Experimental tomographic methods for analysing flow dynamics of gas-oil-water flows in horizontal pipeline

Abstract

Gas-oil-water three phase flow is of practical significance in oil and gas industries. An insight into the dynamics of such multiphase flows is significantly valuable to obtain optimal design parameters and operational conditions. Since flow patterns are sensitive to pipe geometry, flow conditions and thermophysicalfluid properties, it is extremely challenging to provide a universal solution for visualisation of three phase horizontal flows. This study deals with a fully developed turbulent three phase flow with no phase changing, and presents the outcomes of tomographic imaging techniques to visualise gas-oil-water flows in a horizontal pipeline.

Transcendental p-adic continued fractions

“…In the same year, Ruban [9] also gave an different algorithm of p-adic continued fraction expansion. Ubolsri, Laohakosol, Deze, and Wang gave several transcendence criteria for Ruban continued fractions (see [5,3,14,15]). The proofs are mainly based on the theory of p-adic Diophantine approximations.…”

“…Applying (14), (15), (16), and (17), we have for all sufficiently large i ∈ Λ, P λ i < c 5 c i 6 P (2χ−1)(λ i−1 +λ i−2 +···+λ N ) .…”

Novel Identifier of Transitions in Bubble Columns Operated with Water and Aqueous Alcohol Solutions

“…The electrodes are connected to a v5r data acquisition system manufactured by ITS. The system can be also found in the literature for measurements in various multiphase FRs [27,28].…”

Impact Analysis of Slope on the Head Loss of Gas-Liquid Two-Phase Flow in Siphon Pipe

“…Schmidt et al proposed a method for measuring gas and liquid flow by observing a variety of gas-liquid two-phase flow patterns in v-shaped taper pipes [17,18]. Pietrzak et al measured the pressure drop of gas-liquid three-phase flow in pipes, and proposed a new model to predict the pressure drop of three-phase flow [19][20][21]. Barnea et al studied gas-liquid two-phase flow pattern transitions and drew a flow pattern map in horizontal and inclined pipes [22][23][24][25].…”