Evolution of High-Viscosity Gas–Liquid Flows as Viewed Through a Detrended Fluctuation Characterization

Processes

J. Hernández¹  L. Torres¹  A. Palacio-Pérez¹  J.E. V. Guzmán¹  A. Rodríguez-Valdés¹  D.F. Galaviz¹ 

[1] Instituto de Ingeniería, Universidad Nacional Autónoma de México, Mexico City 04510, Mexico;

关键词: high-viscosity;    two-phase flow;    detrended fluctuation analysis;    heavy oils;   

DOI  :  10.3390/pr7110822

来源: DOAJ

【 摘 要 】

We characterize the long-term development of high-viscosity gas−liquid intermittent flows by means of a detrended fluctuation analysis (DFA). To this end, the pressures measured at different locations along an ad hoc experimental flow line are compared. We then analyze the relevant time-series to determine the evolution of the various kinds of intermittent flow patterns associated with the mixtures under consideration. Although no pattern transitions are observed in the presence of high-viscosity mixtures, we show that the dynamical attributes of each kind of intermittence evolves from one point to another within the transport system. The analysis indicates that the loss of a long-range correlation between the pressure responses are due to the discharge processes.

【 授权许可】

Unknown