emissions¶
class description¶
-
class
emissions.
Emissions
(**kwargs)[source]¶ Bases:
openmdao.core.explicitcomponent.ExplicitComponent
Compute emission characteristics of engine on the trajectory.
The Emissions component requires the following inputs:
inputs['Tti_c_star']
: combustor inlet temperature (re. T_0) [-]inputs['Pti_c_star']
: combustor inlet pressure (re. p_0) [-]inputs['W_f']
: engine fuel flow [kg/s]inputs['p_0']
: ambient pressure [Pa]inputs['T_0']
: ambient temperature [K]inputs['t_s']
: source time [s]
The Emissions component computes the following outputs:
outputs['EINOx']
: NOx emission index [g/kg fuel]outputs['m_NOx']
: Total mass of NOx emitted on the trajectory [kg]
-
compute
(inputs: openmdao.vectors.default_vector.DefaultVector, outputs: openmdao.vectors.default_vector.DefaultVector)[source]¶ Compute outputs given inputs. The model is assumed to be in an unscaled state.
- Parameters
inputs (Vector) – Unscaled, dimensional input variables read via inputs[key].
outputs (Vector) – Unscaled, dimensional output variables read via outputs[key].
discrete_inputs (dict or None) – If not None, dict containing discrete input values.
discrete_outputs (dict or None) – If not None, dict containing discrete output values.
-
compute_partials
(inputs, partials)[source]¶ Compute sub-jacobian parts. The model is assumed to be in an unscaled state.
- Parameters
inputs (Vector) – Unscaled, dimensional input variables read via inputs[key].
partials (Jacobian) – Sub-jac components written to partials[output_name, input_name]..
discrete_inputs (dict or None) – If not None, dict containing discrete input values.
theory¶
The combustor emissions along the trajectory are computed using the \(P_3-T_3\) method.