刀尖角容腔对直角转弯流道液流特性影响的PIV试验研究

中国机械工程 ›› 2015, Vol. 26 ›› Issue (7): 943-948.

刀尖角容腔对直角转弯流道液流特性影响的PIV试验研究

胡建军1;孔祥东1,2;侯冠男1;俞滨1;权凌霄1,2

1.燕山大学，秦皇岛，066004
2.先进锻压成型技术与科学教育部重点试验室（燕山大学），秦皇岛，066004

出版日期:2015-04-10 发布日期:2015-04-24
基金资助:
国家重点基础研究发展计划(973计划)资助项目（2014CB046405）；国家自然科学基金资助项目（51375423）；河北省重点基础研究项目（12962147D）；河北省高等学校科学技术研究青年基金资助项目(QN20131031)；燕山大学青年教师自主研究计划课题理工A类项目(14LGA014)

Experimental Investigation of Flow Characteristics of Right-Angle Turn with Different Tool Included Cavity Using PIV Technique

Hu Jianjun1;Kong Xiangdong1,2;Hou Guannan1;Yu Bin1;Quan lingxiao1,2

1.Yanshan University,Qinhuangdao,Hebei,066004
2.Key Laboratory of Advanced Forging & Stamping Technology and Science,Ministry of Education of China（Yanshan University）, Qinhuangdao, Hebei,066004

Online:2015-04-10 Published:2015-04-24
Supported by:
National Program on Key Basic Research Project (973 Program)（No. 2014CB046405）;National Natural Science Foundation of China（No. 51375423）

摘要/Abstract

摘要：

针对液压集成块典型的直角转弯流道结构，搭建了一个低速流场可视化测量试验台，采用2D-PIV流场测试技术实现了6种带有不同刀尖角容腔的直角转弯流道流场的测量。测量结果表明：在刀尖角容腔和直角转弯出流管段内拐角处分别出现涡流，前者涡流尺度随容腔长度的增加而增大，后者涡流尺度则与容腔长度无关。分析了刀尖角容腔长度及与进出口相对位置的关系对直角转弯流道液流特性的影响，发现出流方向正对刀尖角容腔时的流动损失更小。研究结果为集成块内部转弯流道结构优化提供了设计参考。

关键词: 直角转弯流道, PIV, 刀尖角容腔, 液流特性

Abstract:

This paper aimed to investigate the flow field characteristics of right-angle turn channel with different tool included cavities in the typical hydraulic manifold block. A low-speed visualization test rig was developed and the flow field of right-angle turn channel with six kinds tool included cavities was measured using 2D-PIV technique. It is found that two vortices appear in the tool included cavity and the inner corner of outlet section respectively. The vortex in the tool included cavity increases with increasing of the cavity length, the vortex in the inner corner of outlet section has nothing to do with the length of cavity. Then, the effects of length and position of the tool included cavity on flow characteristics of right-angle turn channel were analyzed and found that the arrangement of the tool included cavity opposite to the outlet direction is more advantageous. This study provides design reference for the structure improvement of flow passage in the hydraulic manifold block.

Key words: right-angle turn channel, PIV, tool included cavity, flow characteristics

中图分类号:

TH137

胡建军, 孔祥东, 侯冠男, 俞滨, 权凌霄, . 刀尖角容腔对直角转弯流道液流特性影响的PIV试验研究[J]. 中国机械工程, 2015, 26(7): 943-948.

Hu Jianjun, Kong Xiangdong, Hou Guannan, Yu Bin, Quan lingxiao, . Experimental Investigation of Flow Characteristics of Right-Angle Turn with Different Tool Included Cavity Using PIV Technique[J]. China Mechanical Engineering, 2015, 26(7): 943-948.

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