基于Workbench的比例多路阀流固耦合数值分析
|
摘要
利用流体力学软件Fluent对某型比例多路阀内的流场进行分析,分析结果表明:阀口处的压降最大,流速大幅度增加,阀芯拐角处产生空穴现象。分析阀芯结构因素对产生这些结果的影响,并对阀芯上开K形槽口进行优化,结果表明经过结构优化后阀腔内的液流更加平稳。最后利用Workbench流固耦合技术对改进后的阀芯进行了有限元分析,得出阀芯的形变量分布图和温度分布图与实践检测结果一致,为阀芯结构的设计和材料的选择提供了参考。
The flow field of a certain proportional multi-way valve were analyzed by using fluid dynamics software Fluent. The results of analysis shows that the valve inlet pressure drop is most obviously,the largest velocity increased significantly,the cavitation phenomenon is occurred around the valve corner. The valve core structure factors influence on these results was analyzed,and opening K shape notch on the valve core was optimized,the results shows that the valve cavity flow more smoothly after the optimized structure.Finally,the improved valve core was carried on the finite element analysis by using the fluid-structure interaction technology on workbench,it is concluded that the shape of valve core variable distribution and temperature distribution to consistent with the practical test results,and provided an important basis on choosing the structure and material of valve core.
The flow field of a certain proportional multi-way valve were analyzed by using fluid dynamics software Fluent. The results of analysis shows that the valve inlet pressure drop is most obviously,the largest velocity increased significantly,the cavitation phenomenon is occurred around the valve corner. The valve core structure factors influence on these results was analyzed,and opening K shape notch on the valve core was optimized,the results shows that the valve cavity flow more smoothly after the optimized structure.Finally,the improved valve core was carried on the finite element analysis by using the fluid-structure interaction technology on workbench,it is concluded that the shape of valve core variable distribution and temperature distribution to consistent with the practical test results,and provided an important basis on choosing the structure and material of valve core.
引文
[1]王福山,陈建长,万箭波,等.液压多路换向阀试验台研制[J].工程机械,2006,37(12):42-47.WANG Fushan,CHEN Jianchang,WAN Jianbo.Development of a Test Bench for Hydraulic Multi-way Directional Valves[J].Construction Machinery and Equipment,2006,37(12):42-47.
[2]许京荆.ANSYS Workbench数值模拟技术[M].北京:中国水利水电出版社.
[3]龙靖宇,杨阳,黄浩,等.基于Fluent的双喷嘴挡板电液伺服阀主阀流场的可视化仿真[J].武汉科技大学学报:自然科学版,2010,33(3):307-309.LONG Jingyu,YANG Yang,HUANG Hao.Visual Simulation of Flow Field Inside Main Valve of Dual-nozzle Flapper Electrohydraulic Servo Valve with Fluent[J].Journal Ofwuhan University of Science and Tecjnolog,2010,33(3):307-309.
[4]王春江,李向民,陈锋.长单索结构的多参数流固耦合分析[J].力学与实践,2013,32(2):22-25.WANG Chunjiang,LI Xiangmin,CHEN Feng.Multi-Parameter Analysis of Fluid-structure Interaction of Long Single Cable Structures[J].Mechnics in Engineering,2013,32(2):22-25.
[5]孙伟,周华,张增猛,等.负载敏感液控多路阀性能测试[J].机床与液压,2007,35(8):107-109.SUN Wei,ZHOU Hua,ZHANG Zengmeng.Dynamic Tests for Load-sensitive Multi-way Valve Based on Lab VIEW[J].Machine Tool&Hydrauliccs,2007,35(8):107-109.
[6]罗艳蕾,邱雪,陈伦军.基于Fluent多路阀中压力补偿阀流场的仿真分析[J].机床与液压,2012,40(21):146-149.Luo Yanlei,Qiu Xue,Chen Lunjun.Simulation Analysis on the Flow Fields of the Pressure Compensated Valve in the Multi-passage Valve Based on Fluent[J].Machine Tool&Hydraulics,2012,40(21):146-149.
[7]王福军.计算流体动力学分析[M].北京:清华大学出版社,2011.
[8]XU B,LIU Y J,YANG H Y,et al.The Sixth International Fluid Power Conference,2008[C]//Dresden Germany:Workshop,Group,2008.
[9]赵阳,郑政宝.基于流场仿真的多路阀流道结构优化设计[J].流体传动与控制,2007,24(6):86-88.ZHAO Yang,ZHENG Zhengbao.Optimum Design of Flow Passage in Directional Control Valve Based on Flow Simulation[J].Fluid Power Transmission and Control,2007,24(6):86-88.
[2]许京荆.ANSYS Workbench数值模拟技术[M].北京:中国水利水电出版社.
[3]龙靖宇,杨阳,黄浩,等.基于Fluent的双喷嘴挡板电液伺服阀主阀流场的可视化仿真[J].武汉科技大学学报:自然科学版,2010,33(3):307-309.LONG Jingyu,YANG Yang,HUANG Hao.Visual Simulation of Flow Field Inside Main Valve of Dual-nozzle Flapper Electrohydraulic Servo Valve with Fluent[J].Journal Ofwuhan University of Science and Tecjnolog,2010,33(3):307-309.
[4]王春江,李向民,陈锋.长单索结构的多参数流固耦合分析[J].力学与实践,2013,32(2):22-25.WANG Chunjiang,LI Xiangmin,CHEN Feng.Multi-Parameter Analysis of Fluid-structure Interaction of Long Single Cable Structures[J].Mechnics in Engineering,2013,32(2):22-25.
[5]孙伟,周华,张增猛,等.负载敏感液控多路阀性能测试[J].机床与液压,2007,35(8):107-109.SUN Wei,ZHOU Hua,ZHANG Zengmeng.Dynamic Tests for Load-sensitive Multi-way Valve Based on Lab VIEW[J].Machine Tool&Hydrauliccs,2007,35(8):107-109.
[6]罗艳蕾,邱雪,陈伦军.基于Fluent多路阀中压力补偿阀流场的仿真分析[J].机床与液压,2012,40(21):146-149.Luo Yanlei,Qiu Xue,Chen Lunjun.Simulation Analysis on the Flow Fields of the Pressure Compensated Valve in the Multi-passage Valve Based on Fluent[J].Machine Tool&Hydraulics,2012,40(21):146-149.
[7]王福军.计算流体动力学分析[M].北京:清华大学出版社,2011.
[8]XU B,LIU Y J,YANG H Y,et al.The Sixth International Fluid Power Conference,2008[C]//Dresden Germany:Workshop,Group,2008.
[9]赵阳,郑政宝.基于流场仿真的多路阀流道结构优化设计[J].流体传动与控制,2007,24(6):86-88.ZHAO Yang,ZHENG Zhengbao.Optimum Design of Flow Passage in Directional Control Valve Based on Flow Simulation[J].Fluid Power Transmission and Control,2007,24(6):86-88.