shell.build_problem_from_connectivity

shell.build_problem_from_connectivity(
    thermo,
    elements,
    conn,
    area,
    mdot_ref,
    p_ref,
    h_ref,
    edge_models=None,
    composite_map=None,
    require_connected=None,
)

Assemble a CompiledProblem from elements and a prebuilt Connectivity.

Parameters

Name	Type	Description	Default
thermo	ThermoConfig	The thermodynamic model (perfect gas, frozen, or reacting equilibrium).	required
elements	list of ElementSpec	The network elements, in node order.	required
conn	Connectivity	The compiled connectivity, carrying explicit per-edge ports (`tail_port` / `head_port`), so port-ordering conventions are preserved exactly.	required
area	ndarray	Per-edge cross-sectional area, indexed by global edge id.	required
mdot_ref	float	Reference mass flow, pressure and total enthalpy for the residual/variable scaling.	required
p_ref	float	Reference mass flow, pressure and total enthalpy for the residual/variable scaling.	required
h_ref	float	Reference mass flow, pressure and total enthalpy for the residual/variable scaling.	required
edge_models	sequence of int	Per-edge thermo-model id override; `None` uses the config’s model on every edge.	`None`
composite_map	CompositeMap	Bridges the user-facing element ids to the expanded ones when the network carried composite elements (set by :func:`build_problem`); `None` otherwise.	`None`
require_connected	bool	Reject a model that splits into disconnected sub-networks; `None` (default) follows the :data:`nefes.shell.checks.CHECK_CONNECTED` toggle.	`None`

Returns

Name	Type	Description
	CompiledProblem	The immutable compiled problem ready for the solver.