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Title: Novel High Accuracy Delay Time Estimation Algorit Hm To Compute Vortex Convection Velocity
Author: Kaluri V. Ranga Rao A Venugopal A Yegneswaran
Source: 2015 International Symposium on Fluid Flow Measurement
Year Published: 2015
Abstract: Conventional vortex flowmeters suffers performance dete rioration at low Reynolds number ( Re D 30000) owing to piping vibrations and hydrodynamic n oise. Under these conditions the strength of the shed vortices is not sufficient enough to be captured by conventional frequency detection techniques. The present study employs a pair of piezoelectric sensors located downstream the bluff body to capture the convection of the shed vortices. The convection velocity of the shed vortices is computed using a novel de lay time estimation algorithm. Conventionally the delay time is estimated using correla tion methods.

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