cl_FEM_SideSet.hpp

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/*
 * BELFEM -- The Berkeley Lab Finite Element Framework
 * Copyright (c) 2026, The Regents of the University of California,
 * through Lawrence Berkeley National Laboratory (subject to receipt of any required
 * approvals from the U.S. Dept. of Energy).  All rights reserved.
 *
 * Developers: Christian Messe, Gregory Giard
 *
 * See the top-level LICENSE file for the complete license and disclaimer.
 */
 
#ifndef BELFEM_CL_FEM_SIDESET_HPP
#define BELFEM_CL_FEM_SIDESET_HPP
 
#include "typedefs.hpp"
#include "cl_Vector.hpp"
#include "cl_FEM_Group.hpp"
#include "en_FEM_BoundaryConditionImposing.hpp"
 
namespace belfem
{
    namespace fem
    {
//------------------------------------------------------------------------------
 
        class Field ;
        class DofManager ;
        class DofManagerBase ;
        class Dof ;
        class Block ;
 
//------------------------------------------------------------------------------

        bool
        pin_dirichlet_dof(
                const DofManagerBase * aParent,
                      Dof            * aDof,
                const real             aValue,
                const id_t             aGroupID,
                const id_t             aNodeID,
                      index_t        & aNumFirstFlips );
 
//------------------------------------------------------------------------------
 
        class SideSet  : public Group
        {
 
//----------------------------------------------------------------------------
        protected:
//----------------------------------------------------------------------------
 
            const ElementType mMasterType = ElementType::EMPTY ;
            const ElementType mSlaveType  = ElementType::EMPTY ;
 
            // side nodes
            Cell< mesh::Node * > mNodes;
 
            // container for BC values per dof type
            Vector< real > mBcValues ;
 
            Cell< BoundaryConditionImposing > mBcTypes ;
 
//------------------------------------------------------------------------------
        private:
//------------------------------------------------------------------------------
            // container for temperature for alpha BC
            real mTinf = BELFEM_QUIET_NAN ;
 
            // conainer with reference blocks for sideset integrations
            Cell< IntegrationData * > mMasterIntegration ;
            Cell< IntegrationData * > mSlaveIntegration ;
 
//------------------------------------------------------------------------------
        public:
//------------------------------------------------------------------------------
 
            SideSet( DofManager * aParent,
                     const id_t aID,
                     Cell< mesh::Facet * > & aFacets,
                     const GroupType aGroupType = GroupType::SIDESET );
 
//------------------------------------------------------------------------------
 
            /*
             *  a constructor with an empty parent, just used for tests
             */
            SideSet( const ElementType aElementType,
                     const ElementType aMasterType,
                     const ElementType aSlaveType,
                     const GroupType aGroupType = GroupType::SIDESET  );
 
//------------------------------------------------------------------------------
 
            ~SideSet() override;
 
//------------------------------------------------------------------------------
 
            void
            impose_dirichlet( const real aValue, const uint aDofType=0 );
 
//------------------------------------------------------------------------------
 
            void
            impose_neumann( const real aValue, const uint aDofType=0 );
 
//------------------------------------------------------------------------------

            void
            impose_alpha( const real aAlpha = BELFEM_QUIET_NAN, const real aTinf=BELFEM_QUIET_NAN );
 
//------------------------------------------------------------------------------
 
            void
            free();
 
//------------------------------------------------------------------------------
 
            void
            set_boundary_conditions();
 
//------------------------------------------------------------------------------
 
            // get bc type
            BoundaryConditionImposing
            bc_type( const index_t & aDimension ) const ;
 
//------------------------------------------------------------------------------
 
            // get bc type
            const real &
            bc_value( const index_t & aDimension ) const ;
 
//------------------------------------------------------------------------------

             Cell< mesh::Node * > &
             nodes() ;
 
//------------------------------------------------------------------------------
 
            uint
            number_of_boundary_conditions() const ;
 
//------------------------------------------------------------------------------

             ElementType
             master_type() const override ;
 
//------------------------------------------------------------------------------

             ElementType
             slave_type() const override ;
 
//------------------------------------------------------------------------------

            IntegrationData *
            master_integration( const uint aSideSetIndex ) override ;
 
//------------------------------------------------------------------------------

            IntegrationData *
            slave_integration( const uint aSideSetIndex ) override ;
 
//------------------------------------------------------------------------------

            void
            initialize_lookup_tables( const uint aIntegrationOrder ) override;
 
//------------------------------------------------------------------------------
        protected:
//------------------------------------------------------------------------------
 
            // surface elements
            virtual void
            initialize_elements( Cell< mesh::Facet * > & aFacets  );
 
//------------------------------------------------------------------------------
        private:
//------------------------------------------------------------------------------
 
            void
            collect_nodes( Cell< mesh::Facet * > & aFacets );
 
//------------------------------------------------------------------------------

            void
            delete_lookup_tables();
 
 
//------------------------------------------------------------------------------
    };
 
//------------------------------------------------------------------------------
 
        // get bc type
        inline BoundaryConditionImposing
        SideSet::bc_type( const index_t & aDimension ) const
        {
            return mBcTypes( aDimension );
        }
 
//------------------------------------------------------------------------------
 
        // get bc type
        inline const real &
        SideSet::bc_value( const index_t & aDimension ) const
        {
            return mBcValues( aDimension );
        }
 
//------------------------------------------------------------------------------
 
        inline
        Cell< mesh::Node * > &
        SideSet::nodes()
        {
            return mNodes ;
        }
 
//------------------------------------------------------------------------------
 
        inline uint
        SideSet::number_of_boundary_conditions() const
        {
            return mBcTypes.size() ;
        }
 
//------------------------------------------------------------------------------
 
        inline ElementType
        SideSet::master_type() const
        {
            return mMasterType ;
        }
 
//------------------------------------------------------------------------------
 
        inline ElementType
        SideSet::slave_type() const
        {
            return mSlaveType ;
        }
 
//------------------------------------------------------------------------------
 
        inline IntegrationData *
        SideSet::master_integration( const uint aSideSetIndex )
        {
            return mMasterIntegration( aSideSetIndex );
        }
 
//------------------------------------------------------------------------------
 
        inline IntegrationData *
        SideSet::slave_integration( const uint aSideSetIndex )
        {
            return mSlaveIntegration( aSideSetIndex );
        }
 
//------------------------------------------------------------------------------
    }
}
#endif //BELFEM_CL_FEM_SIDESET_HPP