T型微细通道内含不凝气蒸汽直接接触凝结数值模拟研究

doi:10.16046/j.cnki.issn2096-5680.2024.03.009

河北水利电力学院学报 ›› 2024, Vol. 34 ›› Issue (3): 50-60.DOI: 10.16046/j.cnki.issn2096-5680.2024.03.009

T型微细通道内含不凝气蒸汽直接接触凝结数值模拟研究

周鹏程¹, 李树谦^2,3,4, 樊凯伦¹, 张存兰²

1.河北建筑工程学院能源工程系,河北省张家口市桥东区朝阳西大街13号 075000;
2.河北水利电力学院土木工程系,河北省沧州市黄河西路49号 061001;
3.河北省数据中心相变热管理技术创新中心,河北省沧州市黄河西路49号 061001;
4.沧州市储热及低品位余热利用型电磁供热技术创新中心,河北省沧州市黄河西路49号 061001

收稿日期:2024-05-31 修回日期:2024-06-21 出版日期:2024-09-30 发布日期:2024-10-09
通讯作者: 李树谦(1982-),男,河北石家庄人,博士,副教授,硕士研究生导师,主要研究方向为相变流动与传热。E-mail:lsqtcc@163.com
作者简介:周鹏程(1999-),男,江苏泰州人,在读硕士研究生,主要研究方向为相变流动与传热。E-mail:1466501672@qq.com
基金资助:
国家自然科学基金项目(51976052);河北省自然科学基金项目(E2020412176)

Numerical Simulation on Direct Contact Condensation of Non-condensable Vaporin in T-type Microchannel

ZHOU Pengcheng¹, LI Shuqian^2,3,4, FAN Kailun¹, ZHANG Cunlan²

1. Department of Energy Engineering, Hebei University of Architecture, 075000, Zhangjiakou, Hebei, China;
2. Department of Civil Engineering, Hebei University of Water Resources and Electric Engineering, 061001, Cangzhou, Hebei, China;
3. Hebei Data Center Phase Change Thermal Management Technology Innovation Center, 061001, Cangzhou, Hebei, China;
4. Cangzhou Heat Storage and Low-Grade Waste Heat Utilization Electromagnetic Heating Technology Innovation Center, 061001, Cangzhou, Hebei, China

Received:2024-05-31 Revised:2024-06-21 Online:2024-09-30 Published:2024-10-09

摘要/Abstract

摘要： 利用VOF多相流模型和大涡模拟LES湍流模型,结合“双阻力”模型和Fick定律,对微细通道内含不凝气蒸汽的直接接触凝结过程进行了数值模拟。开展了不凝气对蒸汽直接接触凝结过程中气羽形态、压力分布以及凝结速率的影响机制研究。结果表明:在少量不凝气存在的工况,汽液相界面仍呈现周期性变化,随不凝气含量增加,其在汽液界面处聚集形成的不凝气层厚度增加,气羽无周期性变化。此外,随着不凝气含量的升高,压力振荡强度减弱,凝结形成的负压值变小,凝结速率降低。

关键词: 微细通道, 直接接触凝结, 不凝气, 数值模拟

Abstract: Using the VOF multiphase flow model, the LES turbulence model is combined with the “double drag” model and Fick's law. The mechanism of non-condensate gas on the morphology, pressure distribution and condensation rate of direct contact with steam was studied. The results show that in the condition of a small amount of non-condensate gas, the gas-liquid phase interface still shows periodic change, with the increase of non-condensate gas content, the thickness of the non-condensing gas layer formed at the air-liquid interface increases, and the gas feather has no periodic change. In addition, with the increase of the noncondensing gas content, the pressure oscillation strength decreases, the negative pressure value formed by condensation becomes smaller, and the condensation rate decreases.

Key words: micro-channels;direct contact condensation;non-condensable vapor, numerical simulation

中图分类号:

周鹏程, 李树谦, 樊凯伦, 张存兰. T型微细通道内含不凝气蒸汽直接接触凝结数值模拟研究[J]. 河北水利电力学院学报, 2024, 34(3): 50-60.

ZHOU Pengcheng, LI Shuqian, FAN Kailun, ZHANG Cunlan. Numerical Simulation on Direct Contact Condensation of Non-condensable Vaporin in T-type Microchannel[J]. Journal of Hebei University of Water Resources and Electric Engineering, 2024, 34(3): 50-60.

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T型微细通道内含不凝气蒸汽直接接触凝结数值模拟研究

Numerical Simulation on Direct Contact Condensation of Non-condensable Vaporin in T-type Microchannel

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