液压集成块湍流模型修正及内流特性分析

中国机械工程

液压集成块湍流模型修正及内流特性分析

胡建军1,3;陈进3;权凌霄1,2;张晋1,2;孔祥东1,2

1.燕山大学机械工程学院，秦皇岛，066004
2.燕山大学先进制造成形技术及装备国家地方联合工程研究中心，秦皇岛，066004
3.燕山大学建筑工程与力学学院，秦皇岛，066004

出版日期:2017-07-25 发布日期:2017-07-26
基金资助:
国家自然科学基金资助项目（51641508）；
河北省自然科学基金资助项目（E2015203271）；
燕山大学青年教师自主研究计划资助项目（14LGA014）；
燕山大学博士基金资助项目（B912）
National Natural Science Foundation of China （No. 51641508）
Hebei Provincial Natural Science Foundation of China （No. E2015203271）

Turbulence Model Correction and Internal Flow Characteristics Analysis of Hydraulic Manifold Blocks

HU Jianjun1,3;CHEN Jin3;QUAN Lingxiao1,2;ZHANG Jin1,2;KONG Xiangdong1,2

1.School of Mechanical Engineering, Yanshan University, Qinhuangdao,Hebei,066004
2.Engineering Research Center of Advanced Forging & Stamping Technology and Science Built by
Central Government and Local Government, Yanshan University, Qinhuangdao,Hebei,066004
3.School of Civil Engineering and Mechanics, Yanshan University, Qinhuangdao,Hebei,066004

Online:2017-07-25 Published:2017-07-26
Supported by:
National Natural Science Foundation of China （No. 51641508）
Hebei Provincial Natural Science Foundation of China （No. E2015203271）

摘要/Abstract

摘要： 基于粒子图像测速技术（PIV）建立了带有刀尖角容腔的直角转弯流道流场的数值计算模型，并进行三维流场仿真。通过将数值计算得到的典型涡系结构与实验结果进行对比，考察了工程上常用的7种湍流模型对带有刀尖角容腔直角转弯流场的预测性能。通过定义权重误差K，筛选出S-A模型作为基础湍流模型并对其进行了参数修正。结果表明，当S-A模型Cb1取值从默认值0.1355修正为0.17时，出流方向正对刀尖角容腔模型权重误差值上升25.0％，入流方向正对刀尖角容腔模型权重误差值下降34.7％，修正后的S-A湍流模型对两种直角转弯流场的综合预测精度有所提高。运用筛选修正后的S-A湍流模型分析了4种典型直角转弯流道的内流特性，结果表明圆弧过渡直角转弯流道相比于带有刀尖角容腔的转弯流道具有更小的压力损失。

关键词: 液压集成块, 湍流模型, 直角转弯流道, 内流特性

Abstract: A corresponding numerical calculation model was established and the three-dimensional flow field simulation was carried out based on the particle image velocimetry (PIV) measurements of the flow fields of right-angle turn channels with cavities. The predictive ability of the 7 kinds of turbulence models commonly used in engineering were investigated by comparison the typical vortex structure of numerical results. By defining the weight error function K, a S-A model was selected as the basic turbulence model and were modified. The results show that when the S-A model Cb1 is modified from the default value 0.1355 to 0.17, the weight errors of the outflows facing to the right angle cavity model increase by 25.0%, and the weight errors of the inflows facing to the right angle cavity model decrease by 34.7%. In general, the predictive accuracy of modified S-A turbulence model is improved in forecasting the flow fields of two kinds right-angle turn channels with cavities. The internal flow characteristics of four typical right angle channels were analyzed by using the modified S-A turbulence model, the results show that the arc right angle flow passages have smaller pressure losses than that of the turning flow channels with cavities.

Key words: hydraulic manifold block, turbulence modle, right-angle turn channel, flow characteristics

中图分类号:

TH137

胡建军1,3;陈进3;权凌霄1,2;张晋1,2;孔祥东1,2. 液压集成块湍流模型修正及内流特性分析[J]. 中国机械工程.

HU Jianjun1,3;CHEN Jin3;QUAN Lingxiao1,2;ZHANG Jin1,2;KONG Xiangdong1,2 . Turbulence Model Correction and Internal Flow Characteristics Analysis of Hydraulic Manifold Blocks[J]. China Mechanical Engineering.

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