Void fraction in vertical gas-liquid slug flow: Influence of liquid slug content
| Autor: | Alain Liné, Veronique Henriot, Sandrine Decarre, S. Guet |
|---|---|
| Přispěvatelé: | IFP Energies nouvelles (IFPEN), Institut de Biologie Intégrative de la Cellule (I2BC), Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay-Centre National de la Recherche Scientifique (CNRS), Laboratoire d'Ingénierie des Systèmes Biologiques et des Procédés (LISBP), Institut National de la Recherche Agronomique (INRA)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Institut National des Sciences Appliquées (INSA)-Université de Toulouse (UT)-Centre National de la Recherche Scientifique (CNRS), Institute for Integrative Biology of the Cell, Centre National de la Recherche Scientifique (CNRS)-Institut National des Sciences Appliquées - Toulouse (INSA Toulouse), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Institut National de la Recherche Agronomique (INRA) |
| Jazyk: | angličtina |
| Rok vydání: | 2006 |
| Předmět: |
[PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Mechanics of the fluids [physics.class-ph]
Chemistry Applied Mathematics General Chemical Engineering Bubble Flow (psychology) Multiphase flow Thermodynamics Fluid mechanics Fraction (chemistry) 02 engineering and technology General Chemistry Slug flow 01 natural sciences Industrial and Manufacturing Engineering 010305 fluids & plasmas Physics::Fluid Dynamics 020401 chemical engineering 0103 physical sciences [PHYS.MECA.MEFL]Physics [physics]/Mechanics [physics]/Fluid mechanics [physics.class-ph] 0204 chemical engineering Porosity Entrainment (chronobiology) |
| Zdroj: | Chemical Engineering Science Chemical Engineering Science, 2006, 61 (22), pp.7336-7350. ⟨10.1016/j.ces.2006.08.029⟩ Chemical Engineering Science, Elsevier, 2006, 61 (22), pp.7336-7350. ⟨10.1016/j.ces.2006.08.029⟩ |
| ISSN: | 0009-2509 |
| DOI: | 10.1016/j.ces.2006.08.029⟩ |
| Popis: | International audience; In this study we develop a model for computing the mean void fraction and the liquid slug void fraction in vertical upward gas–liquid intermittent flow. A new model for the rate of gas entrained from the Taylor bubble to the liquid slug is formulated. It uses the work done by the pressure force at the rear of the Taylor bubble. Then an iterative approach is employed for equating the gas entrainment flux and the gas flux obtained via conservation equations. Model predictions are compared with experimental data. The developed iterative method is found to provide reasonable quantitative predictions of the entrainment flux and of the void fraction at low and moderate liquid slug void fraction conditions. However, with an increased liquid slug void fraction experimental data indicate that the flow in the liquid slug transits to churn-heterogeneous bubbly flow thus gas entrainment flux tends to zero. Considering this effect in the iterative model significantly improved the predictions for large liquid slug void fraction conditions. |
| Databáze: | OpenAIRE |
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