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Characteristics of nucleate boiling under conditions of pulsed heat release at the heater surface

... boiling under conditions of pulsed heat release at the heater surface // Applied Thermal Engineering. Vol.149. 2019. P.1215-1222. DOI: 10.1016/j.applthermaleng.2018.12.126 This paper presents results of the experimental study for the initial stage of the explosive boiling, as well as an attempt to simulate them in order to clarify whether the existing approaches can be extended to the case of the non-stationary heat release. We present data on the onset of nucleate boiling (ONB) and nucleation density ...

Теги: nucleation , explosive boiling , fourier numbers , heater surface , interphase interaction , non-stationary heat release , nucleation densities , numerical algorithms , onset of nucleate boiling , nucleate boi
On modeling of the initial stage of nonstationary nucleate boiling for the high heat fluxes

... the general outcome but other parameters, too. The non-stationary heat release is most difficult for modeling, because many of the existing researches are based on analytical expressions for the fluid temperature distribution. The basic stages of the explosive boiling are: (i) heating of the wall to the nucleation temperature; (ii) nucleation of the isolated bubbles; (iii) merging of bubbles and coverage of the entire surface by the steam phase; (iv) heating of the surface to the Leidenfrost temperature ...

Теги: explosives , heating , momentum transfer , nucleation , analytical expressions , empirical correlations , explosive boiling , leidenfrost temperature , non-stationary heat release , nucleation densities , nucle


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