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首页> 外文期刊>International Journal of Heat and Mass Transfer >Temperature fluctuation at twin cavity in nucleate boiling- wavelet analysis and modelling
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Temperature fluctuation at twin cavity in nucleate boiling- wavelet analysis and modelling

机译：核沸腾小波分析和建模中双腔温度波动

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摘要

In the paper the wavelet analysis of heating surface temperature fluctuation at the artificial cavities in nucleate boiling has been carried out. It has been shown that depending on distance between cavities the process of bubbles departure from twin cavity can synchronize and create the unified conditions for heat transfer around the cavities. It has been found that synchronization of interacting cavities leads to decrease in mean frequency of bubbles departure. The new concept of promotion or inhibition of interacting cavities has been defined based on the wavelet analysis. Two-dimensional boiling field was approximated and modeled using CML method. Two mechanisms of interaction between bubble columns have been considered: the thermal and hydrodynamic ones. The simulation shows that thermal interaction between two cavities and bubble columns leads to deactivation of neighboring cavity whereas the hydrodynamic interaction sustains the activity of neighboring cavity.
机译：本文进行了小波分析，分析了核沸腾过程中人造腔内受热面的温度波动。已经显示出，取决于腔之间的距离，气泡从双腔离开的过程可以同步并为腔周围的热传递创造统一的条件。已经发现，相互作用的空腔的同步导致气泡离开的平均频率降低。基于小波分析，已经定义了促进或抑制相互作用腔的新概念。使用CML方法对二维沸腾场进行了近似和建模。已经考虑了鼓泡塔之间相互作用的两种机理：热力学和流体力学。仿真表明，两个空腔和气泡柱之间的热相互作用导致邻近空腔的失活，而流体动力相互作用则维持了邻近空腔的活动。

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