机械制造与自动化2024，Vol.53Issue(4)：71-75,5.DOI:10.19344/j.cnki.issn1671-5276.2024.04.013
新型大倍率空气放大器性能影响因素的研究
Research on Influence Factors of New High-magnification Air Amplifier
董大腾 1李小宁 1孙中圣1
作者信息
- 1. 南京理工大学 机械工程学院,江苏 南京 210094
- 折叠
摘要
Abstract
To improve the comprehensive performance of air amplifier,a novel spaced jet air amplifier with annular multi-segment jet gap is designed.The influence law of the closed-to-open ratio P and the number of cells n on the entrainment ratio,output flow and internal flow is studied by combination of simulation and experiment.The research results show that with the increase of the closed-to-open ratio P,the entrainment ratio of the air amplifier increases,while the output flow gradually decreases.The number of cells n has little effect on the entrainment ratio and output flow,but smaller cell numbers will cause boundary layer separation in the diffusion mixing zone,affecting the stability of the flow.When air supply pressure is 0.5 MPa,the entrainment ratio of the spaced jet air amplifier with n=16 and P=2 is 2.55,the output flow is slightly higher,and the entrainmfent ratio is increased by 5.8%compared with the annular jet air amplifier.关键词
空气放大器/间隔射流/卷吸比/结构Key words
air amplifier/spaced jet slit/entrainment ratio/structure分类
机械制造引用本文复制引用
董大腾,李小宁,孙中圣..新型大倍率空气放大器性能影响因素的研究[J].机械制造与自动化,2024,53(4):71-75,5.
