Performance studies on cavitation-resistance turbine flow sensor based on experiment and CFD simulation. (June 2021)

• Record Type: Journal Article
• Authors: Chen, Yong; Ding, Wenzheng; Bian, Rong
• Is Part Of: Flow measurement and instrumentation. Volume 79(2021)
• Publication Date: 2021-06
• Subjects: Turbine flow sensor -- Flow measurement -- Cavitation -- CFD simulation -- Cavitation tunnel experiment; Fluid dynamic measurements -- Periodicals; Flow meters -- Periodicals; Fluides, Dynamique des -- Mesure -- Périodiques; Débitmètres -- Périodiques; 681.2805
• DOI: 10.1016/j.flowmeasinst.2021.101918
• Languages: English
• ISSNs: 0955-5986

Abstract

Abstract: Under the technical requirements of expanding measurement range and suppressing cavitation of flow sensors, the performance of a novel cavitation-resistance turbine flow sensor is taken as the research objective in this article. Based on theoretical analysis, a three-dimensional flow field CFD model of the turbine flow sensor with Realizable k-ε turbulence model and Schnerr&Sauer cavitation model is established. The cavitation tunnel experiment is performed to obtain the sensor characteristics. Finally, simulation and experiment results is analyzed and the feasibility of the CFD simulation of the sensor flow field is proved. The results show that this novel turbine flow sensor has the ability to resist cavitation, and the critical cavitation number σcr of the turbine flow sensor is below 0.4. Under a wide range of cavitation number (0.33~ σ ~1.6), Reynolds number(5 × 10 4 ~ Re ~8 × 10 5 )and inflow angle α(−5°~ α~ 5°), the measurement meets the requirements. Highlights: A novel cavitation-resistance turbine flow sensor is introduced and taken as the research objects. The CFD simulation is established to simulate the dynamic flow angle and high-speed rotating turbine under cavitation. Under cavitation, the sensor linearity of measure curve is high as measuring inflow velocity range is 5m/s~ 10m/s. The novel turbine flow sensor has the ability to resist cavitation as cavitation number σ ≥ 0.4.