FELiCS.Equation.Reactions.NOx

FELiCS.Equation.Reactions.NOx#

Module Contents#

Classes#

NOx

Class for computing NO and NO2 source terms based on pre-tabulated data.
class FELiCS.Equation.Reactions.NOx.NOx(P)#

Class for computing NO and NO2 source terms based on pre-tabulated data.

This class uses a CSV table to interpolate reaction source terms for NO and NO2 as a function of the mixture fraction or equivalence ratio (phi). These interpolated values are used to add source terms to the weak form of a finite element formulation.

Initialize the NOx object

Parameters:

P (any) – Placeholder for configuration or context parameter (currently unused).

add_source_to_weak_form(weakform, dQ_threshold=None)#

Add NO and NO2 source terms to the weak form based on interpolated data.

Interpolates pre-tabulated NO and NO2 production rates as a function of the local phi field and assigns them as source terms in the weak form. Optionally filters source terms based on a heat release threshold.

Parameters:

  • weakform (object) – The weak form structure, expected to include test functions v_NO, v_NO2, and solution fields phi and T.

  • dQ_threshold (float, optional) – A threshold for the mean heat release rate; source terms are suppressed where the temperature T is below 1000 K.

Returns:

eq – The assembled weak form with NO and NO2 source terms included.

Return type:

ufl.Form

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