Line data    Source code

       1             : // The libMesh Finite Element Library.
       2             : // Copyright (C) 2002-2025 Benjamin S. Kirk, John W. Peterson, Roy H. Stogner
       3             : 
       4             : // This library is free software; you can redistribute it and/or
       5             : // modify it under the terms of the GNU Lesser General Public
       6             : // License as published by the Free Software Foundation; either
       7             : // version 2.1 of the License, or (at your option) any later version.
       8             : 
       9             : // This library is distributed in the hope that it will be useful,
      10             : // but WITHOUT ANY WARRANTY; without even the implied warranty of
      11             : // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
      12             : // Lesser General Public License for more details.
      13             : 
      14             : // You should have received a copy of the GNU Lesser General Public
      15             : // License along with this library; if not, write to the Free Software
      16             : // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
      17             : 
      18             : 
      19             : 
      20             : #ifndef LIBMESH_CELL_INF_HEX8_H
      21             : #define LIBMESH_CELL_INF_HEX8_H
      22             : 
      23             : #include "libmesh/libmesh_config.h"
      24             : 
      25             : #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
      26             : 
      27             : // Local includes
      28             : #include "libmesh/cell_inf_hex.h"
      29             : 
      30             : namespace libMesh
      31             : {
      32             : 
      33             : /**
      34             :  * The \p InfHex8 is an infinite element in 3D composed of 8 nodes.
      35             :  * It is numbered like this:
      36             :  * \verbatim
      37             :  *   INFHEX8: 7        6                             z^  / y
      38             :  *            o        o    closer to infinity        | /
      39             :  *            :        |                              |/
      40             :  *            :        |                              +----> x
      41             :  *       4    :   5    |
      42             :  *        o   :    o   |
      43             :  *        |   o....|...o 2
      44             :  *        |  .3    |  /
      45             :  *        | .      | /
      46             :  *        |.       |/       base face
      47             :  *        o--------o
      48             :  *        0        1
      49             :  * \endverbatim
      50             :  *
      51             :  * \author Daniel Dreyer
      52             :  * \date 2002
      53             :  * \brief A 3D infinite hexahedral element with 8 nodes.
      54             :  */
      55             : class InfHex8 final : public InfHex
      56             : {
      57             : public:
      58             : 
      59             :   /**
      60             :    * Constructor.  By default this element has no parent.
      61             :    */
      62             :   explicit
      63        1562 :   InfHex8 (Elem * p=nullptr) :
      64        1562 :     InfHex(num_nodes, p, _nodelinks_data)
      65        1562 :   {}
      66             : 
      67             :   InfHex8 (InfHex8 &&) = delete;
      68             :   InfHex8 (const InfHex8 &) = delete;
      69             :   InfHex8 & operator= (const InfHex8 &) = delete;
      70             :   InfHex8 & operator= (InfHex8 &&) = delete;
      71        3714 :   virtual ~InfHex8() = default;
      72             : 
      73             :   /**
      74             :    * \returns 8.  The \p InfHex8 has 8 nodes.
      75             :    */
      76      751029 :   virtual unsigned int n_nodes() const override { return num_nodes; }
      77             : 
      78             :   /**
      79             :    * \returns \p INFHEX8.
      80             :    */
      81      305937 :   virtual ElemType type() const override { return INFHEX8; }
      82             : 
      83             :   /**
      84             :    * \returns 1.
      85             :    */
      86           0 :   virtual unsigned int n_sub_elem() const override { return 1; }
      87             : 
      88             :   /**
      89             :    * \returns \p true if the specified (local) node number is on the
      90             :    * specified side.
      91             :    */
      92             :   virtual bool is_node_on_side(const unsigned int n,
      93             :                                const unsigned int s) const override;
      94             : 
      95             :   virtual std::vector<unsigned int> nodes_on_side(const unsigned int s) const override;
      96             : 
      97             :   virtual std::vector<unsigned int> nodes_on_edge(const unsigned int e) const override;
      98             : 
      99             :   /**
     100             :    * \returns \p true if the specified (local) node number is on the
     101             :    * specified edge.
     102             :    */
     103             :   virtual bool is_node_on_edge(const unsigned int n,
     104             :                                const unsigned int e) const override;
     105             : 
     106             :   /**
     107             :    * \returns FIRST.
