检索结果-南通市图书馆

第24届中国控制与决策会议

作者： WU Hao, TAN Chao, DONG Feng Tianjin Key Laboratory of Process Measurement and Control, School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, China

multiphase flow phenomena are widespread in nature and production process. The study of the flow mechanism and characteristics are a very important in the multiphase pipe flow. The establishment of multiphase flow experimental devices and systems is necessary in the study. In order to multi-phase pipe flow simulation, the small-scale physical experimental system based on the PLC control, and the experimental simulation system of based on Configuration software design are achieved. The physical experimental system can be achieved signals acquisition and control. Bubble flow, stratified flow, wavy flow, slug flow and other flow patterns can be formed in the experimental pipeline by changing the oil-gas-water flow rate. The virtual experimental system consists of the control interface and virtual physical interface. The simulation experiments of the multiphase flow generation can be achieved through the data exchange by two computers. This system meets the requirements for multiphase flow experiment.

关键词： multiphase pipe flow Experimental System Virtual PLC Configuration

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A unified fractional flow framework for predicting the liquid holdup in two-phase pipe flows

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Petroleum Science 2024年第4期21卷 2614-2624页

作者： Fuqiao Bai Yingda Lu Mukul M.Sharma Hildebrand Department of Petroleum and Geosystems Engineering The University of Texas at Austin200 E.Dean KeatonAustinTX78712USA

Two-phase pipe flow occurs frequently in oil&gas industry,nuclear power plants,and *** calculations of gas void fraction(or liquid holdup)play a central role in two-phase pipe flow *** this paper we apply the fractional flow theory to multiphase flow in pipes and present a unified modeling framework for predicting the fluid phase volume fractions over a broad range of pipe flow *** to existing methods and correlations,this new framework provides a simple,approximate,and efficient way to estimate the phase volume fraction in two-phase pipe flow without invoking flow ***,existing correlations for estimating phase volume fraction can be transformed and expressed under this modeling *** fractional flow models are applicable to different flow conditions,and they demonstrate good agreement against experimental data within 5%errors when compared with an experimental database comprising of 2754 data groups from 14literature sources,covering various pipe geometries,flow patterns,fluid properties and flow *** gas void fraction predicted by the framework developed in this work can be used as inputs to reliably model the hydraulic and thermal behaviors of two-phase pipe flows.

关键词： pipe fractional flow Liquid holdup multiphase pipe flow Gas void fraction

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