A mechanistic model to predict pressure drop and holdup pertinent to horizontal gas-liquid-liquid intermittent flow
| Autor: | P. Babakhani Dehkordi, Luigi Pietro Maria Colombo, A. Shahrabadi, Amin Azdarpour, Erfan Mohammadian |
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| Rok vydání: | 2019 |
| Předmět: |
Pressure drop
Water flow General Chemical Engineering 02 engineering and technology General Chemistry Mechanics Slug flow 01 natural sciences 010305 fluids & plasmas Physics::Fluid Dynamics Liquid-liquid-gas flow Mechanistic model Phase holdup Flow conditions 020401 chemical engineering Three-phase Continuity equation 0103 physical sciences Environmental science Duct (flow) 0204 chemical engineering Literature survey |
| Zdroj: | Chemical Engineering Research and Design. 149:182-194 |
| ISSN: | 0263-8762 |
| Popis: | In this work a mechanistic model is proposed to predict pressure drop and phase holdup for viscous oil-water-gas flows within horizontal duct. The model is suitable for three phase intermittent (slug) flows where oil and water phases are fully mixed. However, validation is also made for slug flow with core-annular oil and water flow. This approach makes use of a correlation for total slug unit length developed by Babakhani Dehkordi (2017) as an input in the model so that the continuity equation is explicitly solved, reducing complexity of the present models in the literature survey. Furthermore, oil and water are assumed to have a homogeneous behavior to simplify three-phase flow equations. The model predictions are compared with experimental data of viscous oil-water-gas slug flows. Results revealed that inclusion of slug unit data together with assumption of homogeneous flow for oil and water in mechanistic model improved prediction of pressure drop over the range of investigated flow conditions. |
| Databáze: | OpenAIRE |
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