Rocket Regenerative Cooling Heat Flux Calculator (Bartz)

Calculate throat convective heat transfer coefficient (hg), peak thermal heat flux (MW/m²), adiabatic wall recovery temperature, and cooling channel heat uptake.

Chamber Conditions & Throat Geometry

Chamber Pressure Pc (bar):

Stagnation Flame Temp T0 (K):

Throat Diameter Dt (in):

Throat Curvature Radius rc (in):

Gas Properties & Liner Wall Target

Gas Dynamic Viscosity μ0 (Pa·s):

Specific Heat Cp (J/kg·K):

Gas Prandtl Number Pr:

Gas-Side Wall Temp Twg (K): Copper alloy limit ~ 850-950 K

Throat Heat Transfer & Heat Flux

Peak Throat Heat Flux (q"):

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— Btu/in²·s

Gas-Side Heat Transfer Coeff (hg):

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— Btu/in²·s·°F

Adiabatic Wall Recovery Temp (Taw):

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Thermal Stress & Metallurgy Limit:

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Regenerative Cooling Feasibility:

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Rocket Regenerative Cooling Heat Flux Calculator (Bartz)

Chamber Conditions & Throat Geometry

Gas Properties & Liner Wall Target

Throat Heat Transfer & Heat Flux

Frequently Asked Questions

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