工程车辆翼型管散热器冷侧翅片信噪比分析
|
摘要
为提高某工程车辆管片式散热器综合性能,以降低空气侧压力损失为前提,选用NACA23021翼型建立散热器换热管代替原有的扁平管,利用fluent对改进前后散热器空气侧换热系数和压力损失进行仿真分析,并对比两者的综合性能评价因子;进一步分析结构参数对翼型管翅片散热器性能的影响,利用正交试验与信噪比相结合分析各结构参数的敏感度。研究结果表明:在入口空气流速2～10 m/s范围内,散热器空气侧换热系数和压力损失的试验与仿真误差值小于5%;在仿真区间内,NACA23021翼型管翅片的综合评价因子较扁平管翅片略高,在入口10m/s时高出约23%;通过信噪比分析,得出换热管的长径对翼型管散热器性能影响最大,为28.88%,管列距、管类型和管排距对其影响次之,分别为23.91%、20.50%和11.18%,翅片间距和翅片厚度对其影响最小,分别为9.63%和5.90%。
In order to improve the comprehensive performance of tube-fin radiators for construction vehicles, on the premise of reducing pressure loss, the airfoil NACA23021 was used to shape the tube model of the radiator, and the same simulation method was used to obtain the pressure loss and heat transfer coefficient on the air side, then, the comprehensive performance evaluation factor was acquired. The influence of the structural parameters on the performance of the fin tube fin radiator is further analyzed. The sensitivity of each structural parameter is analyzed by orthogonal test and signal-to-noise ratio. The results show that the error between experimental data and simulation results for the airside pressure loss and heat transfer coefficient is less than 5% over the inlet velocity range from 2 to 10 m/s. In the same range, the comprehensive evaluation factor of NACA23021 airfoil fin is about 23% higher than that of flat fin in the entrance 10 m/s. Through the analysis of signal-to-noise ratio, it is concluded that the heat pipe length diameter of finned tube radiator performance impact, 28.88%, tube spacing, tube type and tube spacing on the influence of the times,were 23.91%, 20.50% and 11.18%, fin pitch and fin thickness with minimal impact on the 9.63% and5.90% respectively.
In order to improve the comprehensive performance of tube-fin radiators for construction vehicles, on the premise of reducing pressure loss, the airfoil NACA23021 was used to shape the tube model of the radiator, and the same simulation method was used to obtain the pressure loss and heat transfer coefficient on the air side, then, the comprehensive performance evaluation factor was acquired. The influence of the structural parameters on the performance of the fin tube fin radiator is further analyzed. The sensitivity of each structural parameter is analyzed by orthogonal test and signal-to-noise ratio. The results show that the error between experimental data and simulation results for the airside pressure loss and heat transfer coefficient is less than 5% over the inlet velocity range from 2 to 10 m/s. In the same range, the comprehensive evaluation factor of NACA23021 airfoil fin is about 23% higher than that of flat fin in the entrance 10 m/s. Through the analysis of signal-to-noise ratio, it is concluded that the heat pipe length diameter of finned tube radiator performance impact, 28.88%, tube spacing, tube type and tube spacing on the influence of the times,were 23.91%, 20.50% and 11.18%, fin pitch and fin thickness with minimal impact on the 9.63% and5.90% respectively.
