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Ultrasonic velocity profiler placement for flow over cylinder based on determinant greedy line selection method

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Abstract

Ultrasonic Velocity Profiler (UVP) provides velocity measurement along a line and is also applicable to flow fields which are optically inaccessible. The capability of UVP was extended from line measurement of velocity to pressure measurement in fluid flows (Tiwari and Murai in Exp Fluids 62:1–17, 2021). However, the position of UVP transducer was chosen rather arbitrarily, and no study has yet been conducted for the optimization of the location of UVP transducer in two-dimensional flows. In this study, a novel determinant greedy line selection method (DGLSM) is developed for the selection of the position of the ultrasonic transducer for effective measurement from UVP in two-dimensional fluid flows. The concept of line selection algorithm is motivated from sensor selection method (Manohar in IEEE Control Syst 38: 63–86, 2018; Saito et al in IEEE Access 9: 68535–68551, 2021). The present DGLSM algorithm provides the optimized lines for velocity measurement by UVP. The number of UVP lines and locations were optimized by analyzing their flow reconstruction capability. The demonstration of algorithm is performed in experimental velocity data of flow over cylinder. It was found that when the number of measurement lines becomes equal to the number of Proper Orthogonal Decomposition modes, the reconstruction accuracy becomes excellent.

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Acknowledgements

This work was financially supported by Science and Engineering Research Board with Sanction Order No. RJF/2021/000118 (SER-1839-MID) under Ramanujan fellowship.

Funding

This work was financially supported by Science and Engineering Research Board with Sanction Order No. RJF/2021/000118 (SER-1839-MID) under Ramanujan fellowship. The authors declare that the funding bodies have no role in the design of the study and collection, analysis, and interpretation of data and in writing the manuscript.

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NT: Conceptualization, Supervision, Methodology, Experiments, Software, Investigation, Writing—original draft, Visualization, Data curation, Writing—review & editing. Funding acquisition.

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Correspondence to Neetu Tiwari.

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Tiwari, N. Ultrasonic velocity profiler placement for flow over cylinder based on determinant greedy line selection method. Exp Fluids 64, 119 (2023). https://doi.org/10.1007/s00348-023-03661-4

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  • DOI: https://doi.org/10.1007/s00348-023-03661-4

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