Compressible Flow Tube

fullflow.CompressibleFlowTube

Compressible flow tube with longitudinal inertia and friction.

CompressibleFlowTube solves mass flow as an iteration variable using a steady momentum residual between upstream and downstream nodes. The branch supports forward and reverse flow through the longitudinal inertia sign convention.

Parameters

Name	Type	Description
name	str	Component name
network	Network	Network that owns this component
mass_flow	State	Tube mass flow rate
upstream_static_pressure	State	Upstream static pressure
upstream_static_temperature	State	Upstream static temperature
upstream_density	State	Upstream density
downstream_static_pressure	State	Downstream static pressure
downstream_static_temperature	State	Downstream static temperature
downstream_density	State	Downstream density
length	float	Tube length
inner_diameter	float	Tube inner diameter
friction_factor	float, optional	Darcy friction factor
upstream_static_enthalpy	State, optional	Upstream static enthalpy
upstream_speed_of_sound	State, optional	Upstream speed of sound
downstream_speed_of_sound	State, optional	Downstream speed of sound
specific_heat_ratio	State, optional	Specific heat ratio

Outputs

Name	Type	Description
total_enthalpy	State, optional	Upstream total enthalpy
upstream_mach_number	State, optional	Upstream Mach number
downstream_mach_number	State, optional	Downstream Mach number
upstream_total_pressure	State, optional	Upstream total pressure
upstream_total_temperature	State, optional	Upstream total temperature
downstream_total_pressure	State, optional	Downstream total pressure
downstream_total_temperature	State, optional	Downstream total temperature

Iteration Variables

Name	Type	Description
mass_flow	State	Tube mass flow rate

Residuals

Name	Type	Description
momentum_balance	float	Enforces steady one-dimensional momentum balance through the tube pressure_force - friction_force - inertia_force = 0