Research Repository

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Fluid structure behaviour in gas-oil two-phase flow in a moderately large diameter vertical pipe (2018)
Journal Article
Omar, R. A., Hewakandamby, B. N., Azzi, A., & Azzopardi, B. J. (2018). Fluid structure behaviour in gas-oil two-phase flow in a moderately large diameter vertical pipe. Chemical Engineering Science, 187, doi:10.1016/j.ces.2018.04.075. ISSN 0009-2509

Intermittent flows in vertical pipes occur in many industrial settings including power generation and downstream oil-and gas production. This type of flows include cap bubble, slug and churn flow regimes. These regimes are of interest as downstream p... Read More

Numerical studies of shear-thinning droplet formation in a microfluidic T-junction using two-phase level-set method (2017)
Journal Article
Wong, V. L., Loizou, K., Lau, P., Graham, R. S., & Hewakandamby, B. N. (2017). Numerical studies of shear-thinning droplet formation in a microfluidic T-junction using two-phase level-set method. Chemical Engineering Science, 174, doi:10.1016/j.ces.2017.08.027. ISSN 0009-2509

A conservative level-set method (LSM) embedded in a computational fluid dynamics (CFD) simulation provides a useful approach for the studying the physics and underlying mechanism in two-phase flow. Detailed two-dimensional (2D) computational microflu... Read More

Characterisation of an analogue liquid for hydrodynamic studies of gas-ionic liquid flows (2017)
Journal Article
Azzopardi, B. J., Agunlejika, E. O., Zhao, D., Kaji, R., & Hewakandamby, B. N. (2017). Characterisation of an analogue liquid for hydrodynamic studies of gas-ionic liquid flows. Chemical Engineering Journal, 330, doi:10.1016/j.cej.2017.07.090. ISSN 1385-8947

Ionic liquids are liquid salts at low temperatures (normally less than 100°C). They are powerful solvents with very low vapour pressure. They have great potentials in many applications such as gas absorption and chemical synthesis. However, they are... Read More

Study of the impacts of droplets deposited from the gas core onto a gas-sheared liquid film (2016)
Journal Article
Cherdantsev, A. V., Hann, D. B., Hewakandamby, B. N., & Azzopardi, B. J. (in press). Study of the impacts of droplets deposited from the gas core onto a gas-sheared liquid film. International Journal of Multiphase Flow, 88, doi:10.1016/j.ijmultiphaseflow.2016.09.015. ISSN 0301-9322

The results of an experimental study on droplet impactions in the flow of a gas-sheared liquid film are presented. In contrast to most similar studies, the impacting droplets were entrained from film surface by the gas stream. The measurements provid... Read More

The control and maintenance of desired flow patterns in bends of different orientations (2016)
Journal Article
Zhao, D., Omar, R., Abdulkadir, M., Abdulkareem, L. A., Azzi, A., Saidj, F., …Azzopardi, B. J. (in press). The control and maintenance of desired flow patterns in bends of different orientations. Flow Measurement and Instrumentation, 53(B), doi:10.1016/j.flowmeasinst.2016.09.003. ISSN 0955-5986

Multiphase flows are common in industrial settings and bends in pipe lines cannot be avoided due to space limitations. Gas-liquid two phase flows could form material discontinuities that could have adverse effect on productivity and the pipe network... Read More

Subatmospheric boiling study of the operation of a horizontal thermosyphon reboiler loop: Instability (2016)
Journal Article
Agunlejika, E. O., Langston, P. A., Azzopardi, B. J., & Hewakandamby, B. N. (in press). Subatmospheric boiling study of the operation of a horizontal thermosyphon reboiler loop: Instability. Applied Thermal Engineering, 109(A), doi:10.1016/j.applthermaleng.2016.08.135. ISSN 1359-4311

Distillation and chemical processing under vacuum is of immense interest to petroleum and chemical industries due to lower energy costs and improved safety. To tap into these benefits, energy efficient reboilers with lower maintenance costs are requi... Read More

Flow instabilities in a horizontal thermosyphon reboiler loop (2016)
Journal Article
Agunlejika, E. O., Langston, P., Azzopardi, B. J., & Hewakandamby, B. N. (2016). Flow instabilities in a horizontal thermosyphon reboiler loop. Experimental Thermal and Fluid Science, 78, doi:10.1016/j.expthermflusci.2016.05.013. ISSN 0894-1777

Thermosyphon systems have been the subject of several studies due to instability issues negating their attractive high heat fluxes, low temperature gradients requirement, reduced weight and simple, pump-less system. There is a dearth of design data f... Read More

Electrocoalescence of water drop trains in oil under constant and pulsatile electric fields (2015)
Journal Article
Vivacqua, V., Mhatre, S., Ghadiri, M., Abdullah, A., Hassanpour, A., Al-Marri, M., …Kermani, B. (2015). Electrocoalescence of water drop trains in oil under constant and pulsatile electric fields. Chemical Engineering Research and Design, 104, doi:10.1016/j.cherd.2015.10.006. ISSN 0263-8762

This study addresses the effectiveness of constant and pulsed DC fields in promoting coalescence of dispersed water drops in an oil-continuous phase. For this purpose, a train of drops of relatively uniform size is injected into a stream of flowing s... Read More

Interrogating the effect of an orifice on the upward two-phase gas–liquid flow behavior (2015)
Journal Article
Zeghloul, A., Azzi, A., Saidj, F., Azzopardi, B. J., & Hewakandamby, B. N. (2015). Interrogating the effect of an orifice on the upward two-phase gas–liquid flow behavior. International Journal of Multiphase Flow, 74, doi:10.1016/j.ijmultiphaseflow.2015.04.013. ISSN 0301-9322

Experiments are reported on an air–water mixture flowing through an orifice in a vertical pipe. Time series of cross-sectionally averaged void fractions have been measured at nine axial positions by using a conductance probe technique. A series of si... Read More

Electrostatic phase separation: a review (2015)
Journal Article
Mhatre, S., Vivacqua, V., Ghadiri, M., Abdullah, A., Al-Marri, M., Hassanpour, A., …Kermani, B. (2015). Electrostatic phase separation: a review. Chemical Engineering Research and Design, 96, doi:10.1016/j.cherd.2015.02.012. ISSN 0263-8762

The current understanding and developments in the electrostatic phase separation are reviewed. The literature covers predominantly two immiscible and inter-dispersed liquids following the last review on the topic some 15 years. Electrocoalescence kin... Read More

A study of droplet impact on static films using the BB-LIF technique
Journal Article
Hann, D. B., Cherdantsev, A. V., Mitchell, A., McCarthy, I., Hewakandamby, B. N., & Simmons, K. A study of droplet impact on static films using the BB-LIF technique. Experiments in Fluids, ISSN 0723-4864

This paper presents results of single droplet impacts on films of different height taken using the Brightness Based Laser Induced Fluorescence technique (BB-LIF). The dynamics of drop impingement such as the shape of the cavity, residual film thickne... Read More