A high-resolution laser Doppler anemometer: design, qualification, and uncertainty

被引:0
|
作者
D. B. DeGraaff
J. K. Eaton
机构
[1] Stanford University,
[2] Department of Mechanical Engineering Building 500,undefined
[3] Stanford,undefined
[4] CA 94305-3030,undefined
[5] USA,undefined
来源
Experiments in Fluids | 2001年 / 30卷
关键词
Reynolds Number; Experimental Method; Wind Tunnel; Measurement Volume; Reynolds Stress;
D O I
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中图分类号
学科分类号
摘要
A new high-resolution laser Doppler anemometer (LDA) has been developed with a working distance of 350 mm, allowing operation in lab-scale wind tunnels. The measurement volume size is 35 μm in diameter by 60 μm in length, allowing resolution of the smallest turbulence scales even at fairly high Reynolds numbers. The controversial question of velocity and validation bias in LDA data is resolved with an experimental method for measuring and removing those effects. Uncertainty estimates are also derived for all the mean and Reynolds stress measurements.
引用
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页码:522 / 530
页数:8
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