风量罩均速矩阵结构优化与仿真分析  

Structural Optimization and Simulation Analysis of Uniform-velocity Matrix of Air Volume Hood

作　　者：李诚 陈业盛 鲁月林 郑衍畅 LI Cheng;CHEN Yesheng;LU Yuelin;ZHENG Yanchang(School of Mechanical Engineering,Anhui Polytechnic University,Wuhu 241000,China;Huadong Photoelectric Technology Institute,Wuhu 241000,China)

机构地区：[1]安徽工程大学机械工程学院,安徽芜湖241000 [2]安徽华东光电技术研究所,安徽芜湖241000

出　　处：《安徽工程大学学报》2023年第3期16-21,共6页Journal of Anhui Polytechnic University

基　　金：安徽工程大学2020年“中青年拔尖人才”培养计划基金资助项目;安徽工程大学校级科研基金资助项目(XJKY2020010)。

摘　　要：为探究风量罩均速矩阵结构对风量测量结果准确度的影响,建立了基于CFD(Computational Fluid Dynamics)的风量测量仿真方法,并对现有典型16点均速矩阵和优化后的圆环均速矩阵进行了仿真分析。结果表明,相比于典型16点均速矩阵,优化后的圆环均速矩阵对流体的阻碍作用更小,流体通过矩阵后的风速分布未发生明显变化,矩阵结构迎风面的涡流现象和背风面的回流现象得到明显抑制。对比了5种风量工况下典型16点均速矩阵和优化后的圆环均速矩阵的测量相对误差可知,圆环均速矩阵测量准确度更高,性能更优越。A simulation method for air volume measurement was established based on CFD(Computational Fluid Dynamics),and the existing typical 16-point uniform-velocity matrix and the optimized toroidal uniform-velocity matrix were simulated and analyzed in order to explore the impact of air volume hood uniform-velocity matrix structure on the accuracy of air volume measurement results.The results demonstrate that the optimized toroidal uniform-velocity matrix has less fluid obstruction than the typical 16-point uniformvelocity matrix,that the wind speed distribution of the fluid passing through the matrix shows invisible change,and that the vortex phenomenon on the windward side and the backflow phenomenon on the leeward side of the matrix structure are significantly inhibited.The measured relative errors of the optimized toroidal uniform-velocity matrix and the typical 16-point uniform-velocity matrix are compared for five different air flow cases.The toroidal uniform-velocity matrix performs better and has greater measurement accuracy.

关 键 词：风量罩 均速矩阵 风量测量 CFD仿真 相对误差 

分 类 号：TH71[机械工程—测试计量技术及仪器]