Natural Convection

fullflow.NaturalConvection

Empirical natural-convection heat transfer coefficient.

NaturalConvection computes a natural-convection heat transfer coefficient using a simple Rayleigh-number power-law correlation. The coefficient changes depending on whether the estimated Rayleigh number is below or above the turbulent transition threshold.

Parameters

Name	Type	Description
name	str	Component name
network	Network	Network that owns this component
wall_temperature	State	Wall temperature
fluid_temperature	State	Fluid temperature
characteristic_length	State or float	Characteristic length
fluid_density	State	Fluid density
fluid_specific_heat	State	Fluid specific heat capacity
fluid_dynamic_viscosity	State	Fluid dynamic viscosity
fluid_conductivity	State	Fluid thermal conductivity
thermal_expansion_coefficient	State	Volumetric thermal expansion coefficient
gravity	State or float, optional	Gravitational acceleration
grashof_number	State or float, optional	Output Grashof number
prandtl_number	State or float, optional	Output Prandtl number
rayleigh_number	State or float, optional	Output Rayleigh number
nusselt_number	State or float, optional	Output Nusselt number

Outputs

Name	Type	Description
convection_coefficient	State, optional	Convective heat transfer coefficient. If omitted, a new State is created