不同位置射流强化螺旋通道传热性能分析

doi:10.16085/j.issn.1000-6613.2022-0583

摘要/Abstract

摘要：

为了进一步提高并更合理评价射流强化螺旋通道内流体换热的综合性能, 改进了射流管的安装位置并提出新的强化传热评价指标。采用实验和数值模拟对比研究了在圆形截面螺旋通道的内侧壁面和外侧壁面分别施加射流的强化传热效果。数值模拟结果与实验测量结果吻合较好。基于相同质量流量，探究了射流入射角度α以及射流与主流质量流量比ε_jm对强化传热特性的影响。考虑射流带来的附加功耗增加，提出以热功系数比（hpc）为评价指标对比分析了综合强化传热效果。结果表明，在α=30°～80°、ε_jm=0.1～1.5的研究范围内，与外侧壁面施加的射流相比，内侧壁面施加的射流对流体扰动更强，传热增强效果更好，同时消耗总功耗更小。当ε_jm=0.5、α=60°时，射流对螺旋通道的综合强化传热效果最佳，内侧、外侧壁面射流下的hpc最高值分别为1.39和1.32。

关键词: 螺旋通道, 射流, 流动, 传热, 模拟, 实验

Abstract:

The purpose of the present paper is to further enhance and reasonably evaluate the comprehensive performance of the heat transfer enhancement technology of applying jet in the helical channel. The installation position of jet pipe was altered and an evaluation index of enhanced heat transfer was put forward. The heat transfer enhancement effect of jet added on the inner and outer walls of the helical channel with circular cross-section was compared experimentally and numerically. The numerical simulation results were in good agreement with the experimental results. Based on the same mass flow, the effects of jet incidence angle (α) and the ratio of jet flow rate to mainstream mass flow rate (ε_jm) on the heat transfer characteristics and flow resistance were investigated. Considering the increase of pump power caused by the jet, the comprehensive heat transfer enhancement effect of jet was compared and analyzed by using the ratio of heat and power coefficient hpc as the evaluation index. The results showed that, compared with the jet added to the outer wall, the jet added to the inner wall had stronger fluid disturbance, better heat transfer enhancement effect and less total power consumption. The studied ranges of α and ε_jm were α=30°—80° and ε_jm=0.1—1.5, respectively. The jet with ε_jm=0.5,α=60° was best in comprehensive heat transfer enhancement. The highest values of hpc was 1.39 and 1.32 for the jet added to the inner and outer wall respectively.

Key words: helical channel, jet, flow, heat transfer, simulation, experiment

中图分类号:

TK124

李雅侠, 韩泽民, 王凯, 张平, 张丽, 张静. 不同位置射流强化螺旋通道传热性能分析[J]. 化工进展, 2023, 42(1): 128-137.

LI Yaxia, HAN Zemin, WANG Kai, ZHANG Ping, ZHANG Li, ZHANG Jing. Analysis of heat transfer enhancing performance in helical channel by jet at different positions[J]. Chemical Industry and Engineering Progress, 2023, 42(1): 128-137.

图/表 14

图1 实验系统流程图1—储水槽；2—主流泵；3—射流泵；4—主流调节阀；5—射流调节阀；6—出口阀；7—主流流量计；8—射流流量计；9—压差计；10—水浴；11—螺旋管；12—射流管；13—热电偶；14—数据采集系统；15—冷却水箱；16—散热器

图2 带有射流管的螺旋通道的物理模型

图3 射流管的布置图

表1 数值模拟中参数及取值范围

参数	取值范围
R_c/mm	150
P/mm	40
d/mm	19.6
d_j/mm	10
l/mm	60
α/（°）	30～80
ε_jm	0.1～1.5

图4 Δp的实验值和数值模拟结果对比曲线

图5 测温点T2、T3和T4的实验与数值模拟结果对比

图6 沿主流方向温度、压强和湍流强度的变化（α=60°）

图7 不同位置横截面内量纲为1切向速度云图和二次流线图（各截面左侧为内侧壁面）

图8 Nulocal沿圆周壁面的分布曲线( α=60°)

图9 εjm对平均对流换热系数Num的影响(α=60°)

图10 α对平均对流换热系数Num的影响(ɛjm=0.5)

图11 ɛjm对总功耗的影响(α=60°)

图12 α以及射流位置对总功耗的影响(ɛjm=0.5)

