Skip to main content

Research Repository

Advanced Search

Dr Abbas Hasan's Outputs (34)

Wind resource assessment and site selection of offshore wind farms in the state of Kuwait (2025)
Journal Article
Hasan, A. H., Umoh, K., Al-Qattan, A., Al-Awadi, L., Rajab, A., Adouane, M., & Gilbert, J. (2025). Wind resource assessment and site selection of offshore wind farms in the state of Kuwait. Energy Sources Part B: Economics, Planning and Policy, 20(1), Article 2507683. https://doi.org/10.1080/15567249.2025.2507683

Among several countries, Kuwait has made significant progress in transitioning to renewable energy. As a result, the onshore Shagaya renewable energy park was deployed in 2017 with a total capacity of 70 MW. To effectively progress in the development... Read More about Wind resource assessment and site selection of offshore wind farms in the state of Kuwait.

Combined AHP-GIS methodology for floating offshore wind site selection in South Africa (2024)
Journal Article
Umoh, K., Hasan, A., & Kenjegaliev, A. (2025). Combined AHP-GIS methodology for floating offshore wind site selection in South Africa. Ocean engineering, 317, Article 120037. https://doi.org/10.1016/j.oceaneng.2024.120037

A sustainable approach to site selection can enhance the techno-economic feasibility of floating wind projects. This is because site selection is a multicriteria problem including technical, environmental, social, and economic factors. The issue is m... Read More about Combined AHP-GIS methodology for floating offshore wind site selection in South Africa.

Assessment of the locational potential of floating offshore wind energy in South Africa (2024)
Journal Article
Umoh, K., Hasan, A., Kenjegaliev, A., & Al-Qattan, A. (2024). Assessment of the locational potential of floating offshore wind energy in South Africa. Sustainable Energy Research, 11, Article 12. https://doi.org/10.1186/s40807-024-00104-4

Expanding floating wind into new markets could support emission reduction targets in several national contexts. It furthers the need for adequate assessments to gain a full understanding of the technology’s potential in future markets. South Africa i... Read More about Assessment of the locational potential of floating offshore wind energy in South Africa.

Process design Optimisation, heat integration, and techno-economic analysis of oil refinery: A case study (2023)
Journal Article
Jabbar, K. J., Zein, S. H., Hasan, A. H., Ahmed, U., & Jalil, A. A. (2023). Process design Optimisation, heat integration, and techno-economic analysis of oil refinery: A case study. Energy Sources, Part A, 45(2), 4931-4947. https://doi.org/10.1080/15567036.2023.2205365

This paper outlines a comprehensive analysis of the optimal design and simulation of a crude oil distillation system within a refinery process, including pre-treatment and blending of two crude oils to increase the refinery’s annual profit. This dist... Read More about Process design Optimisation, heat integration, and techno-economic analysis of oil refinery: A case study.

Small bubbles formation and contribution to the overall gas holdup in large diameter columns of very high viscosity oil (2022)
Journal Article
Mohammed, S. K., Hasan, A. H., Dimitrakis, G., & Azzopardi, B. J. (2022). Small bubbles formation and contribution to the overall gas holdup in large diameter columns of very high viscosity oil. International journal of multiphase flow, 152, Article 104104. https://doi.org/10.1016/j.ijmultiphaseflow.2022.104104

A limited number of studies are available in literature on the small bubbles which create from gas-very high viscosity oils interaction and its contribution to the gas holdup in the system. The rate of small bubble formation has an important impact o... Read More about Small bubbles formation and contribution to the overall gas holdup in large diameter columns of very high viscosity oil.

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. (in press). An experimental study on the effect of gas injection configuration on flow characteristics in high viscosity oil columns. The Canadian journal of chemical engineering, 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.

Vertical upward and downward churn flow: Similarities and differences (2019)
Journal Article
Bouyahiaoui, H., Azzi, A., Zeghloul, A., Hasan, A. H., Al-Sarkhi, A., & Parsi, M. (2020). Vertical upward and downward churn flow: Similarities and differences. Journal of Natural Gas Science and Engineering, 73, Article 103080. https://doi.org/10.1016/j.jngse.2019.103080

Investigation of downward two-phase flows received less attention compared to the vertical upward flows. Downward flows are found in many industries and facilities including; oil/gas production, nuclear industry and petroleum refinery/production faci... Read More about Vertical upward and downward churn flow: Similarities and differences.

Experimental investigation of the vertical upward single and two-phase flow pressure drops through gate and ball valves (2019)
Journal Article
Zeghloul, A., Bouyahiaoui, H., Azzi, A., Hasan, A., & Al-sarkhi, A. (2020). Experimental investigation of the vertical upward single and two-phase flow pressure drops through gate and ball valves. Journal of Fluids Engineering, 142(2), Article FE-19-1329. https://doi.org/10.1115/1.4044833

This paper presents an experimental investigation of the pressure drop through valves in vertical upward flows. Experiments were carried out using a 1¼" (DN 32) ball and a gate valve. Five opening areas have been investigated from fully open to the n... Read More about Experimental investigation of the vertical upward single and two-phase flow pressure drops through gate and ball valves.