     108             :    */
     109             :   virtual Order default_order() const override;
     110             : 
     111             :   /**
     112             :    * \returns A \p QUAD4 built coincident with face 0, or an \p INFQUAD4
     113             :    * built coincident with faces 1 to 4.
     114             :    *
     115             :    * \note that the \p std::unique_ptr<Elem> takes care of freeing memory.
     116             :    */
     117             :   virtual std::unique_ptr<Elem> build_side_ptr (const unsigned int i) override;
     118             : 
     119             :   /**
     120             :    * Rebuilds a \p QUAD4 built coincident with face 0, or an \p INFQUAD4
     121             :    * built coincident with faces 1 to 4.
     122             :    */
     123             :   virtual void build_side_ptr (std::unique_ptr<Elem> & elem,
     124             :                                const unsigned int i) override;
     125             : 
     126             :   // Avoid hiding deprecated version with different signature
     127             :   using Elem::build_side_ptr;
     128             : 
     129             :   /**
     130             :    * \returns An \p EDGE2 built coincident with edges 0 to 3, or an \p INFEDGE2
     131             :    * built coincident with edges 4 to 7.
     132             :    *
     133             :    * \note The \p std::unique_ptr<Elem> takes care of freeing memory.
     134             :    */
     135             :   virtual std::unique_ptr<Elem> build_edge_ptr (const unsigned int i) override;
     136             : 
     137             :   /**
     138             :    * Rebuilds a \p EDGE2 built coincident with edges 0 to 3, or \p
     139             :    * INFEDGE2 built coincident with edges 4 to 11.
     140             :    */
     141             :   virtual void build_edge_ptr (std::unique_ptr<Elem> & edge, const unsigned int i) override;
     142             : 
     143             :   virtual void connectivity(const unsigned int sc,
     144             :                             const IOPackage iop,
     145             :                             std::vector<dof_id_type> & conn) const override;
     146             : 
     147             :   unsigned int vtk_element_type (const unsigned int) const
     148             :   { return 12; }
     149             : 
     150             :   /**
     151             :    * Geometric constants for InfHex8.
     152             :    */
     153             :   static const int num_nodes = 8;
     154             :   static const int nodes_per_side = 4;
     155             :   static const int nodes_per_edge = 2;
     156             : 
     157             :   /**
     158             :    * This maps the \f$ j^{th} \f$ node of the \f$ i^{th} \f$ side to
     159             :    * element node numbers.
     160             :    */
     161             :   static const unsigned int side_nodes_map[num_sides][nodes_per_side];
     162             : 
     163             :   /**
     164             :    * This maps the \f$ j^{th} \f$ node of the \f$ i^{th} \f$ side to
     165             :    * element node numbers.
     166             :    */
     167             :   static const unsigned int edge_nodes_map[num_edges][nodes_per_edge];
     168             : 
     169             :   virtual void permute(unsigned int perm_num) override final;
     170             : 
     171             :   virtual void flip(BoundaryInfo *) override final;
     172             : 
     173             :   ElemType side_type (const unsigned int s) const override final;
     174             : 
     175             : protected:
     176             : 
     177             :   /**
     178             :    * Data for links to nodes.
     179             :    */
     180             :   Node * _nodelinks_data[num_nodes];
     181             : 
     182             : 
     183             : 
     184             : #ifdef LIBMESH_ENABLE_AMR
     185             : 
     186             :   /**
     187             :    * Matrix used to create the elements children.
     188             :    */
     189       16720 :   virtual Real embedding_matrix (const unsigned int i,
     190             :                                  const unsigned int j,
     191             :                                  const unsigned int k) const override
     192       16720 :   { return _embedding_matrix[i][j][k]; }
     193             : 
     194             :   /**
     195             :    * Matrix that computes new nodal locations/solution values
     196             :    * from current nodes/solution.
     197             :    */
     198             :   static const Real _embedding_matrix[num_children][num_nodes][num_nodes];
     199             : 
     200       45200 :   LIBMESH_ENABLE_TOPOLOGY_CACHES;
     201             : 
     202             : #endif // LIBMESH_ENABLE_AMR
     203             : 
     204             : };
     205             : 
     206             : } // namespace libMesh
     207             : 
     208             : #endif  // ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
     209             : 
     210             : #endif // LIBMESH_CELL_INF_HEX8_H