外凸式波节套管换热器壳程流动与传热机理的数值模拟

doi:10.3969/j.issn.0438-1157.2014.z1.014

化工学报 ›› 2014, Vol. 65 ›› Issue (S1): 85-94.DOI: 10.3969/j.issn.0438-1157.2014.z1.014

外凸式波节套管换热器壳程流动与传热机理的数值模拟

韩怀志, 李炳熙, 何玉荣, 邵伟

哈尔滨工业大学能源科学与工程学院, 黑龙江哈尔滨 150001

收稿日期:2014-01-21 修回日期:2014-01-27 出版日期:2014-05-30 发布日期:2014-05-30
通讯作者: 李炳熙
基金资助:
国际科技合作与交流项目（2009DFR60120）。

Numerical simulation on flow and heat transfer characteristics in shell side of outward convex corrugated double-pipe heat exchangers

HAN Huaizhi, LI Bingxi, HE Yurong, SHAO Wei

School of Energy Science and Engineering, Harbin Institute of Technology, Harbin 150001, Heilongjiang, China

Received:2014-01-21 Revised:2014-01-27 Online:2014-05-30 Published:2014-05-30
Supported by:
supported by International Science and Technology Cooperation and Exchanges (2009DFR60120).

摘要/Abstract

摘要： 针对波节套管换热器壳程中的流动和传热机理进行了k-ε的数值模拟研究。采用六面体网格结合波节区域加密的特殊划分方法，进行了首层网格间距和主流区网格间距的无关性分析。数值模拟结果与经验公式进行对比，验证了数值模拟方法的准确性。对比分析了波节管和光管中流动和传热参数（速度、温度、湍动能和湍流耗散率）的性能差异，揭示了波节管的强化换热机理。同时，分析了波节管的局部Nusselt数和阻力降沿壁面的变化规律。结果表明流体在波节的去流侧形成了一个脱体旋涡，破坏了流体的速度边界层和温度边界层，同时使得其内部的摩擦阻力和热扩散能力明显提高，起到了明显的强化换热效应。

关键词: 波节套管换热器, k-ε模型, Nusselt数, 阻力降, 强化换热

Abstract: The flow and heat transfer mechanism in the shell side of corrugated double-pipe heat exchanger are studied numerically based on the k-ε model. The independent analysis of first layer thickness and main flow region grid are carried out using hexahedral mesh in the whole region combined with dense mesh in the corrugation region. Compared the data from empirical formula with computational results, the accuracy of numerical methods is verified. The strengthening heat transfer mechanism is revealed by analyzing the difference of the flow and heat transfer parameters distribution (speed, temperature and turbulent kinetic energy and turbulence dissipation rate) between corrugated tube and smooth tube. Meanwhile, the local Nusselt numbers and pressure drop distributed law along the corrugation wall is also analyzed. The results indicate that the detached vortex formed at the downstream side of corrugation which resulting in an obvious effect of heat transfer augmentation destroys the velocity and temperature boundary layer meanwhile increase the frictional resistance and thermal diffusivity.

Key words: outward convex corrugated double-pipe heat exchangers, k-ε model, Nusselt number, pressure drop, heat transfer enhancement

中图分类号:

TK172

韩怀志, 李炳熙, 何玉荣, 邵伟. 外凸式波节套管换热器壳程流动与传热机理的数值模拟[J]. 化工学报, 2014, 65(S1): 85-94.

HAN Huaizhi, LI Bingxi, HE Yurong, SHAO Wei. Numerical simulation on flow and heat transfer characteristics in shell side of outward convex corrugated double-pipe heat exchangers[J]. CIESC Journal, 2014, 65(S1): 85-94.

