摘要
目的改进探头结构研究热球式风速探头低压下测量 0 .1～ 1 .5m/s低风速的方法。方法通过理论推导和实验结合方法 ,考虑到绝对压力 ( 1 .0～ 0 .5atm)和温度因素 ,得到有压力和温度修正的公式。结果标定拟合得到探头风速与信号关系的计算公式 ,测量结果理想。结论热球探头体积小、价格低 ,适于低压下的低风速测量 ,可以清晰绘制出流场的等值线图。
Objective To develop a method for measuring low air velocity of 0.1～1.5 m/s by improving the structure of the hot-bulb probe. Method A correlation was obtained by combining theoretical derivation and experiments under different temperatures and reduced pressures (1.0～0.5 atm) . Result A satisfactory correlation for the improved probe was obtained. Conclusion Hot-bulb probe is small, cheap and suitable for measuring low air velocity and mapping the flow contours under reduced pressure.
出处
《航天医学与医学工程》
CAS
CSCD
北大核心
2003年第6期443-447,共5页
Space Medicine & Medical Engineering
关键词
风速测量
热球
压力修正
温度修正
anemometry
hot-bulb
pressure correction
temperature correction
