Material computing a diffusive flux from the gradient of a coupled variable.
virtual void computeQpProperties() override
Users must override this method.
ADMaterialProperty< RealVectorValue > & _flux
Material property storing the flux vector.
static InputParameters validParams()
const ADMaterialProperty< Real > & _diffusivity
Diffusivity.
const ADVariableGradient & _grad_u
Gradient of the coupled variable.
Materials compute MaterialProperties.
const InputParameters & parameters() const
Get the parameters of the object.