プール沸騰に関する研究 : 第1報, Kutateladze-Zuberの限界熱流束に関する式の物理モデルの提案

概要

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The Kutateladze correlation (1948) is widely used to predict critical heat flux (CHF) for various geometries of heated surfaces. A reasonable model which gives the correlation is not yet known. In this paper, the physical implications of the correlation are discussed and a model giving the correlation has been proposed. This model is derived on the basis of the measured diameters of various bubbles and the photographic records of boiling in higher pressures by Semeria (1963). In the model, a macrolayer δ_1 is formed by the coalescence of the secondary bubbles formed by the primary bubbles. Tertiary bubbles formed by the secondary bubbles determine the frequency f of the macrolayer formation. The CHF is determined by the following relation: q_<CHF>=δ_1ρ_lH_<fg>f, where ρ_l is the density of liquid and H_<fg> is the latent heat of evaporation. One of the formulations of the model gives the Kutateladze or Zuber correlation.
一般社団法人日本機械学会の論文
1991-04-25