Rohsenow Correlation for Pool Nucleate Boiling
The Rohsenow correlation (Ref. 21) gives an estimation of the heat flux due to nucleate boiling. It reads
(4-203)
where:
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μl, ρl, kl, and Cp,l are the viscosity, density, thermal conductivity, and heat capacity of the liquid phase of the fluid, measured at Tsat
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ρv is the density of the saturated vapor of the fluid
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Lv is the latent heat of vaporization
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g is the gravitational acceleration
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σ is the surface tension of the liquid in contact with its own vapor
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T is the temperature of the solid surface
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Tsat is the saturation temperature of the fluid
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s is an empirical constant, equal to 1 for water, and set to 1.7 for other fluids in Ref. 21, Ref. 41, and Ref. 42
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Csf is an empirical constant accounting for the combination of liquid and surface materials, and for the surface finishing. See Ref. 21, Ref. 41, and Ref. 42 for values of this constant for several combinations.
Note that the correlation is valid for values of gravitational acceleration from 1 to 10 m/s2, and for clean surfaces. It is insensitive to the shape and orientation of the surface.