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An experimental study on the effect of gas injection configuration on flow characteristics in high viscosity oil columns (2021)
Journal Article
Mohammed, S. K., Hasan, A. H., Ibrahim, A., & Dimitrakis, G. (2021). An experimental study on the effect of gas injection configuration on flow characteristics in high viscosity oil columns. Canadian Journal of Chemical Engineering, 100(10), 3015-3029. https://doi.org/10.1002/cjce.24312

Gas-viscous liquid bubbly and slug flow are very common in petroleum, chemical, bioengineering, polymer, and food processing. However, there is a major knowledge gap in two-phase flow research in the design of gas injectors/distributers in very high... Read More about An experimental study on the effect of gas injection configuration on flow characteristics in high viscosity oil columns.

Dynamics of flow transitions from bubbly to churn flow in high viscosity oils and large diameter columns (2019)
Journal Article
Mohammed, S. K., Hasan, A. H., Ibrahim, A., Dimitrakis, G., & Azzopardi, B. J. (2019). Dynamics of flow transitions from bubbly to churn flow in high viscosity oils and large diameter columns. International Journal of Multiphase Flow, 120, https://doi.org/10.1016/j.ijmultiphaseflow.2019.103095

The dynamic behaviour of the gas-liquid two phase flows and in particular the flow pattern stability and transition between the flow regimes are influenced significantly by both the properties of the liquid and gas as well as the pipe diameter. The m... Read More about Dynamics of flow transitions from bubbly to churn flow in high viscosity oils and large diameter columns.

Gas rising through a large diameter column of very viscous liquid: flow patterns and their dynamic characteristics (2019)
Journal Article
Hasan, A. H., Mohammed, S. K., Pioli, L., Hewakandamby, B. N., & Azzopardi, B. J. (2019). Gas rising through a large diameter column of very viscous liquid: flow patterns and their dynamic characteristics. International Journal of Multiphase Flow, 116, 1-14. https://doi.org/10.1016/j.ijmultiphaseflow.2019.04.001

Gas-liquid flows are affected strongly by both the liquid and gas properties and the pipe diameter, which control features and the stability of flow patterns and their transitions. For this reason, empirical models describing the flow dynamics can be... Read More about Gas rising through a large diameter column of very viscous liquid: flow patterns and their dynamic characteristics.

Churn flow in high viscosity oils and large diameter columns (2017)
Journal Article
Mohammed, S. K., Hasan, A., Dimitrakis, G., & Azzopardi, B. J. (2018). Churn flow in high viscosity oils and large diameter columns. International Journal of Multiphase Flow, 100, https://doi.org/10.1016/j.ijmultiphaseflow.2017.11.018

Churn flow is an important intermediate flow regimoccurring in between slug and annular flow patterns in two-phase flow, with profound implications in chemical and petroleum industry. The majority of studies to date in churn flow has been carried out... Read More about Churn flow in high viscosity oils and large diameter columns.