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

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Abstract

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.

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Authors and Affiliations

  1. Stanford University, Department of Mechanical Engineering Building 500, Stanford, CA 94305-3030, USA, , , , , , US

    D. B. DeGraaff & J. K. Eaton

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  1. D. B. DeGraaff
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  2. J. K. Eaton
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Received: 27 June 1999/Accepted: 30 August 2000

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DeGraaff, D., Eaton, J. A high-resolution laser Doppler anemometer: design, qualification, and uncertainty. Experiments in Fluids 30, 522–530 (2001). https://doi.org/10.1007/s003480000231

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  • DOI: https://doi.org/10.1007/s003480000231

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