Eventos Anais de eventos
ENCIT 2022
19th Brazilian Congress of Thermal Sciences and Engineering
Experimental study on low-frequency sound propagation in dispersed water-air pipe flow
Submission Author:
Johann Eduardo Castro Bolivar , SP , Brazil
Co-Authors:
Johann Eduardo Castro Bolivar, MARLON MAURICIO HERNANDEZ CELY, Oscar Mauricio Hernandez Rodriguez
Presenter: Johann Eduardo Castro Bolivar
doi://10.26678/ABCM.ENCIT2022.CIT22-0715
Abstract
The acoustic properties of two-phase flow are a topic of interest in gas transportation in the petroleum industry. A low-frequency acoustic sound wave is used to determine the speed of sound and single-phase air velocity in pipe flow. However, those cannot be obtained using classical methods of signal processing (coherence and cross spectrum) due to the high noise produced by turbulent flow and the pumping equipment. Therefore, cross correlation and a time-frequency analysis are promising to determine the time delay between acoustic signals captured experimentally for a four microphone array, hence, determining the sound speed and flow velocity. Later, based on this information, relevant quantities related to of water dispersed-air flow are measured and the effect of the liquid volumetric fraction on sound speed and signal attenuation are investigated. The goal is to deliver a robust experimental methodology for multiphase flow metering.
Keywords
Acoustic waves, Dispersed flow, water-air flow, sound propagation, Signal Analysis
