Void Fraction Measurement in a Gas-Liquid Swirling Flow Using an Ultrasonic Sensor

IEEE Access

Marco Jose Da Silva¹  Cesar Yutaka Ofuchi¹  Flavio Neves¹  Henrique Krainer Eidt²  Rigoberto E. M. Morales²  Dalton Bertoldi² 

[1] Graduate Program in Electrical and Computer Engineering (CPGEI), Federal University of Technology-Parana, Curitiba, Brazil;Multiphase Flow Research Center (NUEM), Federal University of Technology-Parana, Curitiba, Brazil;

关键词: Swirling flow;    void fraction;    liquid film;    wire-mesh sensor;    ultrasound sensor;    two-phase flow;   

DOI  :  10.1109/ACCESS.2020.3033425

来源: DOAJ

【 摘 要 】

In this article, we propose a novel ultrasonic technique to measure the gas void fraction in a liquid-gas intermittent swirling flow. The method converts the liquid film thickness measurement to a gas void fraction value considering a symmetrical flow pattern. We propose the use of the first echo peak instead of the standard maximum echo peak to estimate the liquid film thickness. The results are compared with a wire-mesh sensor, a reference for gas void fraction measurement, in a 1-inch inner-diameter vertical flow loop. A Root-Mean-Square-Deviation (RMSD) of 2.87% was observed between the proposed ultrasonic method and the reference sensor. An improvement of 6.06% if compared to the standard film thickness method (8.93%). The studied cases show that our method improves the use of ultrasound for gas void fraction measurement in a gas-liquid swirling flow.

【 授权许可】

Unknown