Slug flow is a highly complex type of flow with an unsteady nature. The prediction of pressure drop, heat, and mass transfer for such flow is often considered a difficult task. The chapter deals with steady slug flow. The chapter introduces several options of modeling the hydrodynamic ...
slug frequency, bubble and slug lengths in ducts with inclination angles from −4° down to −13° on experimental grounds. The analyses were performed at different gas-liquid volumetric flow rates for which the slug flow regime was observed. An existing experimental rig in the NUEM/UTFPR ...
Two-phase slug flow in inclined pipelines can cause significant practical operating problems. When slugs flow in an inclined pipeline that contains sections of different inclinations, they undergo a change of length and slug flow characteristics as the slug moves from section to section. In addition...
In this contribution, we present simulation results for two-phase slug flow in horizontal pipes, which have been investigated during the MutliFlowMet I project. The numerical predictions are validated by comparison with experimental data we have extracted from the raw video recordings at TÜV SÜD...
Moment equations for gas liquid bubbly two phase flow has been developed utilizing phase averaging and void weighted averaging. 利用相平均和含气率 α权重时间平均推导了气液两相泡状流的动量方程 ,分析了动量方程中的压力项 ,并对 T型管中的气液两相泡状流进行了数值模拟 ,确定其含气率和压力的分布规...
Quasi-3D Modelling of Two-Phase Slug Flow in Pipes. In this paper, we present progress obtained by the Quasi 3-Dimensional (Q3D) model for pipe flows. This model is based on a multi-fluid multi-field formula... S.,Ashrafian,A.,... - 《Journal of Computational Multiphase Flows》 被...
Finally we report the performance of the model for slug flow in horizontal and 10° inclined pipes. The model reproduces the experimental data satisfactorily for both cases in a very short simulation time compared to full 3D. 展开 关键词:...
Available data on slug frequency in horizontal two-phase intermittent flow are predicted with adequate accuracy by assuming that the slug frequency is one half of the frequency of the unstable waves precursors of slugs, as determined according to published analyses of finite amplitude waves in conduit...
Fluctuation analysis of slug velocities for two-phase slug flow in a horizontal pipe The fluctuation characteristics of slug velocities have been investigated on basis of fractional theory for air/water slug flow in horizontal pipe within a... LM He,QJ Zhao,ZY Chen - 《Proceedings of the Csee...
CFD Modeling of Two-Phase Boiling Flows in the Slug Flow Regime with an Interface Capturing Technique The first and biggest acknowledgment is for my supervisor Dr. Beatrice Pulvirenti, who gave me the opportunity to begin this doctoral course. La Bea has been my supervisor since my graduation th...