纵向涡强化汽-液两相传热特性研究

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基金项目:

国家自然科学基金资助(50576089)

空泡物理和自然循环国家级重点实验室基金资助(9140C7101030602)

Study on Two-Phase Heat Transfer Enhancement by Longitudinal Vortex

1. CNNC Key Laboratory on Nuclear Reactor Thermal Hydraulics Technology, Nuclear Power instittute of China, Chengdu, 610041, China;
2. State Key Laboratory of Multiphase Flow in Power Engineering, Xi'an Jiaotong University, Xi'an, 710049, China

摘要: 开展窄间隙矩形通道内纵向涡强化汽-液两相沸腾传热实验。带纵向涡发生器通道和光滑通道实验数据表明:两相沸腾传热系数主要受质量流速影响,而含汽率和入口压力对其影响较小;随着纵向涡发生器的加入,窄间隙矩形通道内沸腾换热机理有较大变化;纵向涡使汽-液两相沸腾传热系数提高1.1%～25.8%。
- 工程热物理 /
- 两相流 /
- 强化传热 /
- 纵向涡 /
- 窄间隙矩形通道
Abstract: Experiment of two-phase heat transfer enhancement has been conducted in narrow rectangular channel with longitudinal vortex generators.The results show that coefficient of boiling heat transfer is more effected by mass flow flux than quality and inlet pressure.The mechanism of boiling heat transfer is changed by longitudinal vortex generators in narrow rectangular channel.Within vapor-liquid two-phase condition,the boiling heat transfer coefficient is increased by 1.1%-25.8% in narrow rectangular channel with longitudinal vortex generators.
- Engineering themophysics /
- Two-phase flow /
- Heat transfer enhancement /
- Longitudinal vortex /
- Narrow rrectangular channel