from sfepy.terms.terms import Term, terms
[docs]
class ElectricSourceTerm( Term ):
r"""
Electric source term.
:Definition:
.. math::
\int_{\Omega} c s (\nabla \phi)^2
:Arguments:
- material : :math:`c` (electric conductivity)
- virtual : :math:`s` (test function)
- parameter : :math:`\phi` (given electric potential)
"""
name = 'dw_electric_source'
arg_types = ('material', 'virtual', 'parameter')
arg_shapes = {'material' : '1, 1', 'virtual' : (1, None), 'parameter' : 1}
function = staticmethod(terms.dw_electric_source)
[docs]
def get_fargs(self, mat, virtual, parameter,
mode=None, term_mode=None, diff_var=None, **kwargs):
vg, _ = self.get_mapping(virtual)
grad = self.get(parameter, 'grad')
return grad, mat, vg