Identification of two-phase flow regimes in horizontal, inclined and vertical pipes

Abstract

Identification of two-phase flow regimes is required in many industrial processes; however, it is difficult to perform this objectively. This paper introduces the TERT-II prototype developed in Tianjin University and the process by which we applied it to identify flow regimes of air/water and oil/water flows in horizontal, inclined and vertical pipes. The corresponding software package of this system was developed under the Windows 95/98 platform. It included data acquisition, data processing, image reconstruction and identification of flow regimes. The air/water and oil/water experiments were carried out with different experimental set-ups.It is shown that identification of flow regimes and estimates of some parameters of two-phase flow are possible through image reconstruction, data analysis and processing, and a set of criteria is specially presented to identify flow regimes in horizontal pipes.

Application of D-S evidence theory in flow regime identification of two-phase horizontal pipe flow

“…1 S and 2 S represents the i R series acquired from plane A and plane B. A data fusion result 3 S is obtained by formula (3):…”

“…ERT technique can provide more information than the conventional single point sensor, such as two/three dimensional information. ERT can be widely used in the measurement of multi-phase flow parameters include the flow regime recognition [3] . In the recent years, multi-sensor fusion has received significant attention for both military and non-military applications.…”

Effect of gap and flow orientation on two-phase flow in an oil-wet gap: Relative permeability curves and flow structures

“…viscosity and density, of the phases themselves. Two-phase pipe flows has been well studied (Oddie et al, 2003;Dong et al, 2001;Polonsky et al, 1999;Mishima and Hibiki, 1996;Wilmarth and Ishii, 1997;Mishima et al, 1993 andTroniewski andUlbrich, 1984). The relative flow rates of the phases are not only given by the phase properties but also by the nature of the multiphase flow structure.…”

Annular field-focusing capacitance sensor for visualization of the two phase flows

“…They are characterized by the simultaneous flow along a pipe of a combination of two phases such as gas-water, oil-water and liquid-solid, which remain separate from each other [1]. The study of two-phase flows is not only for their scientific and fundamental interest, but also because it is significant for the efficiency and safety of industrial processes.…”