引文
[1]W M凯斯,A L伦敦.紧凑式热交换器[M].北京:科学出版社,1997:66-79W M Kays,A L London.Compact Heat Exchangers[M].Beijing:Science Press,1997:66-79
[2]Yun J Y,Lee K S.Influence of Design Parameters on the Heat Transfer and Flow Friction Characteristics of the Heat Exchanger With Slit Fins[J].International Journal of Heat&Mass Transfer,2000,43(14):2529-2539
[3]Ahmed S E S,Ibrahiem E Z,Mesalhy O M,et al.Heat Transfer Characteristics of Staggered Wing-shaped Tubes Bundle at Different Angles of Attack[J].Heat and Mass Transfer,2014,50(8):1091-1102
[4]Ahmed S E S,Ibrahiem E Z,Mesalhy O M,et al.Effect of Attack and Cone Angels on Air Flow Characteristics for Staggered Wing Shaped Tubes Bundle[J].Heat&Mass Transfer,2015,51(7):1001-1016
[5]刘佳鑫.工程机械散热模块传热性能研究[D].长春:吉林大学,2013Liu Jiaxin.Research on Heat Transfer Performance of Heat-dissipation Module for Construction Machinery[D].Changchun:Jilin University,2013
[6]刘佳鑫,秦四成,蒋炎坤,等.工程车辆翼型热管式散热器性能研究[J].华中科技大学学报:自然科学版,2017,45(3):99-104LIU Jiaxin,QIN Sicheng,JIANG Yankun,et al.Research on Performance of Fin and Wing-shaped Tube Radiator for Construction Vehicles[J].Journal of Huazhong University of Science and Technology:Natural Science Edition,2017,45(3):99-104
[7]肖宝兰,俞小莉,韩松,等.散热带翅片参数对车用水箱散热器流动传热性能的影响[J].内燃机工程,2010,31(3):85-89XIAO Baolan,YU Xiaoli,HAN Song,et al.Effects of FinParameters on the Thermal Hydraulic Performance of a Vehicular Radiator[J].Chinese Internal Combustion Engine Engineering,2010,31(3):85-89
[8]肖宝兰,俞小莉,韩松,等.翅片参数对车用中冷器流动传热性能的影响[J].浙江大学学报(工学版),2010(11):2164-2168XIAO Baolan,YU Xiaoli,HAN Song,et al.The Study of Effects of Fin Parameters on Thermal Hydraulic Performance of a Vehicular Charged Air Cooler[J].Journal of Zhejiang University(Engineering Science),2010(11):2164-2168
[9]黄小辉,毕小平.管带式水散热器冷却空气侧阻力性能数值模拟[J].内燃机工程,2010,31(1):100-103HUANG Xiaohui,BI Xiaoping.Numerical Simulation of Resistance Characteristic at Cooling Air Side of a StripTube Radiator[J].Chinese Internal Combustion Engine Engineering,2010,31(1):100-103
[10]刘佳鑫,秦四成,徐振元,等.基于CFD仿真的车辆散热器性能对比分析[J].华南理工大学学报(自然科学版),2012,40(5):24-29LIU Jiaxin,QIN Sicheng,XU Zhenyuan,et al.Comparative Analysis of Heat Exchange Performance of Vehicle Radiator Based on CFD Numerical Simulation[J].Journal of South China University of Technology(Natural Science Edition),2012,40(5):24-29
[11]Liu J,Qin S,Jiang Y,et al.Numerical and Experimental Investigation on Heat Exchange Performance for Heat Dissipation Module for Construction Vehicles[R].SAE Technical Paper 2017-01-0624,2017
[12]Taler D.Experimental Determination of Correlations for mean Heat Transfer Coefficients in Plate Fin and Tube Heat Exchangers[J].Archives of Thermodynamics,2012,33(3):1-24
[13]Tarrad A H,Khudor D S.A Correlation for the Air-Side Heat Transfer Coefficient Assessment in Continuous FlatPlate Finned Heat Exchangers[J].Journal Record,2015,7(2):021009
[14]张银亮,蔡惠坤,沈超.工程机械百叶窗翅片式散热器的多目标优化设计[J].中国工程机械学报,2016,14(6):509-513ZHANG Yinliang,CAI Huikun,SHEN Chao.Multi-objective Optimization for Engineering Machinery Radiator with Louvered Fins[J].Chinese Journal of Construction Machinery,2016,14(6):509-513
[15]Wang C C,Chi K Y,Chang C J.Heat Transfer and Friction Characteristics of Plain Fin-and-tube Heat Exchangers,Part II:Correlation[J].International Journal of Heat&Mass Transfer,2000,43(15):2693-2700
[16]王万中.试验的设计与分析[M].北京:高等教育出版社,2004WANG Wanzhong.Design and Analysis of The Experiment[M].Beijng:Higher Education Press,2004
[17]董军启.车辆冷却系统空气侧特性研究[D].上海:上海交通大学,2008DONG Junqi.Rsearch on Air Side Flow and Heat Transfer Character of Vehicle Cooling System[D].Shanghai:shanghai Jiao Tong University,2008
