Bartz

fullflow.Bartz

Bartz gas-side convective heat transfer coefficient correlation.

Bartz computes the gas-side convective heat transfer coefficient for compressible flow in rocket thrust chambers and nozzles. The implementation uses chamber transport properties and a mean-temperature correction factor to account for local property variation near the wall.

Parameters

Name	Type	Description
name	str	Component name
network	Network	Network that owns this component
mass_flow	State	Local mass flow rate. The absolute value is used
hydraulic_diameter	State or float	Local hydraulic diameter or equivalent nozzle diameter
chamber_specific_heat_cp	State	Specific heat capacity evaluated at stagnation conditions
chamber_prandtl_number	State	Prandtl number evaluated at stagnation conditions
chamber_dynamic_viscosity	State	Dynamic viscosity evaluated at stagnation conditions
local_freestream_density	State	Local gas density at the evaluation location
mean_temperature_density	State	Gas density evaluated at the arithmetic mean temperature
mean_temperature_dynamic_viscosity	State	Dynamic viscosity evaluated at the arithmetic mean temperature
throat_converging_radius	float, optional	Radius of curvature of the throat converging section
convection_coefficient	State, optional	Gas-side convective heat transfer coefficient

Outputs

Name	Type	Description
convection_coefficient	State, optional	Gas-side convective heat transfer coefficient. If omitted, a new State is created