建立了一种新的污染层内膜沸腾开始模型

IF 1.9 3区工程技术 Q1 NUCLEAR SCIENCE & TECHNOLOGY

Annals of Nuclear Energy Pub Date : 2025-04-25 DOI:10.1016/j.anucene.2025.111488

Xiaowen Wang , Maolong Liu , Rui Zhang , Tenglong Cong , Yao Xiao , Hanyang Gu

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引用次数: 0

摘要

为了应对快速增长的能源需求，相变现象被广泛应用于高热流密度的应用中。在大多数这些应用中都观察到结垢对沸腾的影响，结垢在沸腾传热中起不利作用。由于污垢的复杂微观结构，污垢层内沸腾状态的分类仍然不清楚。基于污染层内压力平衡、流动和能量守恒的原理，建立了膜沸腾发生的新模型。新模型的最大误差为25%。敏感性分析表明，污垢孔径对膜沸腾的发生影响最大。当最大孔半径从0.125 μm增加到0.375 μm时，膜沸腾起始热流密度也从0.48 MW/m2增加到1.16 MW/m2。

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Development of a new onset of film boiling model within the fouling layer

To address the rapid increase in energy demand, phase-change phenomena are widely utilized in high heat flux applications. The impact of fouling on the boiling is observed in most of these applications, and fouling plays an adverse role in boiling heat transfer. Due to the complex microstructure of fouling, the classification of the boiling regime within the fouling layer remains unclear. Based on the principles of pressure equilibrium, flow and energy conservation within the fouling layer, this study establishes a new model for the onset of film boiling. The maximum error of the new model is 25 %. The sensitivity analysis reveals that fouling pore size has the greatest effect on the onset of film boiling. When the maximum pore radius increases from 0.125 to 0.375 μm, the film boiling onset heat flux also increases from 0.48 to 1.16 MW/m².

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来源期刊

Annals of Nuclear Energy 工程技术-核科学技术

CiteScore

4.30

自引率

21.10%

发文量

632

审稿时长

7.3 months

期刊介绍： Annals of Nuclear Energy provides an international medium for the communication of original research, ideas and developments in all areas of the field of nuclear energy science and technology. Its scope embraces nuclear fuel reserves, fuel cycles and cost, materials, processing, system and component technology (fission only), design and optimization, direct conversion of nuclear energy sources, environmental control, reactor physics, heat transfer and fluid dynamics, structural analysis, fuel management, future developments, nuclear fuel and safety, nuclear aerosol, neutron physics, computer technology (both software and hardware), risk assessment, radioactive waste disposal and reactor thermal hydraulics. Papers submitted to Annals need to demonstrate a clear link to nuclear power generation/nuclear engineering. Papers which deal with pure nuclear physics, pure health physics, imaging, or attenuation and shielding properties of concretes and various geological materials are not within the scope of the journal. Also, papers that deal with policy or economics are not within the scope of the journal.