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首页> 外文期刊>International Journal of Heat and Mass Transfer >Numerical study on the phase change heat transfer of LNG in glass wool based on the VOF method
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Numerical study on the phase change heat transfer of LNG in glass wool based on the VOF method

机译：基于VOF法的玻璃棉中LNG相变传热的数值研究

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In this study, the evaporation of a cryogenic gas in an insulating porous medium was investigated numerically and experimentally. The flow and heat transfer characteristics around the evaporating cryogenic gas in such a medium were analyzed based on the VOF (Volume of Fluid) method. The thermal leakage through the porous medium to the outer shell was then analyzed using heat transfer considerations. To support the numerical results, an experiment was then performed using LNG (Liquefied Natural Gas) as the fluid and glass wool as the porous medium. The numerical results for the outer shell temperature predict the experimental values well. Based on the validated numerical results, the transient behavior of temperature distribution in outer shell is analyzed. The effect of crack size on the reliability of insulation system is investigated. In addition, the behavior of the virtual evaporation velocity and the liquid film area was considered qualitatively. This work sheds light on technology related to cryogenic storage systems by suggesting a systematic method for predicting the temperature of the outer shell, the liquid film area, and virtual evaporation velocity.
机译：在这项研究中，在数值上和实验上研究了低温气体在绝缘多孔介质中的蒸发。基于VOF（流体体积）法分析了在这种介质中蒸发的低温气体周围的流动和传热特性。然后使用传热考虑因素分析通过多孔介质到外壳的热泄漏。为了支持数值结果，然后使用LNG（液化天然气）作为流体，并使用玻璃棉作为多孔介质进行了实验。外壳温度的数值结果很好地预测了实验值。基于验证的数值结果，分析了外壳温度分布的瞬态行为。研究了裂纹尺寸对绝缘系统可靠性的影响。另外，定性地考虑了虚拟蒸发速度和液膜面积的行为。这项工作提出了一种用于预测外壳温度，液膜面积和虚拟蒸发速度的系统方法，从而阐明了与低温存储系统相关的技术。

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