一个水基SiO2纳米流体核态池沸腾数学模型

A Mathematic Model of Nucleate Pool Boiling of SiO2 -Water Nanofluid

中文关键词: 水基SiO₂纳米流体  核态沸腾  数值模拟  汽化核心密度  气泡脱离直径

英文关键词: SiO2 -Water nanofluid  nucleate boiling  numerical simulation  nucleate site density  bubble departure diameter

中文摘要:

      基于水基SiO₂纳米流体沸腾实验研究结果，在双流体多相流模型和热流分区模型(RPI模型)的基础上建立了一个水基SiO₂纳米流体核态池沸腾数学模型。结果表明：汽化核心密度、气泡脱离直径和纳米流体润湿角是纳米流体换热性能提升的主要原因,所建立的新的汽化核心密度、气泡脱离直径模型预测结果与实验数据吻合非常好，证明该模型的可靠性，给精确预测水基SiO₂纳米流体核态沸腾换热特性提供了重要的参考价值。

英文摘要:

      Combining with the two fluid multiphase flow model and the heat flux partitioning model，a new mathematic model was presented to investigate the nucleate pool boiling of SiO2-water nanofluids. The results show that the nucleation site density，bubble departure diameter and the cotact angle were the main cause of the enhancement of heat transfer performence. The predicted results of the nucleation site density and bubble departure diameter fit the experimental data very well. This model provides an important reference for accurately predict the boiling heat tranfer characteristics of Si-O2-water nanofluid.