基于移动热边界的动涡旋盘温度场有限元分析
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摘要
为了得到更符合空气涡旋压缩机实际运行工况的涡旋盘温度场,依据压缩过程中涡旋盘上热边界的变化规律,计算了周期变化过程中各压缩腔的温度及对流换热系数。将涡旋盘受热面分割为多个子面,通过对这些子面以多载荷步的形式施加周期变化的对流换热载荷,实现涡旋盘动态温度场的仿真求解。研究结果表明:涡旋盘上的温度是由中心向外围逐渐扩散的,涡旋盘上的温度变化趋势表现为先快速升温,后缓慢升高,最后趋于稳定;并且当涡旋盘上的温度趋于稳定后,涡旋齿高方向温差为先逐渐减小为0,后反向增大。
In order to obtain a scroll temperature field which is more in accordance with the actual operating conditions of air scroll compressor,according to the variation law of thermal boundary on the scroll during a compression process,we calculate the temperature and convective heat transfer coefficient of each compression chamber during cyclic variation. We divide the heated surface of the scroll into many sub-surfaces. We apply a cyclically varying convective heat transfer load to these sub-surfaces in the form of multi-load steps,and realize a simulation of the dynamic temperature field of scroll. The results show that the temperature on the scroll gradually diffuses from center to periphery; the trend of scroll's temperature change is that the temperature rises rapidly first,then slowly,and finally tends to be stable; when the temperature of orbiting scroll gradually stabilizes,the temperature difference in the direction of scroll wrap is gradually reduced to zero first,and then increases in the reverse direction.
In order to obtain a scroll temperature field which is more in accordance with the actual operating conditions of air scroll compressor,according to the variation law of thermal boundary on the scroll during a compression process,we calculate the temperature and convective heat transfer coefficient of each compression chamber during cyclic variation. We divide the heated surface of the scroll into many sub-surfaces. We apply a cyclically varying convective heat transfer load to these sub-surfaces in the form of multi-load steps,and realize a simulation of the dynamic temperature field of scroll. The results show that the temperature on the scroll gradually diffuses from center to periphery; the trend of scroll's temperature change is that the temperature rises rapidly first,then slowly,and finally tends to be stable; when the temperature of orbiting scroll gradually stabilizes,the temperature difference in the direction of scroll wrap is gradually reduced to zero first,and then increases in the reverse direction.
引文
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[3]PEREIRA E L L,DESCHAMPS C J.A Heat Transfer Corr-elation for the Suction and Compression Chambers of Scroll Compressors[J].International Journal of Refrigeration,2016,(82):325-334.
[4]李超,谢文君,赵嫚.不同载荷及结构对涡旋齿强度影响的有限元分析[J].机械工程学报,2015,51(6):189-197.LI Chao,XIE Wenjun,ZHAO Man.Finite Element Analysis of the Influence of Different Loads and Structures on the Stress of Wrap[J].Journal of Mechanical Engineering,2015,51(6):189-197.
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[6]殷俊,杨美传,冯鉴.基于热应力场耦合的涡旋压缩机动涡盘有限元分析[J].压缩机技术,2011,(6):6-9.YIN Jun,YANG Meichuan,FENG Jian.Finite Element Analysis of Scroll of Scroll Compressor Based on Thermal Stress Field Coupling[J].Compressor Technology,2011,(6):6-9.
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[8]LIN C,CHANG Y,LIANG K,et al.Temperature and Thermal Deformation Analysis on Scrolls of Scroll Compressor[J].Applied Thermal Engineering,2005,25(11-12):1724-1739.
[9]LIU Y,TANG Y,CHANG Y,et al.Optimum Design of Scroll Profiles Created from Involute of Circle with Variable Radii by Using Finite Element Analysis[J].Mechanism&Machine Theory,2012,55(55):1-17.
[10]YANG Y,TANG Y J,CHANG Y C.Static and Dynamic Analysis on R410A Scroll Compressor Components[J].Purdue University,2010.
[11]刘振全.涡旋式流体机械与涡旋压缩机[M].北京:机械工业出版社,2009.LIU Zhenquan.The Scroll Fluid Machinery and Scroll Compressor[M].Beijing:China Machine Press,2009.
[12]QIANG J,WEN T.Numerical Modelling of Temperature Distribution for Orbiting Scroll Wrap in an Air Scroll Compressor[J].International Journal of Heat&Mass Transfer,2013,67(12):678-689.
[13]韩坤,唐景春,高才.涡旋压缩机动涡旋盘热弹性耦合分析[J].合肥工业大学学报(自然科学版),2013,36(7):769-772.HAN Kun,TANG Jingchun,GAO Cai.Thermal-elastic Coupled Analysis of Orbiting Scroll of Scroll Compressor[J].Journal of Hefei University of Technology(Natural Science Edition),2013,36(7):769-772.
