Abstract
In this paper the bias phenomenon in the evaluation of PIV recordings by using the correlation-based interrogation algorithm is discussed, and a digital mask technique, that can effectively reduce the bias error, is introduced. The correlation-based interrogation algorithm, when masked with a Gaussian window function, can achieve a higher evaluation accuracy not only for PIV recordings of flows with small velocity gradients, but also for that of flows with large gradients.
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Received: 14 October 1998/Accepted: 20 July 1999
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Gui, L., Merzkirch, W. & Fei, R. A digital mask technique for reducing the bias error of the correlation-based PIV interrogation algorithm. Experiments in Fluids 29, 30–35 (2000). https://doi.org/10.1007/s003480050423
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DOI: https://doi.org/10.1007/s003480050423