Research on the inherent error of ultrasonic flowmeter in non-ideal hydrogen flow fields

• Published in: International journal of hydrogen energy Vol. 39; no. 11; pp. 6104 - 6110
• Main Authors: Chen, Qiang, Wu, Jiangtao
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 04.04.2014; Elsevier
• Subjects: Acoustics; Alternative fuels. Production and utilization; Applied sciences; Computational fluid dynamics; Computer simulation; Energy; Error analysis; Errors; Exact sciences and technology; Flow rate; Flowmeters; Fuels; Hydrogen; Hydrogen-based energy; Inherent error; Integration; Non-ideal flow; Ultrasonic flowmeter; Integration; Inherent error; Hydrogen; Ultrasonic flowmeter; Non-ideal flow; Flow field
• ISSN: 0360-3199; 1879-3487
• DOI: 10.1016/j.ijhydene.2014.01.137

For the widespread transmission, custody and utilization for hydrogen energy, accurate flow rate measurement is the precondition. The ultrasonic flowmeter has a prospect of wide application for the hydrogen flow measurement. To improve the measurement accuracy, this article researched the inherent error of the ultrasonic flowmeter in the non-ideal hydrogen gas flow. Computational fluid dynamics (CFD) had been used to simulate hydrogen flows downstream of the single right bend and an orifice plate at different Reynolds numbers. Based on the simulation results, this work investigated the inherent error of the ultrasonic flowmeter with different integrations and acoustic paths. The results show the errors become larger when the flowmeter position is closer to the disturbance sources. The increase in the number of acoustic paths can effectively reduce the error caused by the non-ideal flow. In the flow field downstream of the bend, the flowmeters adopting Tailored and Owics integration perform better than those with other integrations. Tchebychev and Owics integration cause less error in the front 4D (four times diameter) pipe downstream of the orifice plate, while Tailored and Owics cause less error in the rear 11D area. •Two typical non-ideal hydrogen flows were calculated by CFD method.•The simulation results had been verified by comparisons with experiments.•The inherent errors of ultrasonic flowmeters with four integrations were studied.