Abstract Steam submerged jet condensation has been widely used in nuclear fission and fusion industries, chemical engineering and aerospace industry. Steam cavity and its feature in stable condensation regime play important roles since they are closely related to heat transfer and condensation oscillation. Due to the different definitions of steam cavity, the properties of steam cavity, such as shapes, void fraction distribution and two-phase mixing regions, are different. The mechanism of steam cavity forming and development remains unclear. The existing analytical models and empirical correlations for steam jet length are verified with experimental data. Most correlations based on Kerney's model can predict the experimental jet lengths when water is stagnant and steam mass flux lower than 800 kg m−2·s−1. For other conditions, significant discrepancy is found among existing experimental jet lengths, and no model can predict them well. The heat transfer coefficient calculation models based on steam jet length correlations fail to predict the experimental data, and no unified correlations or models can predict heat transfer coefficient well. The causes of prediction deviation for jet length and heat transfer coefficient are analyzed. The inconsistent tendency and nonunified saturated temperature cause the significant predicted deviation. Further efforts on analytical and experimental studies on steam jet length and heat transfer coefficient are encouraged in the future.

中文翻译：

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综述：SC 状态下蒸汽浸没射流冷凝的蒸汽腔特征

摘要 蒸汽浸没射流冷凝已广泛应用于核裂变和聚变工业、化学工程和航空航天工业。蒸汽腔及其稳定冷凝状态的特征与传热和冷凝振荡密切相关，因此起着重要作用。由于蒸汽腔的定义不同，蒸汽腔的形状、空隙率分布和两相混合区域等性质也不同。蒸汽腔形成和发展的机制尚不清楚。现有的分析模型和蒸汽喷射长度的经验相关性通过实验数据进行了验证。大多数基于 Kerney 模型的相关性可以预测当水停滞且蒸汽质量通量低于 800 kg m-2·s-1 时的实验射流长度。对于其他条件，现有的实验射流长度之间存在显着差异，并且没有模型可以很好地预测它们。基于蒸汽射流长度相关性的传热系数计算模型无法预测实验数据，没有统一的相关性或模型可以很好地预测传热系数。分析了射流长度和传热系数预测偏差的原因。不一致的趋势和不统一的饱和温度导致显着的预测偏差。鼓励未来进一步努力对蒸汽射流长度和传热系数进行分析和实验研究。基于蒸汽射流长度相关性的传热系数计算模型无法预测实验数据，没有统一的相关性或模型可以很好地预测传热系数。分析了射流长度和传热系数预测偏差的原因。不一致的趋势和不统一的饱和温度导致显着的预测偏差。鼓励未来进一步努力对蒸汽射流长度和传热系数进行分析和实验研究。基于蒸汽射流长度相关性的传热系数计算模型无法预测实验数据，没有统一的相关性或模型可以很好地预测传热系数。分析了射流长度和传热系数预测偏差的原因。不一致的趋势和不统一的饱和温度导致显着的预测偏差。鼓励未来进一步努力对蒸汽射流长度和传热系数进行分析和实验研究。