feedtwin.vessels.tank.TankState Class Reference

Public Member Functions
TankState	repressurised (self)

Static Public Attributes
float	contact_time = 0.0
float	vapour_mass = 0.0
float	wetted_wall_temperature = None
float	surface_temperature = None

Detailed Description

Everything needed to continue a tank's history.

Args:
    ullage: Gas state -- mass, total internal energy, wall temperature.
    liquid_mass: Propellant remaining [kg].
    liquid_temperature: Bulk liquid temperature [K].
    contact_time: Seconds the current interface has been exposed to warm
        gas. Reset by a repressurisation, which is why it is state and not
        a clock reading -- see :mod:`feedtwin.vessels.collapse`.

Definition at line 58 of file tank.py.

Member Function Documentation

repressurised()

TankState feedtwin.vessels.tank.TankState.repressurised

(

self

)

The same state with the interface clock reset.

What a repressurisation immediately before ignition buys: fresh gas
scrubs the chilled surface layer away, and the sqrt(t) flux restarts at
its steepest. Modelling the reset is the difference between predicting
a pad hold correctly and predicting it as if the tank had just been
filled.

Definition at line 105 of file tank.py.

Member Data Documentation

contact_time

float feedtwin.vessels.tank.TankState.contact_time = 0.0

static

Definition at line 73 of file tank.py.

surface_temperature

float feedtwin.vessels.tank.TankState.surface_temperature = None

static

Definition at line 93 of file tank.py.

vapour_mass

float feedtwin.vessels.tank.TankState.vapour_mass = 0.0

static

Definition at line 74 of file tank.py.

wetted_wall_temperature

float feedtwin.vessels.tank.TankState.wetted_wall_temperature = None

static

Definition at line 79 of file tank.py.

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

• lib/feedtwin/feedtwin/vessels/tank.py