> | ||
| 37 | class FrictionLawNoFriction : public FrictionLaw<VolumeVariables> | ||
| 38 | { | ||
| 39 | using Scalar = typename VolumeVariables::PrimaryVariables::value_type; | ||
| 40 | public: | ||
| 41 | /*! | ||
| 42 | * \brief Constructor | ||
| 43 | */ | ||
| 44 |
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3 | FrictionLawNoFriction() = default; |
| 45 | |||
| 46 | /*! | ||
| 47 | * \brief Compute the bottom shear stress. | ||
| 48 | * | ||
| 49 | * \param volVars Volume variables | ||
| 50 | * | ||
| 51 | * Compute the bottom shear stress due to bottom friction. | ||
| 52 | * The bottom shear stress is a projection of the shear stress tensor onto the river bed. | ||
| 53 | * It can therefore be represented by a (tangent) vector with two entries. | ||
| 54 | * For this law without bottom friction, the bottom shear stress is zero. | ||
| 55 | * | ||
| 56 | * \return shear stress in N/m^2. First entry is the x-component, the second the y-component. | ||
| 57 | */ | ||
| 58 | ✗ | Dune::FieldVector<Scalar, 2> bottomShearStress(const VolumeVariables& volVars) const final | |
| 59 | { | ||
| 60 | ✗ | return {0.0, 0.0}; | |
| 61 | } | ||
| 62 | }; | ||
| 63 | |||
| 64 | } // end namespace Dumux | ||
| 65 | |||
| 66 | #endif | ||
| 67 |