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.

Thin film thickness measurements in two phase annular flows using ultrasonic pulse echo techniques (2019)
Journal Article
Al-Aufi, Y., Hewakandamby, B., Dimitrakis, G., Holmes, M., Hasan, A., & Watson, N. (2019). Thin film thickness measurements in two phase annular flows using ultrasonic pulse echo techniques. Flow Measurement and Instrumentation, 66, 67-78. https://doi.org/10.1016/j.flowmeasinst.2019.02.008

The electric power generation and oil/gas production industries have a strong interest in the physical characterization of conducting and non-conducting liquid films that are formed during the flow of liquids in pipes. Conducting and non-conducting l... Read More about Thin film thickness measurements in two phase annular flows using ultrasonic pulse echo techniques.

Experimental study of the characteristics of an upward two-phase slug flow in a vertical pipe (2018)
Journal Article
Saidj, F., Hasan, A., Bouyahiaoui, H., Zeghloul, A., & Azzi, A. (2018). Experimental study of the characteristics of an upward two-phase slug flow in a vertical pipe. Progress in Nuclear Energy, 108, 428-437. https://doi.org/10.1016/j.pnucene.2018.07.001

Characteristics of the slug flow, mean void fraction, liquid slug and Taylor bubble lengths; and structure frequency were all extracted from the void fraction time series. Average void fractions at nine axial positions have been measured on a 6 m lon... Read More about Experimental study of the characteristics of an upward two-phase slug flow in a vertical pipe.

Experimental investigation of a vertically downward two-phase air-water slug flow (2017)
Journal Article
Bouyahiaoui, H., Azzi, A., Zeghloul, A., Hasan, A., & Berrouk, A. S. (2018). Experimental investigation of a vertically downward two-phase air-water slug flow. Journal of Petroleum Science and Engineering, 162, 12-21. https://doi.org/10.1016/j.petrol.2017.12.028

The present experimental work investigates the vertical downward two-phase slug flow in a transparent vertical pipe of 34 mm internal diameter. The gas and liquid superficial velocities are in the range of 0–3.27 m/s and 0.015–1.4 m/s respectively. T... Read More about Experimental investigation of a vertically downward two-phase air-water slug flow.

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, 16-29. https://doi.org/10.1016/j.ijmultiphaseflow.2017.11.018

Churn flow is an important intermediate flow regime occurring 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 have been carried... Read More about Churn flow in high viscosity oils and large diameter columns.

Behavior and pressure drop of an upwardly two-phase flow through multi-hole orifices (2017)
Journal Article
Zeghloul, A., Azzi, A., Hasan, A., & Azzopardi, B. J. (2018). Behavior and pressure drop of an upwardly two-phase flow through multi-hole orifices. Proceedings of the Institution of Mechanical Engineers. Part C, Mechanical engineering science, 232(18), 3281-3299. https://doi.org/10.1177/0954406217736081

Experimental results on hydrodynamic behavior and pressure drop of two-phase mixture flowing upwardly in a pipe containing single- and/or multi-hole orifice plate are presented. It was found from the measurement of the void fraction upstream and down... Read More about Behavior and pressure drop of an upwardly two-phase flow through multi-hole orifices.

An experimental study of a falling liquid film in a vertical pipe (2017)
Presentation / Conference Contribution
Hasan, A., Azzopardi, B., Hewakandamby, B., Mohammed, S. K., & AlAufi, Y. (2019, October). An experimental study of a falling liquid film in a vertical pipe. Presented at 10th World Congress of Chemical Engineering, Spain

The majority of the experimental and theoretical studies in literature on the falling liquid film focus on either small diameter pipes or flat plates. Almost, all these studies provide time series data of the film thickness at a single point on the p... Read More about An experimental study of a falling liquid film in a vertical pipe.

Experimental characterization of interfacial wave structure of a falling liquid film in a vertical large pipe diameter (2016)
Presentation / Conference Contribution
Hasan, A., Azzopardi, B., Hewakandamby, B., AlAufi, Y., Watson, N., & Mohammed, S. (2016, May). Experimental characterization of interfacial wave structure of a falling liquid film in a vertical large pipe diameter. Presented at 9th International Conference of Multiphase Flow, ICMF, Italy

There is considerable literature on the thicknesses of falling liquid films, much of which is focussed on either flat plates or small diameter pipes. Many studies provide time series data of the film thickness at one or two points on the pipe wall. T... Read More about Experimental characterization of interfacial wave structure of a falling liquid film in a vertical large pipe diameter.

Thin film thickness measurements using ultrasonic pulse echo technique (2016)
Presentation / Conference Contribution
Hasan, A., AlAufi, Y., Watson, N., Azzopardi, B., Hewakandamby, B., Dimitrakis, G., & Kalashnikov, A. N. (2016, May). Thin film thickness measurements using ultrasonic pulse echo technique. Presented at ICMF-2016 – 9th International Conference on Multiphase Flow, Firenze