风速表在环形风洞检测的阻塞修正研究  

Research on blocking correction of anemometer in annular wind tunnel detection

作　　者：吴宇 吴丹 李学良 杨燕 Wu Yu;Wu Dan;Li Xueliang;Yang Yan(GuangxiResearch Institute of Metrology&Test,Nanning 530007,China)

机构地区：[1]广西壮族自治区计量检测研究院,南宁530007

出　　处：《国外电子测量技术》2020年第9期7-10,共4页Foreign Electronic Measurement Technology

基　　金：广西科技基地和人才专项(桂科AD17129065)、广西科技基地和人才专项(桂科AD17195041);横向科研项目(33300000-19-QT0601-0004)资助。

摘　　要：风速表探头安装在环形风洞试验段流场均匀区内,会改变风速流场和分布,其产生的阻塞效应会影响检测结果。为减少风速表探头(包括安装支架等)阻塞效应的影响,以GM8901叶轮式风速表为研究对象,提出了将环形风洞次试验段风速表示值与主试验段风速表示值进行比对得出阻塞修正系数的方法。经国家气象计量站大风洞检测数据验证,该阻塞修正方法合理且有效,具有较好的实用价值。The anemometer probe is installed in the uniform flow field of the test section of the annular wind tunnel,will change the flow field and distribution of wind speed,and the blocking effect will affect the detection results.In order to reduce the blocking effect of anemometer probe(including mounting bracket,etc.),the GM8901 vane wheel anemometer was studied and a method to obtain the blocking correction coefficient by comparing the wind speed values of the secondary test section with those of the main test section of the annular wind tunnel was proposed.The experimental results of big wind tunnel by national meteorological metrology station show that the blocking correction method is reasonable and effective,and has good practical value.

关 键 词：风速表 阻塞效应 修正方法 环形风洞 阻塞比 

分 类 号：TH815[机械工程—仪器科学与技术]