图13 内侧、外侧壁面射流的hpc值对比

参考文献 22

1	林宗虎，汪军，李瑞阳，等．强化传热技术[M]．北京: 化学工业出版社，2006: 3-6.
	LIN Zhonghu, WANG Jun, LI Ruiyang, et al. Enhanced heat transfer technology[M]. Beijing: Chemical Industry Press, 2006: 3-6.
2	SATYENDER Singh, SHAILENDRA Kumar Chaurasiya, BHARAT Singh Negi. Utilizing circular jet impingement to enhance thermal performance of solar air heater[J]. Renewable Energy, 2020, 3(154): 1327-1345.
3	孙斌, 曲艺, 杨迪. 纳米流体冲击射流换热特性实验[J]. 化工进展, 2016, 35(8): 99-103.
	SUN Bin, QU Yi, YANG Di. Experiment on heat transfer characteristics of nanofluid impinging jet[J]. Chemical Industry and Engineering Progress, 2016, 35(8): 99-103.
4	平浚. 射流理论基础及应用[M]. 北京: 中国宇航出版社, 1995.
	PING Jun. Theoretical basis and application of jet[M]. Beijing: Aerospace Press, 1995.
5	ANGELES Los. On the formation of the counter-rotating vortex pair in transverse jets[J]. Journal of Fluid Mechanics, 2001, 44(6): 347-373.
6	周冬, 任建勋. 射流纵向涡强化换热的数值模拟[J]. 清华大学学报(自然科学版), 2004, 44(11): 1520-1523.
	ZHOU Dong, REN Jianxun. Numerical simulation of heat transfer enhancement by jet-induced longitudinal vortices[J]. Journal of Tsinghua University (Science & Technology), 2004, 44(11): 1520-1523.
7	WEGNER B, HUAI Y, SADIKI A. Comparative study of turbulent mixing in jet in cross-flow configurations using LES[J]. International Journal of Heat & Fluid Flow, 2004, 25(5): 767-775.
8	LI Guoneng, ZHENG Yongqu, HU Guilin, et al. Convective heat transfer enhancement of a rectangular flat plate by an impinging jet in cross flow[J]. Fluid Dynamics and Transport phenomena, 2014, 22 (5): 489-495.
9	钟华栋, 李国能, 郑友取, 等. 横向射流强化平板传热实验研究[J]. 热力发电, 2016, 45(6): 11-18.
	ZHONH Huadong, LI Guoneng, ZHENG Youqu, et al. Experimental study on forced convection heat transfer from a flat plate by a transverse jet[J]. Thermal Power Generation, 2016, 45(6): 11-18.
10	LUIS S, ALDONSO O. Vortex dynamics and mechanisms of heat transfer enhancement in synthetic jet impingement[J]. International Journal of Thermal Sciences, 2017, 112: 153-164.
11	YADAV H, AGRAWAL A. Effect of vortical structures on velocity and turbulent fields in the near region of an impinging turbulent jet[J]. Physics Fluids, 2018, 30 (3)： 035107.
12	李淇淇, 梁彬烽, 郭泳盈, 等. 基于射流冲击横流原理产生涡旋及其测量[J]. 物理实验, 2020, 40(7): 46-52.
	LI Qiqi, LIANG Binfeng, GUO Yongying, et al. Creating and measuring vortex based on principle of jet impinging transverse flow[J]. Physics Experimentation, 2020, 40(7): 46-52.
13	林清宇, 吴佩霖, 冯振飞, 等. 螺旋通道内流动沸腾传热研究进展[J]. 化工进展, 2020, 39(7): 2521-2533.
	LIN Qingyu, WU Peilin, FENG Zhenfei, et al. Research progress of boiling heat transfer in helical channels[J]. Chemical Industry and Engineering Progress, 2020, 39(7): 2521-2533.
14	李雅侠, 王霞, 张静, 等. 射流式涡发生器强化矩形螺旋通道内流体换热机理[J]. 化工学报, 2019, 70(8): 2961-2970.
	LI Yaxia, WANG Xia, ZHANG Jing, et al. Fluid-flow vortex generator enhances fluid heat transfer mechanism in rectangular spiral channel[J]. CIESC Journal, 2019, 70(8): 2961-2970.
15	李雅侠, 许鹏宇, 韩泽民, 等. 矩形截面高宽比对射流强化螺旋通道传热性能的影响[J]. 过程工程学报, 2022， 22（5）: 612-621.
	LI Yaxia, XU Pengyu, HAN Zemin, et al. Influence of aspect ratio on heat transfer enhancement performance by jet in helical duct with rectangular cross section[J]. The Chinese Journal of Process Engineer，2022， 22（5）: 612-621.
16	李雅侠, 张元, 张静, 等. 射流强化螺旋通道内流体流动与换热的数值模拟[J]. 过程工程学报, 2020, 20(8): 896-903.
	LI Yaxia, ZHANG Yuan, ZHANG Jin, et al. Numerical simulation of fluid flow and heat transfer in jet enhanced spiral channel[J]. Chinese Journal of Process Engineering, 2020, 20(8): 896-903.
17	陶文铨. 数值传热学[M]. 2 版. 西安: 西安交通大学出版社, 2001: 332-430.
	TAO Wenquan. Numerical heat transfer[M]. 2nd ed. Xi’an: Xi’an Jiaotong University Press, 2001: 332-430.
18	谢永慧, 樊涛, 张荻, 等. 矩形扩压通道内流动控制的实验与数值研究[J]. 中国电机工程学报, 2010, 30(5): 92-99.
	XIE Yonghui, FAN Tao, ZHANG Di, et al. Experimental and numerical study on flow separation control in rectangle diffuser[J]. Chinese Society for Electrical Engineering, 2010, 30(5): 92-99.
19	李国能, 林江, 李凯, 等. 横向射流中心轨迹和扩展宽度[J]. 化工学报, 2011, 62(1): 66-70.
	LI Guoneng, LIN Jiang, LI Kai, et al. Central trajectory and spread width intransverse jet [J]. CIESC Journal, 2011, 62(1): 66-70.
20	蔡香丽, 李培, 杨智勇, 等. 圆管内轴向旋转流切向速度湍流强度[J]. 化工学报, 2014, 65(11): 4278-4284.
	CAI Xiangli, LI Pei, YANH Zhiyong, et al. Turbulence intensity of real tangential velocity in circular pipe[J]. CIESC Journal, 2014, 65(11): 4278-4284.
21	WANG Minglu, ZHENG Mingguang, WANG Rui, et al. Experimental studies on local and average heat transfer characteristic in helical pipes with single phase flow[J]. Annals of Nuclear Energy, 2019, 123(1): 78-85.
22	YANG Yuetu, WANG Yongxun. Three-dimensional numerical simulation of an inclined jet with cross-flow[J]. International Journal of Heat and Mass Transfer, 2005,48(19/20): 4019-4027.

