Hydraulic Turbine Vortex detection and visualization using Strain Gauge Sensor

Abstract : —Hydraulic machinery monitoring using non-intrusive sensors is today's trend in the hydroelectric power industry. The phenomena of cavitation vortex occurs mostly at off-design regimes, which reduces the turbine's efficiency. In this paper we propose a mathematical model for vortex detection and a 3D vortex presence visualization. Its visualization is constructed on the gyroscope principle, translating the strain gauge vertical elongations into a nutation movement. The mathematical model for vortex detection computes the data statistical moments. The model is tested on experimental data recorded using an extensometer.
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Irina Murgan, Gabriel Vasile, Cornel Ioana, Stéphane Barre, Thierry Lora-Ronco. Hydraulic Turbine Vortex detection and visualization using Strain Gauge Sensor. IEEE Sensors Letters, IEEE, 2017, 1 (5), pp.1 - 1. ⟨10.1109/LSENS.2017.2750402⟩. ⟨hal-01592678v2⟩

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