参考文献 20

[1]	Zhang Li, Du Wenjian, Wu Jianhua, Li Yaxia, Xing Yanwei. Fluid flow characteristics for shell side of double-pipe heat exchanger with helical fins and pin fins[J]. Experimental Thermal and Fluid Science, 2012, 36: 30-43
[2]	Zhang Li(张丽), Tian Mimi(田密密), Wu Jianhua(吴剑华). Heat transfer performance of the shell side of double-pipe heat exchanger enhanced with helical fins[J]. Journal of Chemical Engineering of Chinese Universities(高校化学工程学报), 2011, 25(1): 24-29
[3]	Sun Cunzheng(孙存政). Study and development of corrugated tube[D]. Beijing: Beijing University of Chemical Technology, 2009
[4]	Vicente P G,Garcia A.Experimental investigation on heat transfer and frictional characteristics of spirally corrugated tubes in turbulent flow at different Prandtl number[J].Heat and Mass Transfer,2004,47:671-681
[5]	Garcia A, Solano J P, Vicente P G, Viedma A. The influence of artificial roughness shape on heat transfer enhancement: corrugated tubes, dimpled tubes and wire coils[J]. Appl. Thermal Eng., 2012, 35: 196-201
[6]	Han Huaizhi, Li Bingxi, Yu Biyong, He Yurong, Li Fengchen. Numerical study of flow and heat transfer characteristics in outward convex corrugated tubes [J]. International Journal of Heat and Mass Transfer, 2012, 55(25/26): 7782-7802
[7]	Wu S L. Effects of semifinished thickness with irregular can hydraulic expansion bulging forming process//Proceedings of the 6th International Conference on Physical and Numerical Simulation of Materials Processing[C], 2010
[8]	Pethkool S, Eiamsa-ard S. Turbulent heat transfer enhancement in a heat exchanger using helically corrugated tube[J]. Int. Commun. Heat Mass Transfer, 2011, 38: 340-347
[9]	Barba A, Rainieri S, Spiga M. Heat transfer enhancement in a corrugated tube[J]. Int. Commun. Heat Mass Transfer, 2012, 3: 313-322
[10]	Fabbri G, Rossi R. Analysis of the heat transfer in the entrance region of optimized corrugated wall channel[J]. Int. Commun. Heat Mass Transfer, 2005, 32: 902-912
[11]	Han Huaizhi(韩怀志), Li Bingxi(李炳熙), He Yurong(何玉荣), Xu Zhi(许智). Numerical simulation research of helium flow and heat transfer characteristic in corrugated tube[J]. Journal of Engineering Thermophysics(工程热物理学报), 2012, 33(12): 2159-2162
[12]	Han Huaizhi(韩怀志), Li Bingxi(李炳熙), He Yurong(何玉荣), Bie Rushan(别如山). Heat transfer and flow characteristics in asymmetrical outward convex corrugated tubes[J]. CIESC Journal(化工学报), 2013, 64(6): 1916-1924
[13]	Vicente P G, Garcia A, Viedma A. Experimental investigation on heat transfer and frictional characteristics of spirally corrugated tubes in turbulent flow at different Prandtl numbers[J]. Int. J. Heat Mass Transfer, 2004,47: 671-681
[14]	Zachár A. Analysis of coiled-tube heat exchangers to improve heat transfer rate with spirally corrugated wall[J]. Int. J. Heat Mass Transfer, 2010, 53: 3928-3939
[15]	Ghorbani N, Taherian H, Gorji M, Mirgolbabaei H. Experimental study of mixed convection heat transfer in vertical helically coiled tube heat exchangers[J]. Exp. Thermal Fluid Sci., 2010, 34: 900-905
[16]	Xu Jianmin(徐建民), Wang Xiaoqing(王晓清). Numerical simulation of fluid flow and transfer in corrugated tubes[J]. Petro-Chemical Equipment(石油化工设备), 2008, 37(1): 4-7
[17]	Zeng Min(曾敏), Shi Lei(石磊), Tao Wenquan(陶文铨). Experimental and numerical study of laminar flow and heat transfer characteristic in corrugated tubes[J]. Journal of Engineering Thermophysics(工程热物理学报), 2006, 27(1): 142-144
[18]	Wu Feng(吴峰). Numerical study on convective heat transfer and pressure drop of corrugated tube[J]. Petro-Chemical Equipment(石油化工设备), 2009, 38(1): 22-25
[19]	Wu Feng(吴峰), Zeng Min(曾敏). Numerical calculation on flow and heat transfer rule in corrugated tube[J]. Journal of Power Engineering(动力工程), 2009, 29(2): 169-173
[20]	Han Huaizhi, Li Bingxi, He Yurong. Calculation and analysis of helium flow and heat transfer characteristic in corrugated tube [J]. Journal of North China Electric Power University, 2012, 39(1): 59-63