[2]Yun J Y,Lee K S.Influence of Design Parameters on the Heat Transfer and Flow Friction Characteristics of the Heat Exchanger With Slit Fins[J].International Journal of Heat&Mass Transfer,2000,43(14):2529-2539
[3]Ahmed S E S,Ibrahiem E Z,Mesalhy O M,et al.Heat Transfer Characteristics of Staggered Wing-shaped Tubes Bundle at Different Angles of Attack[J].Heat and Mass Transfer,2014,50(8):1091-1102
[4]Ahmed S E S,Ibrahiem E Z,Mesalhy O M,et al.Effect of Attack and Cone Angels on Air Flow Characteristics for Staggered Wing Shaped Tubes Bundle[J].Heat&Mass Transfer,2015,51(7):1001-1016
[5]刘佳鑫.工程机械散热模块传热性能研究[D].长春:吉林大学,2013Liu Jiaxin.Research on Heat Transfer Performance of Heat-dissipation Module for Construction Machinery[D].Changchun:Jilin University,2013
[6]刘佳鑫,秦四成,蒋炎坤,等.工程车辆翼型热管式散热器性能研究[J].华中科技大学学报:自然科学版,2017,45(3):99-104LIU Jiaxin,QIN Sicheng,JIANG Yankun,et al.Research on Performance of Fin and Wing-shaped Tube Radiator for Construction Vehicles[J].Journal of Huazhong University of Science and Technology:Natural Science Edition,2017,45(3):99-104
[7]肖宝兰,俞小莉,韩松,等.散热带翅片参数对车用水箱散热器流动传热性能的影响[J].内燃机工程,2010,31(3):85-89XIAO Baolan,YU Xiaoli,HAN Song,et al.Effects of FinParameters on the Thermal Hydraulic Performance of a Vehicular Radiator[J].Chinese Internal Combustion Engine Engineering,2010,31(3):85-89
[8]肖宝兰,俞小莉,韩松,等.翅片参数对车用中冷器流动传热性能的影响[J].浙江大学学报(工学版),2010(11):2164-2168XIAO Baolan,YU Xiaoli,HAN Song,et al.The Study of Effects of Fin Parameters on Thermal Hydraulic Performance of a Vehicular Charged Air Cooler[J].Journal of Zhejiang University(Engineering Science),2010(11):2164-2168
[9]黄小辉,毕小平.管带式水散热器冷却空气侧阻力性能数值模拟[J].内燃机工程,2010,31(1):100-103HUANG Xiaohui,BI Xiaoping.Numerical Simulation of Resistance Characteristic at Cooling Air Side of a StripTube Radiator[J].Chinese Internal Combustion Engine Engineering,2010,31(1):100-103
[10]刘佳鑫,秦四成,徐振元,等.基于CFD仿真的车辆散热器性能对比分析[J].华南理工大学学报(自然科学版),2012,40(5):24-29LIU Jiaxin,QIN Sicheng,XU Zhenyuan,et al.Comparative Analysis of Heat Exchange Performance of Vehicle Radiator Based on CFD Numerical Simulation[J].Journal of South China University of Technology(Natural Science Edition),2012,40(5):24-29
[11]Liu J,Qin S,Jiang Y,et al.Numerical and Experimental Investigation on Heat Exchange Performance for Heat Dissipation Module for Construction Vehicles[R].SAE Technical Paper 2017-01-0624,2017
[12]Taler D.Experimental Determination of Correlations for mean Heat Transfer Coefficients in Plate Fin and Tube Heat Exchangers[J].Archives of Thermodynamics,2012,33(3):1-24
[13]Tarrad A H,Khudor D S.A Correlation for the Air-Side Heat Transfer Coefficient Assessment in Continuous FlatPlate Finned Heat Exchangers[J].Journal Record,2015,7(2):021009
[14]张银亮,蔡惠坤,沈超.工程机械百叶窗翅片式散热器的多目标优化设计[J].中国工程机械学报,2016,14(6):509-513ZHANG Yinliang,CAI Huikun,SHEN Chao.Multi-objective Optimization for Engineering Machinery Radiator with Louvered Fins[J].Chinese Journal of Construction Machinery,2016,14(6):509-513
[15]Wang C C,Chi K Y,Chang C J.Heat Transfer and Friction Characteristics of Plain Fin-and-tube Heat Exchangers,Part II:Correlation[J].International Journal of Heat&Mass Transfer,2000,43(15):2693-2700
[16]王万中.试验的设计与分析[M].北京:高等教育出版社,2004WANG Wanzhong.Design and Analysis of The Experiment[M].Beijng:Higher Education Press,2004
[17]董军启.车辆冷却系统空气侧特性研究[D].上海:上海交通大学,2008DONG Junqi.Rsearch on Air Side Flow and Heat Transfer Character of Vehicle Cooling System[D].Shanghai:shanghai Jiao Tong University,2008