feedtwin.comps.manifold.ManifoldBranch Class Reference

Inheritance diagram for feedtwin.comps.manifold.ManifoldBranch:

Collaboration diagram for feedtwin.comps.manifold.ManifoldBranch:

Public Member Functions
None	__init__ (self, ComponentInstance instance, ManifoldPort port)
float	pressure_drop (self, float mdot, FlowConditions flow)
float	static_head (self, FlowConditions flow)
dict[str, float]	diagnostics (self, float mdot, FlowConditions flow)
Public Member Functions inherited from feedtwin.comps.base.HydraulicComponent
None	__init__ (self, ComponentInstance instance)
str	id (self)
str	type (self)
float	total_dp (self, float mdot, FlowConditions flow)
float	signal (self, FlowConditions flow, str name, float default=1.0)
bool	isolates (self, Mapping[str, float]|None signals=None)
float|None	flow_ceiling (self, FlowConditions flow)
float|None	pinned_flow (self, float dp_available, FlowConditions flow)
bool	is_choked (self, float dp_available, FlowConditions flow)
list[Violation]	check (self)
int	n_residuals (self)
Sequence[float]	residuals (self, EvalContext ctx)
Mapping[str, float]	outputs (self, EvalContext ctx)
FlowConditions	conditions (self, PortState port, Mapping[str, float] signals)
str	__repr__ (self)

Public Attributes
	port = port
Public Attributes inherited from feedtwin.comps.base.HydraulicComponent
	instance = instance
	p = instance.si_params()
	opt = dict(instance.options)

Additional Inherited Members
Static Public Attributes inherited from feedtwin.comps.base.HydraulicComponent
str	inlet_port = "inlet"
str	outlet_port = "outlet"
bool	symmetric = False
	conditions_provider = None

Detailed Description

The path from a manifold plenum out through one port.

Built by :func:`expand_manifold` rather than declared directly, because a
manifold is one symbol on a drawing and several branches in a solve. That
asymmetry is the whole point of an assembly.

Definition at line 118 of file manifold.py.

Constructor & Destructor Documentation

__init__()

None feedtwin.comps.manifold.ManifoldBranch.__init__	(		self,
		ComponentInstance	instance,
		ManifoldPort	port )

Definition at line 126 of file manifold.py.

References __init__().

Referenced by __init__().

Member Function Documentation

diagnostics()

dict[str, float] feedtwin.comps.manifold.ManifoldBranch.diagnostics	(		self,
		float	mdot,
		FlowConditions	flow )

Derived quantities worth reporting: velocity, Reynolds number, K.

Never consumed by a solver. This is what a frame and a report show, and
what makes a result inspectable rather than just a number.

Reimplemented from feedtwin.comps.base.HydraulicComponent.

Definition at line 139 of file manifold.py.

References actuator_testing_gui.SensorReceiver.port, combined_gui.UDPReceiver.port, emmc_log_t.port, port, gui.Reader.port, idle_t.port, lc_calibration_gui.LCPlotWindow.port, lc_calibration_gui.UDPReceiver.port, pt_multi_gui.PTPlotWindow.port, pt_multi_gui.UDPReceiver.port, self_test_t.port, sense_testing_gui.UDPReceiver.port, solenoid_characterization_gui.UDPReceiver.port, StarOTA::Config.port, and feedtwin.comps.base.HydraulicComponent.pressure_drop().

pressure_drop()

float feedtwin.comps.manifold.ManifoldBranch.pressure_drop	(		self,
		float	mdot,
		FlowConditions	flow )

Flow-dependent pressure loss [Pa]. Always non-negative.

A *loss*: it opposes the flow, so it lowers the downstream pressure
whichever way the fluid is going. Reverse flow is each component's own
business -- symmetric for a pipe, very much not for a check valve.

Anything that does **not** depend on the direction of flow belongs in
:meth:`static_head`, not here. See that method for why the distinction
is load-bearing rather than tidy.

Reimplemented from feedtwin.comps.base.HydraulicComponent.

Definition at line 130 of file manifold.py.

References actuator_testing_gui.SensorReceiver.port, combined_gui.UDPReceiver.port, emmc_log_t.port, port, gui.Reader.port, idle_t.port, lc_calibration_gui.LCPlotWindow.port, lc_calibration_gui.UDPReceiver.port, pt_multi_gui.PTPlotWindow.port, pt_multi_gui.UDPReceiver.port, self_test_t.port, sense_testing_gui.UDPReceiver.port, solenoid_characterization_gui.UDPReceiver.port, and StarOTA::Config.port.

static_head()

float feedtwin.comps.manifold.ManifoldBranch.static_head	(		self,
		FlowConditions	flow )

Flow-independent pressure change [Pa], signed. Zero for most things.

Elevation is the case that matters: ``rho g dz`` is set by where the
ends of a pipe are, and does not care which way the fluid is going. A
loss reverses sign with the flow; a static head does not.

Conflating the two is silently wrong exactly when it is hardest to
notice -- a network where a branch reverses, which is any recirculation
loop, any vent path, and most transients. Getting it wrong puts the
answer out by ``2 rho g dz`` on that branch, with everything still
converging and conserving mass.

Reimplemented from feedtwin.comps.base.HydraulicComponent.

Definition at line 136 of file manifold.py.

References actuator_testing_gui.SensorReceiver.port, combined_gui.UDPReceiver.port, emmc_log_t.port, port, gui.Reader.port, idle_t.port, lc_calibration_gui.LCPlotWindow.port, lc_calibration_gui.UDPReceiver.port, pt_multi_gui.PTPlotWindow.port, pt_multi_gui.UDPReceiver.port, self_test_t.port, sense_testing_gui.UDPReceiver.port, solenoid_characterization_gui.UDPReceiver.port, and StarOTA::Config.port.

Member Data Documentation

port

feedtwin.comps.manifold.ManifoldBranch.port = port

Definition at line 128 of file manifold.py.

Referenced by calibration_server.ElodinWriter.connect(), diagnostics(), pressure_drop(), calibration_orchestrator.UDPSensorReceiver.run(), combined_fsw_gui.UDPReceiver.run(), imu_calibration_gui.UDPReceiver.run(), and static_head().

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The documentation for this class was generated from the following file:

• lib/feedtwin/feedtwin/comps/manifold.py