Momentum interaction in buoyancy-driven gas–liquid vertical channel flows
| Autor: | L. F. Echeverri, Sumanta Acharya, P. W. Rein |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Fluid Flow and Transfer Processes
Physics Vertical channel Drag coefficient Void (astronomy) Buoyancy Mechanical Engineering Thermodynamics Mechanics engineering.material Condensed Matter Physics Physics::Fluid Dynamics Drag Parasitic drag engineering Liquid circulation Physics::Atmospheric and Oceanic Physics |
| Zdroj: | International Journal of Heat and Mass Transfer. 53:2284-2293 |
| ISSN: | 0017-9310 |
| DOI: | 10.1016/j.ijheatmasstransfer.2009.11.020 |
| Popis: | Drag coefficient correlations for bubbles in buoyancy-driven two-phase flows have generally been derived from data on low-viscosity media and within the bubbly flow regime. In a number of applications, e.g. evaporative crystallizers, there is a need to extend this correlation to higher viscosity flows and slug regimes. In this paper, the momentum interaction in gas–liquid vertical channel flow has been studied experimentally over a wide range of void fractions using a circulation loop facility where the buoyancy is the only driving force for liquid circulation. A model for the drag in gas–liquid buoyant flows has been developed, and is applicable for a wide range of viscosity and void fractions. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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