外凸式波节套管换热器壳程流动与传热机理的数值模拟

Numerical simulation on flow and heat transfer characteristics in shell side of outward convex corrugated double-pipe heat exchangers

PDF (PC)

可视化

被引次数

摘要/Abstract

引用本文

使用本文

参考文献 20

相关文章 15

编辑推荐

Metrics

本文评价

[1]	陆威, 苗冉, 吴志根, 吴长春, 谢伟. 非牛顿流体在波节套管换热器中流动与换热的实验研究[J]. 化工学报, 2022, 73(7): 2924-2932.
[2]	李晗, 蒲文灏, 杨宁, 毛衍钦, 岳晨, 张琦. 空气-石蜡直接接触换热特性实验研究[J]. 化工学报, 2018, 69(9): 3792-3798.
[3]	王茜, 韩怀志, 李炳熙. 板式换热器波纹通道的流动与传热机理[J]. 化工学报, 2017, 68(S1): 71-82.
[4]	韩怀志, 宋福元, 张国磊, 杨龙滨, 李彦军. 外凸式波节管结合内插扭带复合强化换热性能分析[J]. 化工学报, 2016, 67(S1): 195-202.
[5]	邱德来, 管宁, 张承武, 赵孝保, 刘志刚. 加热功率对三角形微肋阵内流动与对流换热特性的影响[J]. 化工学报, 2015, 66(6): 2062-2069.
[6]	唐继国, 阎昌琪, 孙立成. 超声波场中蒸汽气泡凝结过程及传热特性[J]. 化工学报, 2015, 66(11): 4359-4365.
[7]	莫冬传, 张晖, 吕树申. TiO₂纳米管阵列表面的池沸腾实验[J]. 化工学报, 2014, 65(S1): 308-315.
[8]	王琰, 杨建锋, 曾敏, 王秋旺. 一种新型连续螺旋折流板管壳式汽车空调回热器[J]. 化工学报, 2014, 65(S1): 264-271.
[9]	罗林聪, 潘继红, 田茂诚, 黄涛, 任毓程. 管形对水平管降膜圆周膜厚和Nusselt数的影响[J]. 化工学报, 2013, 64(8): 2760-2768.
[10]	高小明, 李惟毅, 汪健生. 凹槽表面的流动与传热特性[J]. 化工学报, 2013, 64(6): 1948-1958.
[11]	韩怀志, 李炳熙, 何玉荣, 别如山. 非对称型外凸式波节管内的传热和流动特性[J]. 化工学报, 2013, 64(6): 1916-1924.
[12]	张震, 杨卫民, 关昌峰, 丁玉梅, 阎华. 螺旋叶片转子强化传热机理分析[J]. 化工学报, 2013, 64(11): 3927-3932.
[13]	姬长发, 慕红艳, 孙瑞科, 李丽霞. 插入扰流元件换热管强化换热效果分析[J]. 化工学报, 2012, 63(S2): 58-63.
[14]	管宁，刘志刚，张承武. 微细铜丝在水中自然对流换热[J]. 化工学报, 2012, 63(7): 2070-2076.
[15]	刘志刚，张承武，管宁. 叉排微柱群内顶部缝隙对传热效率的影响[J]. 化工学报, 2012, 63(4): 1025-1031.