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Pipes Conveying Vertical Slug Flow
2020In this chapter, a fluid-structural model for analyzing the dynamic behavior of riser vibration subjected to simultaneous internal gas–liquid two-phase flow and external marine current is proposed. Slug flow regime is considered as it causes most violent vibrations.
Chen An +3 more
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Review on vertical gas–liquid slug flow
International Journal of Multiphase Flow, 2016Abstract Vertical slug flow is characterized by the rise of long bullet-shaped gas bubbles with a diameter almost matching that of the tube - Taylor bubbles. Liquid slugs separate consecutive Taylor bubbles, which may interact and coalesce if the distance between them is small.
A. O. Morgado +3 more
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Slug flow in curved microreactors: Hydrodynamic study
Chemical Engineering Science, 2007Abstract The need for eco-friendly and energy saving processes which are substantially compact and give higher efficiency has led to the concept of process intensification (PI). Curved microchannel is such innovative device, which has potential for the intensification of processes currently carried out in conventional straight or T-type microchannels.
Kumar, V. +3 more
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2021
Une meilleure prédiction de la perte de charge et de la quantité de liquide dans les modèlesvisant à caractériser les écoulements de type poches-bouchons nécessite une étude appro-fondie du mouvement et de l’hydrodynamique des poches de gaz allongées se trouvanten conduite. La région à phases séparées, i.e. celle de la poche de gaz, est essentielledans
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Une meilleure prédiction de la perte de charge et de la quantité de liquide dans les modèlesvisant à caractériser les écoulements de type poches-bouchons nécessite une étude appro-fondie du mouvement et de l’hydrodynamique des poches de gaz allongées se trouvanten conduite. La région à phases séparées, i.e. celle de la poche de gaz, est essentielledans
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Investigation of flow structures in vertical slug flow
Nuclear Engineering and Design, 1997Abstract The flow structure of gas–liquid slug flow in a vertical tube has been investigated experimentally and numerically. A photochromic dye activation method was used to obtain two-dimensional liquid velocity profiles around a Taylor Bubble rising in stagnant kerosene in a vertical 25.6 mm I.D. pipe.
M. Kawaji, J.M. DeJesus, G. Tudose
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BUBBLY-TO-SLUG TRANSITION IN VERTICAL FLOWS
Multiphase Science and Technology, 2003Alternative mechanisms for the bubble-to-slug transition in vertical flows are discussed. Linking the transition to void wave formation has tended to replace earlier hypotheses of bubble coalescence but neither is consistent with all the observations. Thus, several fundamental questions remain.
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2003
This chapter describes gas-liquid slug flow (also known as intermittent flow). Conservation equations are derived based on the assumptions of the unit cell model. The main results concerning the motion of long bubbles and liquid slugs are reviewed.
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This chapter describes gas-liquid slug flow (also known as intermittent flow). Conservation equations are derived based on the assumptions of the unit cell model. The main results concerning the motion of long bubbles and liquid slugs are reviewed.
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Prediction of slug frequency in horizontal two‐phase slug flow
AIChE Journal, 1990AbstractAvailable 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 conduits.
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Chemical Engineering Communications, 1996
Abstract A novel approach to modelling transient slug flow is presented. Aspects of current physical descriptions of slug flow, required as closure laws for the models are briefly reviewed. It is demonstrated how the dynamics of large scale changes in slug flow may be simulated, by incorporating a unit cell type of slug flow model into numerical ...
KJELL H. BENDIKSEN +2 more
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Abstract A novel approach to modelling transient slug flow is presented. Aspects of current physical descriptions of slug flow, required as closure laws for the models are briefly reviewed. It is demonstrated how the dynamics of large scale changes in slug flow may be simulated, by incorporating a unit cell type of slug flow model into numerical ...
KJELL H. BENDIKSEN +2 more
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Offshore Technology Conference, 2013
Abstract This paper expands on the work described in OTC 22935 (Slug Flow Induced Vibration in a Pipeline Span, a Jumper, and a Riser Section [1]). Different boundary conditions of the pipeline span, flow rates, slug lengths, and slug frequencies are investigated for slug flow induced vibration of the pipeline span ...
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Abstract This paper expands on the work described in OTC 22935 (Slug Flow Induced Vibration in a Pipeline Span, a Jumper, and a Riser Section [1]). Different boundary conditions of the pipeline span, flow rates, slug lengths, and slug frequencies are investigated for slug flow induced vibration of the pipeline span ...
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