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_FACE_INF_QUAD6_H
      21             : #define LIBMESH_FACE_INF_QUAD6_H
      22             : 
      23             : 
      24             : #include "libmesh/libmesh_config.h"
      25             : 
      26             : #ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
      27             : 
      28             : // Local includes
      29             : #include "libmesh/face_inf_quad.h"
      30             : 
      31             : namespace libMesh
      32             : {
      33             : 
      34             : /**
      35             :  * The \p INFQUAD6 is an infinite element in 2D composed of 6 nodes.
      36             :  * It is numbered like this:
      37             :  * \verbatim
      38             :  *             2     5     3
      39             :  *   INFQUAD6: o     o     o   closer to infinity
      40             :  *             |           |
      41             :  *             |           |
      42             :  *             |           |
      43             :  *             |           |
      44             :  *             |           |
      45             :  *             o-----o-----o   base side
      46             :  *             0     4     1
      47             :  * \endverbatim
      48             :  *
      49             :  * \author Daniel Dreyer
      50             :  * \date 2002
      51             :  * \brief A 2D infinite quadrilateral element with 6 nodes.
      52             :  */
      53             : class InfQuad6 : public InfQuad
      54             : {
      55             : public:
      56             : 
      57             :   /**
      58             :    * Constructor.  By default this element has no parent.
      59             :    */
      60             :   explicit
      61         929 :   InfQuad6 (Elem * p=nullptr):
      62         929 :     InfQuad(num_nodes, p, _nodelinks_data) {}
      63             : 
      64             :   InfQuad6 (InfQuad6 &&) = delete;
      65             :   InfQuad6 (const InfQuad6 &) = delete;
      66             :   InfQuad6 & operator= (const InfQuad6 &) = delete;
      67             :   InfQuad6 & operator= (InfQuad6 &&) = delete;
      68         985 :   virtual ~InfQuad6() = default;
      69             : 
      70             :   /**
      71             :    * \returns 6.
      72             :    */
      73       14420 :   virtual unsigned int n_nodes() const override { return num_nodes; }
      74             : 
      75             :   /**
      76             :    * \returns \p INFQUAD6.
      77             :    */
      78         939 :   virtual ElemType type () const override { return INFQUAD6; }
      79             : 
      80             :   /**
      81             :    * \returns 2.
      82             :    */
      83           0 :   virtual unsigned int n_sub_elem() const override { return 2; }
      84             : 
      85             :   /**
      86             :    * \returns \p true if the specified (local) node number is on the
      87             :    * specified side.
      88             :    */
      89             :   virtual bool is_node_on_side(const unsigned int n,
      90             :                                const unsigned int s) const override;
      91             : 
      92             :   virtual std::vector<unsigned int> nodes_on_side(const unsigned int s) const override;
      93             : 
      94             :   virtual std::vector<unsigned int> nodes_on_edge(const unsigned int e) const override;
      95             : 
      96             :   /**
      97             :    * \returns \p true if the specified (local) node number is on the
      98             :    * specified edge (== is_node_on_side in 2D).
      99             :    */
     100          14 :   virtual bool is_node_on_edge(const unsigned int n,
     101             :                                const unsigned int e) const override
     102          14 :   { return this->is_node_on_side(n,e); }
     103             : 
     104             :   /**
     105             :    * \returns \p SECOND.
     106             :    */
     107             :   virtual Order default_order() const override;
     108             : 
     109             :   /**
     110             :    * Don't hide Elem::key() defined in the base class.
     111             :    */
     112             :   using Elem::key;
     113             : 
     114             :   /**
     115             :    * \returns An id associated with the \p s side of this element.
     116             :    * The id is not necessarily unique, but should be close.
     117             :    *
     118             :    * We override this function to return a key for the Edge3 side
     119             :    * which is consistent which Edge3::key().
     120             :    */
     121             :   virtual dof_id_type key (const unsigned int s) const override;
     122             : 
     123             :   /**
     124             :    * \returns \p InfQuad6::side_nodes_map[side][side_node] after doing some range checking.