[1]	肖辉, 张显均, 兰治科, 王苏豪, 王盛. 液态金属绕流管束流动传热进展[J]. 化工进展, 2023, 42(S1): 10-20.
[2]	李梦圆, 郭凡, 李群生. 聚乙烯醇生产中回收工段第三、第四精馏塔的模拟与优化[J]. 化工进展, 2023, 42(S1): 113-123.
[3]	张瑞杰, 刘志林, 王俊文, 张玮, 韩德求, 李婷, 邹雄. 水冷式复叠制冷系统的在线动态模拟与优化[J]. 化工进展, 2023, 42(S1): 124-132.
[4]	王太, 苏硕, 李晟瑞, 马小龙, 刘春涛. 交流电场中贴壁气泡的动力学行为[J]. 化工进展, 2023, 42(S1): 133-141.
[5]	赵晨, 苗天泽, 张朝阳, 洪芳军, 汪大海. 负压状态窄缝通道乙二醇水溶液传热特性[J]. 化工进展, 2023, 42(S1): 148-157.
[6]	孙继鹏, 韩靖, 唐杨超, 闫汉博, 张杰瑶, 肖苹, 吴峰. 硫黄湿法成型过程数值模拟与操作参数优化[J]. 化工进展, 2023, 42(S1): 189-196.
[7]	陈匡胤, 李蕊兰, 童杨, 沈建华. 质子交换膜燃料电池气体扩散层结构与设计研究进展[J]. 化工进展, 2023, 42(S1): 246-259.
[8]	崔守成, 徐洪波, 彭楠. 两种MOFs材料用于O₂/He吸附分离的模拟分析[J]. 化工进展, 2023, 42(S1): 382-390.
[9]	徐若思, 谭蔚. C形管池沸腾两相流流场模拟与流固耦合分析[J]. 化工进展, 2023, 42(S1): 47-55.
[10]	张凤岐, 崔成东, 鲍学伟, 朱炜玄, 董宏光. 胺液吸收-分步解吸脱硫工艺的设计与评价[J]. 化工进展, 2023, 42(S1): 518-528.
[11]	郭强, 赵文凯, 肖永厚. 增强流体扰动强化变压吸附甲硫醚/氮气分离的数值模拟[J]. 化工进展, 2023, 42(S1): 64-72.
[12]	邵博识, 谭宏博. 锯齿波纹板对挥发性有机物低温脱除过程强化模拟分析[J]. 化工进展, 2023, 42(S1): 84-93.
[13]	许友好, 王维, 鲁波娜, 徐惠, 何鸣元. 中国炼油创新技术MIP的开发策略及启示[J]. 化工进展, 2023, 42(9): 4465-4470.
[14]	陈林, 徐培渊, 张晓慧, 陈杰, 徐振军, 陈嘉祥, 密晓光, 冯永昌, 梅德清. 液化天然气绕管式换热器壳侧混合工质流动及传热特性[J]. 化工进展, 2023, 42(9): 4496-4503.
[15]	刘炫麟, 王驿凯, 戴苏洲, 殷勇高. 热泵中氨基甲酸铵分解反应特性及反应器结构优化[J]. 化工进展, 2023, 42(9): 4522-4530.