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首页> 外文期刊>International Journal of Heat and Mass Transfer >Fluctuation nucleation rate at limiting stretchings
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Fluctuation nucleation rate at limiting stretchings

机译：极限拉伸时的波动成核速率

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摘要

The dynamics of an initially critical bubble after a small (as small as is wished) perturbation of its radius has been examined. Dependences of the radius, the vapor pressure and the rate of change of the bubble radius on the time from the perturbation instant have been obtained. As a result, a new formula for the specific nucleation rate in stretched and superheated liquids has been deduced with the help of the well-known theory of fluctuation nucleation. To check the formula suggested, experiments were conducted on the superheating of Freon 11 and dodecane in the pressure range from -10 MPa to +1 MPa. A satisfactory agreement between calculation and experiment has been obtained, which gives grounds to suggest using the comparatively simple formula obtained in the practice of calculating the dynamics of explosive boiling-up. (C) 2019 Elsevier Ltd. All rights reserved.
机译：在检查了其半径的微小（如希望的那样小）扰动之后，初始临界气泡的动力学已经得到了检验。已经获得了半径，蒸气压和气泡半径的变化率与从摄动瞬间起的时间的关系。结果，借助于众所周知的波动成核理论，推导了用于拉伸和过热液体中的特定成核速率的新公式。为了验证所建​​议的公式，在-10 MPa至+1 MPa的压力范围内对Freon 11和十二烷进行了过热实验。在计算和实验之间已经获得了令人满意的协议，这为使用在计算爆炸沸腾动力学的实践中获得的相对简单的公式提供了依据。 （C）2019 Elsevier Ltd.保留所有权利。

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