charge_conservation

openpnm.models.physics.source_terms.charge_conservation(target, phase, p_alg, e_alg, assumption)

Applies the source term on the charge conservation equation when solving for ions transport.

Parameters

• target (OpenPNM Base object) – Object with which this model is associated. This controls the length of the calculated array, and also provides access to other necessary properties.

• p_alg (GenericAlgorithm) – The algorithm used to enforce charge conservation.

• e_alg (list) – The list of algorithms used to solve for transport of different ionic species of the mixture phase.

• assumption (str) –

  The assumption adopted to enforce charge conservation. Options are:

  Options	Description
  poisson	?
  electroneutrality	?
  laplace	?

Returns

rate_info – A dictionary containing the following three items:

Item	Description
rate	The value of the source term function for the given list of algortihms under the provided assumption.
S1	A placeholder (zeros array)
S2	The value of the source term function for the given list of algortihms under the provided assumption (same as ‘rate’).

Return type

dict