[14]胡仁喜.ANSYS 14.0热力学有限元分析从入门到精通[M].北京:机械工业出版社,2013.HU Renxi.ANSYS 14.0 Thermodynamic Finite Element Analysis from Entry to Mastery[M].Beijing:China Machine Press,2013.
[15]龚曙光,谢桂兰,黄云清.ANSYS参数化编程与命令手册[M].北京:机械工业出版社,2009.GONG Shuguang,XIE Guilan,HUANG Yunqing.ANSYSParametric Programming and Command Manual[M].Beijing:China Machine Press,2009.
[2]王俊亭,刘国平,胡2)华,等.风冷无油涡旋空气压缩机换热计算研究[J].真空科学与技术学报,2014,34(10):1091-1096.WANG Junting,LIU Guoping,HU Ronghua,et al.Calculation of Heat Transfer in Wind-cooling Oil-free Scroll Air Compressor[J].Journal of Vacuum Science and Technology,2014,34(10):1091-1096.
[3]PEREIRA E L L,DESCHAMPS C J.A Heat Transfer Corr-elation for the Suction and Compression Chambers of Scroll Compressors[J].International Journal of Refrigeration,2016,(82):325-334.
[4]李超,谢文君,赵嫚.不同载荷及结构对涡旋齿强度影响的有限元分析[J].机械工程学报,2015,51(6):189-197.LI Chao,XIE Wenjun,ZHAO Man.Finite Element Analysis of the Influence of Different Loads and Structures on the Stress of Wrap[J].Journal of Mechanical Engineering,2015,51(6):189-197.
[5]刘国平,张国琳,李宇锋,等.耦合作用下涡旋动盘形变与应力的仿真分析[J].液压与气动,2016,(5):60-64.LIU Guoping,ZHANG Guolin,LI Yufeng,et al.Deformation and Stress Simulated Analysis of Orbiting Scroll Under the Coupling Function[J].Chinese Hydraulics&Pneumatics,2016,(5):60-64.
[6]殷俊,杨美传,冯鉴.基于热应力场耦合的涡旋压缩机动涡盘有限元分析[J].压缩机技术,2011,(6):6-9.YIN Jun,YANG Meichuan,FENG Jian.Finite Element Analysis of Scroll of Scroll Compressor Based on Thermal Stress Field Coupling[J].Compressor Technology,2011,(6):6-9.
[7]羊玢,郑庆乾,汤勇,等.非均匀温度场下涡旋压缩机涡旋盘数值仿真研究[J].液压与气动,2017,(2):51-57.YANG Fen,ZHENG Qingqian,TANG Yong,et al.Numerical Simulation of Scroll Plate of Scroll Compressor Under Inhomogeneous Temperature Field[J].Chinese Hydraulics&Pneumatics,2017,(2):51-57.
[8]LIN C,CHANG Y,LIANG K,et al.Temperature and Thermal Deformation Analysis on Scrolls of Scroll Compressor[J].Applied Thermal Engineering,2005,25(11-12):1724-1739.
[9]LIU Y,TANG Y,CHANG Y,et al.Optimum Design of Scroll Profiles Created from Involute of Circle with Variable Radii by Using Finite Element Analysis[J].Mechanism&Machine Theory,2012,55(55):1-17.
[10]YANG Y,TANG Y J,CHANG Y C.Static and Dynamic Analysis on R410A Scroll Compressor Components[J].Purdue University,2010.
[11]刘振全.涡旋式流体机械与涡旋压缩机[M].北京:机械工业出版社,2009.LIU Zhenquan.The Scroll Fluid Machinery and Scroll Compressor[M].Beijing:China Machine Press,2009.
[12]QIANG J,WEN T.Numerical Modelling of Temperature Distribution for Orbiting Scroll Wrap in an Air Scroll Compressor[J].International Journal of Heat&Mass Transfer,2013,67(12):678-689.
[13]韩坤,唐景春,高才.涡旋压缩机动涡旋盘热弹性耦合分析[J].合肥工业大学学报(自然科学版),2013,36(7):769-772.HAN Kun,TANG Jingchun,GAO Cai.Thermal-elastic Coupled Analysis of Orbiting Scroll of Scroll Compressor[J].Journal of Hefei University of Technology(Natural Science Edition),2013,36(7):769-772.
[14]胡仁喜.ANSYS 14.0热力学有限元分析从入门到精通[M].北京:机械工业出版社,2013.HU Renxi.ANSYS 14.0 Thermodynamic Finite Element Analysis from Entry to Mastery[M].Beijing:China Machine Press,2013.
[15]龚曙光,谢桂兰,黄云清.ANSYS参数化编程与命令手册[M].北京:机械工业出版社,2009.GONG Shuguang,XIE Guilan,HUANG Yunqing.ANSYSParametric Programming and Command Manual[M].Beijing:China Machine Press,2009.