An Empirical Modification of Nucleation Theory and Its Application to Boiling Heat Transfer Page: 9 of 38
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Y pcp s /pvX
c Molecular thermal diffusivity, ftZ/hr
Expansion coefficient of the liquid
Kc Boltzmann's constant
p Density, lbm/ft3
6 Surface tension, lb/ft
Dynamic viscosity, lb/(ft)(hr)
v Kinematic viscosity, ft2/hr
E Eddy thermal diffusivity, ftz/hr
Latent heat of vaporization of saturated liquid, Btu/lbm
0o Tw - To, *F
93 Ts - To, subcooling, "F
8s Tw - Ts, superheat, "F
, V Functions of nucleation
0 (D Activation energy
Amax Maximum activation energy
Nu, Pr, Nusselt, Prandtl, Reynolds, Grashof, and Peclet numbers,
Re, Gr, respectively.
v vapor o bulk liquid
s saturated w wall
Physical properties without subscript indicate those of liquid
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Chang, Y. P. An Empirical Modification of Nucleation Theory and Its Application to Boiling Heat Transfer, report, February 1, 1961; United States. (https://digital.library.unt.edu/ark:/67531/metadc863296/m1/9/: accessed May 23, 2019), University of North Texas Libraries, Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.