A heat transfer model development for CHF prediction with consideration of dry patch characteristics

Dong Hoon Kam; Yong Hoon Jeong; Hee Cheon NO

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A heat transfer model development for CHF prediction with consideration of dry patch characteristics

机译：干贴片特性考虑CHF预测的传热模型开发

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摘要

This study develops an observation-based mechanistic heat transfer model that can be extended to the whole boiling curve to reflect real physical phenomena on a heated surface. In addition to hot spot formation, this study focuses on dry patch behaviors, which actually directly trigger CHF occurrences. For that purpose, hot spot distribution and the critical number of hot spots are further considered to determine the kinds of dry patches, whether reversible (quenchable) or irreversible (unquenchable). To assess the prediction performance, CHF data that include combined effects are used for data comparisons. The developed model predicts well for large dimensions at a vertical orientation, suggesting potential applications to large-scale facilities.

机译：该研究开发了一种基于观察的机械传热模型，可以扩展到整个沸腾的曲线，以反映加热表面上的真实物理现象。除了热点形成外，本研究侧重于干燥贴片行为，实际上直接触发CHF的发生。为此目的，热点分布和临界数量的热点被进一步考虑确定干贴片种类，无论是可逆（淬火）还是不可逆的（未静脉）。为了评估预测性能，包括组合效果的CHF数据用于数据比较。开发的模型在垂直方向上预测大尺寸，暗示大规模设施的潜在应用。

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来源
《International Journal of Heat and Mass Transfer》 |2020年第2期|118812.1-118812.11|共11页
作者
Dong Hoon Kam; Yong Hoon Jeong; Hee Cheon NO;
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作者单位

Department of Nuclear and Quantum Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro Yuseong-gu Daejeon 305-701 Republic of Korea;

Department of Nuclear and Quantum Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro Yuseong-gu Daejeon 305-701 Republic of Korea;

Department of Nuclear and Quantum Engineering Korea Advanced Institute of Science and Technology (KAIST) 291 Daehak-ro Yuseong-gu Daejeon 305-701 Republic of Korea;

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收录信息美国《科学引文索引》(SCI);美国《工程索引》(EI);
原文格式 PDF
正文语种 eng
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A heat transfer model development for CHF prediction with consideration of dry patch characteristics

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