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             : #include "libmesh/tensor_tools.h"
      19             : #include "libmesh/vector_value.h"
      20             : #include "libmesh/tensor_value.h"
      21             : #include "libmesh/type_n_tensor.h"
      22             : 
      23             : namespace libMesh
      24             : {
      25             : namespace TensorTools
      26             : {
      27             : // Needed for ExactSolution to compile
      28           0 : Number curl_from_grad(const VectorValue<Number> &)
      29             : {
      30           0 :   libmesh_error_msg("Operation not defined for scalar quantities.");
      31             : }
      32             : 
      33    10648428 : VectorValue<Number> curl_from_grad(const TensorValue<Number> & grad)
      34             : {
      35    10648428 :   const Number duz_dy = grad(2,1);
      36    10648428 :   const Number duy_dz = grad(1,2);
      37    10648428 :   const Number dux_dz = grad(0,2);
      38    10648428 :   const Number duz_dx = grad(2,0);
      39    10648428 :   const Number duy_dx = grad(1,0);
      40    10648428 :   const Number dux_dy = grad(0,1);
      41             : 
      42     8873690 :   return VectorValue<Number>(duz_dy - duy_dz,
      43     8873690 :                              dux_dz - duz_dx,
      44    11535797 :                              duy_dx - dux_dy);
      45             : }
      46             : 
      47             : // Needed for ExactSolution to compile. Will implement when needed.
      48           0 : TensorValue<Number> curl_from_grad( const TypeNTensor<3,Number> & /* grad */ )
      49             : {
      50           0 :   libmesh_not_implemented();
      51             : }
      52             : 
      53             : // Needed for ExactSolution to compile
      54           0 : Number div_from_grad( const VectorValue<Number> & /* grad */ )
      55             : {
      56           0 :   libmesh_error_msg("Operation not defined for scalar quantities.");
      57             : }
      58             : 
      59    10648428 : Number div_from_grad( const TensorValue<Number> & grad )
      60             : {
      61    10648428 :   const Number dux_dx = grad(0,0);
      62    10648428 :   const Number duy_dy = grad(1,1);
      63    10648428 :   const Number duz_dz = grad(2,2);
      64             : 
      65    10648428 :   return dux_dx + duy_dy + duz_dz;
      66             : }
      67             : 
      68             : // Needed for ExactSolution to compile. Will implement when needed.
      69           0 : VectorValue<Number> div_from_grad( const TypeNTensor<3,Number> & /* grad */ )
      70             : {
      71           0 :   libmesh_not_implemented();
      72             : }
      73             : 
      74             : }
      75             : }