气动量仪锥度管内流场对浮标稳定性分析

魏先杰; 龙威; 雷基林; 辛晓承; 高浩

doi:10.13224/j.cnki.jasp.20210040

气动量仪锥度管内流场对浮标稳定性分析

doi: 10.13224/j.cnki.jasp.20210040

1.
昆明理工大学机电工程学院，昆明 650500
2.
昆明理工大学交通工程学院云南省内燃机重点实验室，昆明 650500

基金项目: 国家自然科学基金（51766006）；云南省科技厅面上项目（2018FB096）；云南省教育厅科学研究基金（2021Y113）；学生课外学术科技创新基金（2020YB048）

详细信息

作者简介:
魏先杰（1992-），男，工程师，硕士，主要从事气体动力学研究。

通讯作者:
龙威（1981-），女，教授，博士，主要从事气体动力学研究。E-mail：daifor@163.com

中图分类号: V264.1
计量
- 文章访问数: 65
- HTML浏览量: 9
- PDF量: 63
- 被引次数: 0
出版历程
- 收稿日期: 2020-01-26
- 刊出日期: 2021-12-28

Stability analysis on flow field within taper tube of pneumatic measuring instrument in relation to buoy

1.
Faculty of Mechanical and Electrical Engineering，Kunming University of Science and Technology，Kunming 650500，China
2.
Yunnan Province Key Laboratory of Engines，Faculty of Transportation Engineering，Kunming University of Science and Technology，Kunming 650500，China

摘要

摘要: 从绕流问题入手，通过流场分析研究发现气流自下而上经过浮标后会引发尾部紊流和涡旋。随着涡旋移动脱落，湍动流场就会呈现脉动压力以交变形式作用于浮标两侧，引发浮标左右摇摆，示数不稳。进一步在浮标尾部设计增加不同长度和角度的导向面，通过对尾部流场引流来降低尾部旋涡的影响；同时增强引流导向区局部气阻提高浮标的工作稳定性。研究发现：当导向面长度增大至2 mm时，浮标与锥度管道内壁气流刚度增强，浮标偏转角由 $8 °$ 降低至 $0.5 °$ 。当导向面角度超过 $10 °$ 时，受科恩达效应的影响,浮标出现相对低压区，偏转角超过 $15 °$ 。
- 气动量仪 /
- 浮标 /
- 工作稳定性 /
- 脱体旋涡 /
- 科恩达效应
Abstract: The problem of flow around the buoy was analyzed.It was found that the tail turbulence and vortices were caused when the flow passed through the buoy from bottom to top.As the vortex moved and fell off，the turbulent flow field showed fluctuating pressure acting on both sides of the buoy in an alternating form，causing the buoy to swing from side to side and the indicator to be unstable.Further，a guide surface with length and angle was added at the tail of the buoy to reduce the influence of tail-vortex by draining the flow field at the tail.At the same time，the local air resistance in the drainage guide area was enhanced to improve the working stability of the buoy.The results showed that when the length of the guide surface increased to 2 mm，the airflow stiffness of the buoy and the inner wall of the glass pipe increased，and the deflection angle of the buoy decreased from $8 °$ to $0.5 °$ .When the angle of the guide surface exceeded $10 °$ ，a relatively low pressure area appeared and the deflection angle exceeded $15 °$ due to the influence of the Cornda effect.
- pneumatic measuring instrument /
- buoy /
- working stability /
- detached vortex /
- Coanda effect

HTML

参考文献(22)

[1]	TANNER C J.Air gauging-history and future developments[J].Institution of Production Engineers Journal，1958,37（7）:448-462.
[2]	SCHUETZ G.Air gaging/gets better with age[J].Quality，2008，47（3）:28-33.
[3]	RUCKI M.Step response of the air gauge[J].Metrology and Measurement Systems，2007，14（3）:429-436.
[4]	XIE Tuqiang,YANG Qingping,JONES B E,et al.Theoretical and experimental studies of a novel cone-jet sensor[J].IEEE Transactions on Instrumentation and Measurement,2001,50（5）:1081-1084.
[5]	SCHUETZ G.Pushing the limits of air gaging-and keeping them there:air gaging gives you a fast measurement device that provides superior reliability in the dirtiest shop environment[J].Quality,2015,54（7）:22-26.
[6]	VACHARANUKUL K，MEKID S.In-process dimensional inspection sensors[J].Measurement，2005,38（3）:204-218.
[7]	RUCKI M，BARISIC B，SZALAY T.Analysis of air gage inaccuracy caused by flow instability[J].Measurement，2008，41（6）:655-661.
[8]	RUCKI M，BARISIC B，VARGA G.Air gauges as a part of the dimensional inspection systems[J].Measurement，2010，43（1）:83-91.
[9]	LIU Jun，WANG Guanglin.Pneumatic measurement approach for form tolerances of inner hole in spool valve[J].Applied Mechanics and Materials，2010，42:480-484.
[10]	LIU Jun，WANG Guanglin,LIU Jie,et al.Gross error detection in pneumatic measurement of form tolerance based on fuzzy assessment[J].Advanced Materials Research，2011，305:69-74.
[11]	SCHUETZ G.Air gaging for orthopedic devices[J].Quality，2011，50（10）:32-35.
[12]	RUCKI M.Dynamic properties of small chamber air gages[J].Journal of Dynamic Systems.Measurement and Control，2012,134（1）:011001.1-011001.6.
[13]	BARTSCH C，H?LLE M，JESCHKE P,et al.1D flow-adaptive measurement grid for improved pneumatic probe measurements[J].Journal of Engineering for Gas Turbines and Power，2016，138(3):031601.1-031601.8.
[14]	AN S，GIANCHANDANI Y B.A dynamic calibration method for pirani gauges embedded in fluidic networks[J].Journal of Microelectromechanical Systems，2014，23（3）:699-709.
[15]	HOELLE M，BARTSCH C，JESCHKE P.Evaluation of measurement uncertainties for pneumatic mulit-hole probes using a Monte Carlo method[J].Journal of Engineering for Gas Turbines and Power，2017，139（7）:072605.1-072605.8.
[16]	RUCKI M.Reduction of uncertainty in air gauge adjustment process[J].IEEE Transactions on Instrumentation and Measurement，2008，58（1）:52-57.
[17]	JAKUBOWICZ M，RUCKI M，SIEMI?TKOWSKI Z.Computer approximation of air gauge dynamic characteristics using the sine input test rig[J].MATEC Web of Confer ences，2019，252:02002.1-02002.4.
[18]	ZHANG Wanjun，ZHANG Feng，ZHANG Jingxuan，et al.Application of PLC in pneumatic measurement control system[J].IOP Conference Series:Materials Science and Engineering，2018，452（4）:42-74.
[19]	ZHANG Wanjun，ZHANG Feng，ZHANG Jingxuan，et al.Curved measurement theory of honing pneumatic measurement system and optimization of measurement parameters[J].Journal of Physics Conference，2018，1064（1）:12-28.
[20]	JAKUBOWICZ M，RUCKI M，BABI? M.Uncertainty of sine input calibration apparatus for the air gauges[M].Cham,Switzerland:Springer，2019.
[21]	魏先杰,龙威,邓伟.气动量仪测头流场对发动机连杆测量稳定性的影响分析[J].机械科学与技术,2021,40（3）:428-434.
[22]	刘玉初.气动量仪[M].北京:机械工业出版社,1991.