Restoring coupled grad aux

include/auxkernels/CoupledGradAux.h

+/****************************************************************/
+/*               DO NOT MODIFY THIS HEADER                      */
+/* MOOSE - Multiphysics Object Oriented Simulation Environment  */
+/*                                                              */
+/*           (c) 2010 Battelle Energy Alliance, LLC             */
+/*                   ALL RIGHTS RESERVED                        */
+/*                                                              */
+/*          Prepared by Battelle Energy Alliance, LLC           */
+/*            Under Contract No. DE-AC07-05ID14517              */
+/*            With the U. S. Department of Energy               */
+/*                                                              */
+/*            See COPYRIGHT for full restrictions               */
+/****************************************************************/
+
+#ifndef COUPLEDGRADAUX_H
+#define COUPLEDGRADAUX_H
+
+#include "AuxKernel.h"
+
+
+//Forward Declarations
+class CoupledGradAux;
+
+template<>
+InputParameters validParams<CoupledGradAux>();
+
+/**
+ * Coupled auxiliary gradient
+ */
+class CoupledGradAux : public AuxKernel
+{
+public:
+
+  /**
+   * Factory constructor, takes parameters so that all derived classes can be built using the same
+   * constructor.
+   */
+  CoupledGradAux(const InputParameters & parameters);
+
+  virtual ~CoupledGradAux();
+
+protected:
+  virtual Real computeValue();
+
+  /// Gradient being set by this kernel
+  RealGradient _grad;
+  /// The number of coupled variable
+  int _coupled;
+  /// The value of coupled gradient
+  const VariableGradient & _coupled_grad;
+  /// Thermal conductivity (diffusion coefficient)
+  const MaterialProperty<Real> & _diffusion_coefficient;
+};
+
+#endif //COUPLEDGRADAUX_H

src/auxkernels/CoupledGradAux.C

+/****************************************************************/
+/*               DO NOT MODIFY THIS HEADER                      */
+/* MOOSE - Multiphysics Object Oriented Simulation Environment  */
+/*                                                              */
+/*           (c) 2010 Battelle Energy Alliance, LLC             */
+/*                   ALL RIGHTS RESERVED                        */
+/*                                                              */
+/*          Prepared by Battelle Energy Alliance, LLC           */
+/*            Under Contract No. DE-AC07-05ID14517              */
+/*            With the U. S. Department of Energy               */
+/*                                                              */
+/*            See COPYRIGHT for full restrictions               */
+/****************************************************************/
+
+#include "CoupledGradAux.h"
+
+template<>
+InputParameters validParams<CoupledGradAux>()
+{
+  InputParameters params = validParams<AuxKernel>();
+
+  params.addRequiredCoupledVar("coupled", "Coupled gradient for calculation");
+  params.addParam<MaterialPropertyName>("diffusion_coefficient_name",
+                                        "thermal_conductivity",
+                                        "Property name of the diffusivity (Default: thermal_conductivity)");
+  return params;
+}
+
+CoupledGradAux::CoupledGradAux(const InputParameters & parameters) :
+    AuxKernel(parameters),
+    _coupled(coupled("coupled")),
+    _coupled_grad(coupledGradient("coupled")),
+    _diffusion_coefficient(getMaterialProperty<Real>("diffusion_coefficient_name"))
+{
+}
+
+CoupledGradAux::~CoupledGradAux()
+{
+}
+
+Real
+CoupledGradAux::computeValue()
+{
+  return _coupled_grad[_qp].norm() * _diffusion_coefficient[_qp];
+}

src/base/GiraffeApp.C

@@ -19,6 +19,9 @@
 #include "NekExecutioner.h"
 #include "NekTimeStepper.h"
 
+// AuxKernels
+#include "CoupledGradAux.h"
+
 template <>
 InputParameters
 validParams<GiraffeApp>()
@@ -65,6 +68,8 @@ GiraffeApp::registerObjects(Factory & factory)
 
     registerExecutioner(NekExecutioner);
     registerTimeStepper(NekTimeStepper);
+
+    registerAuxKernel(CoupledGradAux);
 }
 
 void