     125             :    */
     126             :   virtual unsigned int local_side_node(unsigned int side,
     127             :                                        unsigned int side_node) const override;
     128             : 
     129             :   /**
     130             :    * \returns An \p Edge3 for the base (0) side, and an \p InfEdge2 for
     131             :    * the sides 1, 2.
     132             :    */
     133             :   virtual std::unique_ptr<Elem> build_side_ptr (const unsigned int i) override;
     134             : 
     135             :   /**
     136             :    * Rebuilds an EDGE3 or INFEDGE2 coincident with face i.
     137             :    */
     138             :   virtual void build_side_ptr (std::unique_ptr<Elem> & elem,
     139             :                                const unsigned int i) override;
     140             : 
     141             :   // Avoid hiding deprecated version with different signature
     142             :   using Elem::build_side_ptr;
     143             : 
     144             :   virtual void connectivity(const unsigned int sf,
     145             :                             const IOPackage iop,
     146             :                             std::vector<dof_id_type> & conn) const override;
     147             : 
     148             :   /**
     149             :    * \returns 2 for all \p n.
     150             :    */
     151           0 :   virtual unsigned int n_second_order_adjacent_vertices (const unsigned int) const override
     152           0 :   { return 2; }
     153             : 
     154             :   /**
     155             :    * \returns The element-local number of the \f$ v^{th} \f$ vertex
     156             :    * that defines the \f$ n^{th} \f$ second-order node.
     157             :    *
     158             :    * \note \p n is counted as depicted above, \f$ 4 \le n < 6 \f$.
     159             :    */
     160             :   virtual unsigned short int second_order_adjacent_vertex (const unsigned int n,
     161             :                                                            const unsigned int v) const override;
     162             : 
     163             :   /**
     164             :    * \returns The child number \p c and element-local index \p v of
     165             :    * the \f$ n^{th} \f$ second-order node on the parent element.  See
     166             :    * elem.h for further details.
     167             :    */
     168             :   virtual std::pair<unsigned short int, unsigned short int>
     169             :   second_order_child_vertex (const unsigned int n) const override;
     170             : 
     171             :   /**
     172             :    * Geometric constants for InfQuad6.
     173             :    */
     174             :   static const int num_nodes = 6;
     175             :   static const int nodes_per_side = 3;
     176             : 
     177             :   /**
     178             :    * This maps the \f$ j^{th} \f$ node of the \f$ i^{th} \f$ side to
     179             :    * element node numbers.
     180             :    */
     181             :   static const unsigned int side_nodes_map[num_sides][nodes_per_side];
     182             : 
     183             :   ElemType side_type (const unsigned int s) const override final;
     184             : 
     185             :   virtual void flip(BoundaryInfo *) override final;
     186             : 
     187             : protected:
     188             : 
     189             :   /**
     190             :    * Data for links to nodes.
     191             :    */
     192             :   Node * _nodelinks_data[num_nodes];
     193             : 
     194             : 
     195             : 
     196             : #ifdef LIBMESH_ENABLE_AMR
     197             : 
     198             :   /**
     199             :    * Matrix used to create the elements children.
     200             :    */
     201         800 :   virtual Real embedding_matrix (const unsigned int i,
     202             :                                  const unsigned int j,
     203             :                                  const unsigned int k) const override
     204         800 :   { return _embedding_matrix[i][j][k]; }
     205             : 
     206             :   /**
     207             :    * Matrix that computes new nodal locations/solution values
     208             :    * from current nodes/solution.
     209             :    */
     210             :   static const Real _embedding_matrix[num_children][num_nodes][num_nodes];
     211             : 
     212         860 :   LIBMESH_ENABLE_TOPOLOGY_CACHES;
     213             : 
     214             : #endif // LIBMESH_ENABLE_AMR
     215             : 
     216             : private:
     217             : 
     218             :   /**
     219             :    * Matrix that tells which vertices define the location
     220             :    * of mid-side (or second-order) nodes
     221             :    */
     222             :   static const unsigned short int _second_order_adjacent_vertices[2][2];
     223             : };
     224             : 
     225             : 
     226             : } // namespace libMesh
     227             : 
     228             : #endif // ifdef LIBMESH_ENABLE_INFINITE_ELEMENTS
     229             : 
     230             : #endif // LIBMESH_FACE_INF_QUAD6_H