Pressurized Tank

fullflow.PressurizedTank

Pressurized liquid tank with ullage collapse continuity.

PressurizedTank represents a liquid storage tank pressurized by a gas ullage. The tank pressure is solved such that the change in ullage volume caused by liquid discharge is balanced by incoming pressurant mass.

This formulation is useful for modeling regulated pressurization systems where a pressurant gas replaces discharged liquid volume.

Parameters

Name	Type	Description
name	str	Component name
network	Network	Network that owns this component
pressure	State	Tank pressure
pressurant_density	State	Pressurant gas density
liquid_density	State	Liquid density
collapse_factor	State or float, optional	Empirical ullage collapse factor. Defaults to 1.
ullage_temperature	float, optional	Pressurant ullage temperature
liquid_temperature	float, optional	Bulk liquid temperature
liquid_height	State, optional	Liquid column height above the outlet reference elevation
gravitational_acceleration	State or float, optional	Gravitational acceleration. Defaults to standard gravity.
head_pressure	State, optional	Hydrostatic pressure generated by the liquid column
pressurant_internal_energy	State, optional	Pressurant specific internal energy
liquid_internal_energy	State, optional	Liquid specific internal energy
liquid_enthalpy	State, optional	Liquid specific enthalpy
mass_flow_in	State, optional	Pressurant mass flow rate entering the tank
mass_flow_out	State, optional	Liquid mass flow rate leaving the tank

Iteration Variables

Name	Type	Description
pressure	State	Tank pressure

Residuals

Name	Type	Description
ullage_continuity	float	Enforces pressurant mass conservation. mass_flow_in - collapse_factor * pressurant_density * mass_flow_out / liquid_density = 0 The collapse factor allows the user to account for non-ideal ullage behavior, tank collapse, or empirical corrections.