| 海水-冰晶两相流非等温流动及传热研究 |
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| 引用本文： | 陈海文,李捷,陈迪林,徐立,黄长绪,陶铖. 海水-冰晶两相流非等温流动及传热研究[J]. 船舶工程, 2020, 42(9): 30-35 |
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| 作者姓名： | 陈海文 李捷 陈迪林 徐立 黄长绪 陶铖 |
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| 作者单位： | 高性能船舶技术教育部重点实验室武汉理工大学 武汉,高性能船舶技术教育部重点实验室武汉理工大学 武汉,高性能船舶技术教育部重点实验室武汉理工大学 武汉,高性能船舶技术教育部重点实验室武汉理工大学 武汉,高性能船舶技术教育部重点实验室武汉理工大学 武汉,高性能船舶技术教育部重点实验室武汉理工大学 武汉 |
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| 基金项目： | 国家自然科学基金（51479152）；船舶动力工程技术交通运输行业重点实验室开放基金（KLMPET2018-01）；中央高校基本科研业务费专项资金（2019Ⅲ046GX）。 |
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| 摘 要： | 船舶在冰区航行时,存在冰晶颗粒混合海水流入船舶冷却系统现象。基于颗粒动力学理论,建立适用于海水-冰晶两相流的欧拉-欧拉双流体模型,耦合相间传热传质模型对海水-冰晶两相流在水平直管内流动及传热特性数值模拟。研究表明,冰晶颗粒流动过程中,在管道上部位置R=8~10mm处冰晶体积分数达到最大值,且随着速度增加而增大；当入口含冰率(IPF)为4%时,冰晶速度的最大值出现在管道中心轴线上方。当入口速度为1.0~3.0 m·s-1，含冰率4%~30%时，局部传热系数随入口速度及含冰率增大而增加。
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| 关 键 词： | 海水-冰晶两相流 颗粒分布 速度分布 传热特性 |
| 收稿时间： | 2019-08-10 |
| 修稿时间： | 2020-10-22 |
Non-isothermal Flow and Heat Transfer of Seawater Ice Crystal Two-phase Flow |
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| CHEN Haiwen,LI Jie,CHEN Dilin,Huang Changxu and Tao Cheng. Non-isothermal Flow and Heat Transfer of Seawater Ice Crystal Two-phase Flow[J]. Ship Engineering, 2020, 42(9): 30-35 |
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| Authors: | CHEN Haiwen LI Jie CHEN Dilin Huang Changxu Tao Cheng |
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| Affiliation: | Key Laboratory of High Performance Marine Technology,Ministry of Education,Wuhan University of Technology,Wuhan,Key Laboratory of High Performance Marine Technology,Ministry of Education,Wuhan University of Technology,Wuhan,Key Laboratory of High Performance Marine Technology,Ministry of Education,Wuhan University of Technology,Wuhan,Key Laboratory of High Performance Marine Technology,Ministry of Education,Wuhan University of Technology,Wuhan,Key Laboratory of High Performance Marine Technology,Ministry of Education,Wuhan University of Technology,Wuhan,Key Laboratory of High Performance Marine Technology,Ministry of Education,Wuhan University of Technology,Wuhan |
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| Abstract: | Based on particle dynamics theory, an Eulerian-Eulerian two-fluid model suitable for seawater-ice crystal two-phase flow is established. The numerical simulation of flow and heat transfer characteristics of seawater-ice crystal two-phase flow in heat exchange tubes is carried out by coupled heat and mass transfer model. The results show that the flow of ice crystal particles, the number of ice crystals reaches the maximum at the upper position of the pipe at R=8~10mm, and increases with the increase of speed; when the inlet IPF is 4%, the maximum value of the ice crystal velocity appears at the central axis of the pipe. When the inlet speed is 1.0 ~ 3.0 m · s-1 and the ice content is 4% ~ 30%, the local heat transfer coefficient increases with the inlet speed and ice content. |
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| Keywords: | seawater ice crystal two-phase flow particle distribution velocity distribution heat transfer characteristics |
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