极地海洋工程装备圆管结构的对流换热影响

doi:10.16183/j.cnki.jsjtu.2021.205

上海交通大学学报 ›› 2023, Vol. 57 ›› Issue (1): 17-23.doi: 10.16183/j.cnki.jsjtu.2021.205

所属专题：《上海交通大学学报》2023年“船舶海洋与建筑工程”专题

极地海洋工程装备圆管结构的对流换热影响

操太春¹^,², 吴刚³, 孔祥逸¹, 于东玮¹^,², 吴琳¹, 张大勇¹()

1.大连理工大学海洋科学与技术学院, 辽宁盘锦 124221
2.大连理工大学运载工程与力学学部, 辽宁大连 116023
3.中国船舶及海洋工程设计研究院, 上海 200021

收稿日期:2021-06-11 修回日期:2021-09-02 出版日期:2023-01-28 发布日期:2023-01-13
通讯作者: 张大勇 E-mail:zhangdy@dlut.edu.cn.
作者简介:操太春(1995-),硕士生,从事海洋工程装备防寒设计研究.
基金资助:
工信部高技术船舶科研项目(CBG2N21-2-2);国家自然科学基金(52071055);辽宁省教育厅高等学校创新团队及创新人才支持计划(LT2019004)

Influence of Convection Heat Transfer on Circular Tube Structure of Polar Marine Engineering Equipment

CAO Taichun¹^,², WU Gang³, KONG Xiangyi¹, YU Dongwei¹^,², WU Lin¹, ZHANG Dayong¹()

1. College of Marine Science and Technology, Dalian University of Technology, Panjin 124221, Liaoning, China
2. Faculty of Vehicle Engineering and Mechanics, Dalian University of Technology, Dalian 116023, Liaoning, China
3. Marine Design and Research Institute of China, Shanghai 200021, China

Received:2021-06-11 Revised:2021-09-02 Online:2023-01-28 Published:2023-01-13
Contact: ZHANG Dayong E-mail:zhangdy@dlut.edu.cn.

摘要/Abstract

摘要：

电伴热是极地海洋工程装备防寒主要措施,而热平衡是对流换热的关键问题.以圆管构件为研究对象,采用有限元数值仿真软件Fluent数值仿真与模型实验相结合的方法,分析了圆管构件在风速为0~40 m/s、温度为-40~0 ℃的极地环境条件下对流换热系数变化情况;基于数值仿真数据建立了电加热圆管构件对流换热系数的预测模型.结果表明:增大风速和降低温度都会增加圆管构件的对流换热系数;温度低于-30 ℃ 或风速大于25 m/s且温度低于-20 ℃ 时,温度对圆管的对流换热系数影响增大;实测数据验证了该模型的合理性.

关键词: 极地, 圆管构件, 对流换热, 数值模拟, 实验测试

Abstract:

Electric heat tracing is often used for cold protection in polar ocean engineering equipment. Heat balance is the key problem of convective heat transfer. In this paper, the circular tube structure is taken as the research object. Numerical simulations using Fluent and model experiment are conducted to analyze the change of the convective heat transfer coefficient of the circular tube component under the polar environment with a wind speed range of 0—40 m/s and a temperature range of -40—0 ℃. Based on the numerical simulation data, the prediction model of the convective heat transfer coefficient of the electric heating tube is obtained. The results show that the convective heat transfer coefficient increases with the increase of wind speed and the decrease of temperature. When the temperature is below -30 ℃, or when the wind speed is greater than 25 m/s and the temperature is lower than -20 ℃, the influence of temperature on the convective heat transfer coefficient increases. The rationality of the model is verified by experimental test.

Key words: polar region, circular tube component, convective heat transfer, numerical simulation, experimental test

中图分类号:

TK11
U662

操太春, 吴刚, 孔祥逸, 于东玮, 吴琳, 张大勇. 极地海洋工程装备圆管结构的对流换热影响[J]. 上海交通大学学报, 2023, 57(1): 17-23.

CAO Taichun, WU Gang, KONG Xiangyi, YU Dongwei, WU Lin, ZHANG Dayong. Influence of Convection Heat Transfer on Circular Tube Structure of Polar Marine Engineering Equipment[J]. Journal of Shanghai Jiao Tong University, 2023, 57(1): 17-23.

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实验测量装置	测量范围	精度
温度采集仪1台	-99~999 ℃
K型温度热电偶7个测管温,2个测风温	-50~220 ℃	1%
NK1000高精度风速仪1台	0.6~60 m/s	3%

T/℃	v/ (m·s^-1)	T对h增幅影响/%	v对h增幅影响/%
(-20,0]	<25	1.7	21.2
	>25	2.2	7.8
(-30,-20]	<25	1.9	22.4
	>25	1.7	13.5
[-40,-30]	<25	43.2	23.6
	>25	31.7	9.4

T/℃	Pr	λ/(W·m^-1·K^-1)
(-30,0]	[0.707,0.723)	[0.022 0, 0.023 6]
[-40,-30]	[0.723,0.728]	[0.021 2,0.022 0)

试验编号	T/℃	v/(m·s^-1)	h_mea/(W·m^-2·K^-1))
1	-5.0	4.9	60.2
2	-5.1	8.8	78.3
3	-4.7	13.7	101.2
4	-10.0	5.0	60.4
5	-10.0	8.6	77.6
6	-10.0	13.1	98.7
7	-15.0	5.1	61.2
8	-14.8	9.3	79.1
9	-14.8	13.3	99.8
10	-20.0	5.1	61.7
11	-19.9	9.3	78.7
12	-19.4	13.1	97.4
13	-25.0	4.9	59.8
14	-25.1	8.7	78.3
15	-24.3	12.5	98.5
16	-30.0	4.8	60.1
17	-29.9	8.4	76.9
18	-29.3	12.1	97.8
19	-34.9	4.9	94.5
20	-35.0	8.3	117.7
21	-34.3	11.2	129.7
22	-39.6	4.1	87.4
23	-39.7	7.6	112.3
24	-40.3	11.2	127.5

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极地海洋工程装备圆管结构的对流换热影响

Influence of Convection Heat Transfer on Circular Tube Structure of Polar Marine Engineering Equipment

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