仿鲨鳃扰流结构的过渡段换热表面优化设计

doi:10.13229/j.cnki.jdxbgxb20170699

摘要/Abstract

摘要：

借鉴长尾鲨鳃部呼吸作用时鳃弓的扰流特性及湍流发生机理,设计了带有肋式扰流结构的仿生换热表面,并建立了带有此仿生换热表面的过渡段双腔室模型。利用FLUENT仿真软件进行数值模拟,得到该过渡段冷却腔室内的温度场、速度矢量场及努塞尔数分布。采用全面试验设计建立了关于肋式扰流结构高度和宽度设计变量对换热表面的加权平均温度和最小压强的代理模型,通过粒子群优化算法获得此肋式扰流结构的最佳设计方案。结果表明,带有肋式扰流结构的仿生换热表面能够强化射流冲击冷却,可将过渡段冷却腔室内的冷却效率提升340%。

关键词: 工程仿生学, 仿生换热表面, 数值模拟, 优化设计, 肋式扰流结构

Abstract:

Based on flow characteristics around the gill of alopias, a bionic thermal surface with a rib turbulator was designed in a simplified gas turbine transition piece. The thermal performance of the heat transfer surface with a rib turbulator in a double-chamber model was investigated. The CFD simulation was carried out using software FLUENT to obtain the temperature contour and the velocity vector distribution on the thermal surface. The impinging cooling efficiency and the Nusselt number were computed also. The regression equation about the area weighted average temperature and the minimum pressure on the thermal surface was obtained by using a comprehensive experimental design and regression analysis method to study the effect of height and width of the turbulence generator. The optimal height and width of the ribbed turbulence generator were evaluated by the particle swarm optimization algorithm. The simulation results indicate that the bionic thermal surface can improve the convective heat transfer and the cooling efficiency of the double-chamber is improved by 340%.

Key words: engineering bionics, bionic thermal surface, numerical simulation, optimal design, rib turbulator

中图分类号:

TB17

郭昊添,徐涛,梁逍,于征磊,刘欢,马龙. 仿鲨鳃扰流结构的过渡段换热表面优化设计[J]. 吉林大学学报(工学版), 2018, 48(6): 1793-1798.

GUO Hao-tian,XU Tao,LIANG Xiao,YU Zheng-lei,LIU Huan,MA Long. Optimization on thermal surface with rib turbulator inspired by turbulence of alopias' gill in simplified gas turbine transition piece[J]. Journal of Jilin University(Engineering and Technology Edition), 2018, 48(6): 1793-1798.

图/表 9

图1

图2

图3

表1

表2

设计变量及输出结果"

序号	H/mm	W/mm	T/K	P/Pa	η/10^-2	$Nu ˉ$
1	5.13	5.13	1235.28	1 623 164.2	6.47	2146.82
2	5.13	10.26	1234.19	1 623 907.5	6.58	2400.93
3	5.13	15.39	1220.65	1 622 719.4	7.93	2441.41
4	5.13	20.52	1228.74	1 622 658.6	7.13	2205.34
5	10.26	5.13	1220.11	1 622 920.7	7.99	2408.47
6	10.26	10.26	1229.48	1 623 225.9	7.05	2194.11
7	10.26	15.39	1221.64	1 622 817.5	7.84	2295.77
8	10.26	20.52	1205.32	162 4361.8	9.47	3753.20
9	15.39	5.13	1199.92	1 623 140.9	10.01	3987.20
10	15.39	10.26	1190.40	1 624 660.5	10.96	4068.83
11	15.39	15.39	1212.31	1 624 927.0	8.77	2823.34
12	15.39	20.52	1198.00	1 624 995.1	10.20	3895.90
13	20.52	5.13	1154.73	1 625 081.6	14.53	4911.70
14	20.52	10.26	1207.83	1 623 267.7	9.22	3461.25
15	20.52	15.39	1184.81	1 624 841.9	11.52	4064.44
16	20.52	20.52	1183.00	1 624 720.4	11.7	3814.96

表2

图4

表3

光滑换热表面与仿生换热表面传热特性对比"

