海洋摇摆条件下超临界二氧化碳传热特性的数值研究

doi:10.7523/j.issn.2095-6134.2018.02.020

中国科学院大学学报 ›› 2018, Vol. 35 ›› Issue (2): 280-288.DOI: 10.7523/j.issn.2095-6134.2018.02.020

• 中国工程热物理学会2016年传热年会专栏 • 上一篇

海洋摇摆条件下超临界二氧化碳传热特性的数值研究

赵振兴, 林原胜, 张克龙, 刘洲洋

武汉第二船舶设计研究所热能动力技术重点实验室, 武汉 430064

收稿日期:2017-04-17 修回日期:2017-07-03 发布日期:2018-03-15
通讯作者: 林原胜
基金资助:
湖北省自然科学基金（2016CFA019）资助

Numerical investigation on heat transfer of supercritical CO₂ in rolling motion

ZHAO Zhenxing, LIN Yuansheng, ZHANG Kelong, LIU Zhouyang

Key Laboratory on Steam Power System, Wuhan 2nd Ship Design and Research Institute, Wuhan 430064, China

Received:2017-04-17 Revised:2017-07-03 Published:2018-03-15

摘要/Abstract

摘要： 对海洋摇摆条件和静止条件下超临界流体传热特性进行数值研究。结果表明，摇摆条件对拟临界区流体传热特性的影响远大于对单相流体和远离拟临界区的超临界流体的影响。摇摆条件导致壁面传热系数的周期性振荡，且有助于抑制传热恶化现象。当超临界流体温度远离拟临界温度后，摇摆条件对超临界流体的传热过程的影响显著减小。随着摇摆周期减小或者摇摆振幅增大，传热恶化现象逐渐减弱。

关键词: 摇摆条件, 数值模拟, 传热特性, 超临界流体

Abstract: The numerical calculations with and without rolling motion are carried out to investigate the effects of rolling motion on flow and heat transfer of supercritical CO₂. It is concluded that the effect of rolling motion on the supercritical CO₂ is much stronger than that on conventional single-phase fluid. The rolling motion causes the periodic oscillation of the local heat transfer coefficient and suppresses the whole heat transfer deterioration. As the supercritical CO₂ temperature increases, the influence of rolling motion on the heat transfer decreases markedly. The heat transfer deterioration phenomenon gradually weakens as the rolling period decreases or rolling amplitude increases.

Key words: rolling motion, numerical simulation, flow distribution, supercritical fluid

中图分类号:

TL331

赵振兴, 林原胜, 张克龙, 刘洲洋. 海洋摇摆条件下超临界二氧化碳传热特性的数值研究[J]. 中国科学院大学学报, 2018, 35(2): 280-288.

ZHAO Zhenxing, LIN Yuansheng, ZHANG Kelong, LIU Zhouyang. Numerical investigation on heat transfer of supercritical CO₂ in rolling motion[J]. , 2018, 35(2): 280-288.

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海洋摇摆条件下超临界二氧化碳传热特性的数值研究

Numerical investigation on heat transfer of supercritical CO₂ in rolling motion

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海洋摇摆条件下超临界二氧化碳传热特性的数值研究

Numerical investigation on heat transfer of supercritical CO2 in rolling motion

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Numerical investigation on heat transfer of supercritical CO₂ in rolling motion