Nucleate boiling |
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Authors: | B P Avksentyuk |
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Affiliation: | (1) Institute of Thermophysics, Siberian Branch, Academy of Sciences of the USSR, Novosibirsk |
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Abstract: | The study deals with the effect of the surface conditions on the nucleate boiling curve. A relation is proposed which describes the complete nucleate boiling curve.Notation q
thermal flux
- q*
thermal flux at which the liquid boils after one-phase convection
- qc
thermal flux during one-phase convection
- qcr1, qcr2
first and the second critical thermal flux
- T
saturation temperature
- T
superheat of the heating surface relative to the saturation temperature
- T*
superheat prior to boiling of the liquid after one-phase convection
- Tcr1
superheat during the first boiling crisis
- Tcr3min
minimum superheat at which the third boiling crisis can occur
- P
pressure
- Pcr
critical pressure
-
heat transfer coefficient during nucleate boiling
- Rcr
radius of a critical vapor forming nucleus
-
coefficient of surface tension
- r
latent heat of evaporation
-
thermal conductivity of the liquid
-
kinematic viscosity of the liquid
-
, ![rgr](/content/p003324747x1w4g4/xxlarge961.gif)
densities of the liquid and the vapor
- g
gravitational constant
- k
Boltzmann constant
- N
Avogadro number
- h
Planck's constant
Translated from Inzhenerno-Fizicheskii Zhurnal, Vol. 40, No. 3, pp. 394–401, March, 1981. |
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Keywords: | |
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