	T_min/K	T/K	$η$
光滑换热表面	783	1262.68	3.73×10^-2
仿生换热表面	575	1135.8	16.42×10^-2

表3

图5

图6

参考文献 10

[1]	蒋洪德, 任静, 李雪英 , 等. 重型燃气轮机现状与发展趋势[J]. 中国电机工程学报, 2014,34(29):5096-5102. doi: 10.13334/j.0258-8013.pcsee.2014.29.011
	Jiang Hong-de, Ren Jing, Li Xue-ying , et al. Status and development trend of the heavy duty gas turbine[J]. Proceedings of the CSEE, 2014,34(29):5096-5102. doi: 10.13334/j.0258-8013.pcsee.2014.29.011
[2]	Xue Rui, Hu Chun-bo, Sethi Vishal , et al. Effect of steam addition on gas turbine combustor design and performance[J]. Applied Thermal Engineering, 2016,104:249-257. doi: 10.1016/j.applthermaleng.2016.05.019
[3]	刘光洁, 徐涛, 李俊楼 , 等, 燃气轮机过渡段双腔室模型设计及优化[J]. 吉林大学学报:工学版, 2014,44(5):1360-1365.
	Liu Guang-jie, Xu Tao, Li Jun-lou , et al. Design and optimization of double chamber model of gas turbine transition piece[J]. Journal of Jilin University(Engineering and Technology Edition), 2014,44(5):1360-1365.
[4]	徐涛, 于征磊, 张炜 , 等. 燃气轮机燃烧室过渡段冷却结构尺寸优化设计[J]. 吉林大学学报:工学版, 2012,42(4):863-866.
	Xu Tao, Yu Zheng-lei, Zhang Wei , et al. Size optimization design of cooling structure in transition segment of gas turbine combustor[J]. Journal of Jilin University(Engineering and Technology Edition), 2012,42(4):863-866.
[5]	Yu Zheng-lei, Xu Tao, Li Jun-lou , et al. Comparison of a series of double chamber model with various hole angles for enhancing cooling effectiveness[J]. International Communications in Heat and Mass Transfer, 2013(44):38-44. doi: 10.1016/j.icheatmasstransfer.2013.03.002
[6]	Wang L, Wang T . Investigation of the effect of perforated sheath on thermal-flow characteristics over a gas turbine reverse-flow combustor, part 1—experiment[C]// Proceedings of the Asme Turbo Expo: Turbine Technical Conference and Exposition, San Antonio, TX, USA, 2013:GT2013-94474.
[7]	Wang L, Wang T . Investigation of the effect of perforated sheath on thermal-flow characteristics over a gas turbine reverse-flow combustor, part 2—computational analysis[C]// Proceedings of the Asme Turbo Expo: Turbine Technical Conference and Exposition, San Antonio, TX, USA, 2013:GT2013-94475.
[8]	Cui J, Fu Y B . A numerical study on pressure drop in microchannel flow with different bionic micro-grooved surfaces[J]. Journal of Bionic Engineering, 2012,9(1):99-109. doi: 10.1016/S1672-6529(11)60102-9
[9]	彭毅 . 基于植物叶片结构的仿生均热板研究[D]. 广州:华南理工大学机械与汽车工程学院, 2015.
	Peng Yi . Study of bionic vapor chamber based on the plant leaf structure[D]. Guangzhou: College of Mechanical and Automotive Engineering, South China Univesity of Technology, 2015.
[10]	Wootton T P, Sepulveda C A, Wegner N C . Gill morphometrics of the thresher sharks (genus alopias): correlation of gill dimensions with aerobic demand and environmental oxygen[J]. Journal of Morphology, 2015,276(5):589-600. doi: 10.1002/jmor.20369 pmid: 25703507

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类别	边界条件	数值
燃气入口	燃气流量/(kg·s^-1) 入口温度/K 湍流强度/% 水力直径/m	32.72 1300 5 0.324
燃气出口	出口压力/MPa 湍流强度/% 水力直径/m 对流换热系数/[W·(m²·K^-1)]	1.573 5 0.324 10
冷却空气腔室	冷却空气温度/K 冷却空气压力/MPa 压力恢复系数湍流强度/% 水力直径/m	300 1.6558 0.98 10 0.01026