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1 : //* This file is part of the MOOSE framework 2 : //* https://mooseframework.inl.gov 3 : //* 4 : //* All rights reserved, see COPYRIGHT for full restrictions 5 : //* https://github.com/idaholab/moose/blob/master/COPYRIGHT 6 : //* 7 : //* Licensed under LGPL 2.1, please see LICENSE for details 8 : //* https://www.gnu.org/licenses/lgpl-2.1.html 9 : 10 : #include "LaplacianSplit.h" 11 : 12 : registerMooseObject("PhaseFieldApp", LaplacianSplit); 13 : 14 : InputParameters 15 78 : LaplacianSplit::validParams() 16 : { 17 78 : InputParameters params = KernelGrad::validParams(); 18 78 : params.addClassDescription( 19 : "Split with a variable that holds the Laplacian of a phase field variable."); 20 156 : params.addRequiredCoupledVar("c", "Field variable to take the Laplacian of"); 21 78 : return params; 22 0 : } 23 : 24 40 : LaplacianSplit::LaplacianSplit(const InputParameters & parameters) 25 40 : : KernelGrad(parameters), _var_c(coupled("c")), _grad_c(coupledGradient("c")) 26 : { 27 40 : } 28 : 29 : RealGradient 30 1077800 : LaplacianSplit::precomputeQpResidual() 31 : { 32 1077800 : return _grad_c[_qp]; // * _grad_test[_i][_qp] 33 : } 34 : 35 : RealGradient 36 3220800 : LaplacianSplit::precomputeQpJacobian() 37 : { 38 3220800 : return 0.0; 39 : } 40 : 41 : Real 42 12883200 : LaplacianSplit::computeQpOffDiagJacobian(unsigned int jvar) 43 : { 44 12883200 : if (jvar == _var_c) 45 12883200 : return _grad_phi[_j][_qp] * _grad_test[_i][_qp]; 46 : 47 : return 0.0; 48 : }