Dr Ghazi Droubi's Outputs (34)

Quantitative analysis of the Hsu-Nielsen source through advanced measurement and simulation techniques. (2024)
Presentation / Conference Contribution
ABOLLE-OKOYEAGU, C.J., FATUKASI, O., DROUBI, G. and REUBEN, R.L. 2024. Quantitative analysis of the Hsu-Nielsen source through advanced measurement and simulation techniques. Journal of physics: conference series [online], 2805: proceedings of the 8th International conference on mechanical, aeronautical and automotive engineering 2024 (ICMAA 2024), 02-04 February 2024, Penang, Malaysia: [virtual event], article 012013. Available from: https://doi.org/10.1088/1742-6596/2805/1/012013

This paper presents the results from conducting a series of experiments with a Hsu-Nielsen Source, accompanied by corresponding numerical simulations on a solid block. The aim being to illustrate a Finite Element Analysis (FEA) approach for simulatin... Read More about Quantitative analysis of the Hsu-Nielsen source through advanced measurement and simulation techniques..

The impact of ice formation on vertical axis wind turbine performance and aerodynamics. (2023)
Journal Article
GERRIE, S., ISLAM, S.Z., GERRIE, C., DROUBI, G. and ASIM, T. 2023. The impact of ice formation on vertical axis wind turbine performance and aerodynamics. Wind [online], 3(1), pages 16-24. Available from: https://doi.org/10.3390/wind3010003

This study investigated the impact of ice formation on the performance and aerodynamics of a vertical axis wind turbine (VAWT). This is an area that is becoming more prevalent as VAWTs are installed alongside horizontal axis wind turbines (HAWTs) in... Read More about The impact of ice formation on vertical axis wind turbine performance and aerodynamics..

Investigation of the effects of pipe diameter of internal multiphase flow on pipe elbow vibration and resonance. [Dataset] (2022)
Data
ASIEGBU, N.M., HOSSAIN, M., DROUBI, G.M. and ISLAM, S.Z. 2023. Investigation of the effects of pipe diameter of internal multiphase flow on pipe elbow vibration and resonance. [Dataset]. Proceedings of the Institution of Mechanical Engineers, part E: journal of process mechanical engineering [online], 237(4), pages 1319-1330. Available from: https://journals.sagepub.com/doi/suppl/10.1177/09544089221115520

This output contains supplementary material of tables and figures to accompany the main article of 'Investigation of the effects of pipe diameter of internal multiphase flow on pipe elbow vibration and resonance' by Nkemjika Mirian Asiegbu, Mamdud Ho... Read More about Investigation of the effects of pipe diameter of internal multiphase flow on pipe elbow vibration and resonance. [Dataset].

Investigation of the effects of pipe diameter of internal multiphase flow on pipe elbow vibration and resonance. (2022)
Journal Article
ASIEGBU, N.M., HOSSAIN, M., DROUBI, G.M. and ISLAM, S.Z. 2023. Investigation of the effects of pipe diameter of internal multiphase flow on pipe elbow vibration and resonance. Proceedings of the Institution of Mechanical Engineers, part E: journal of process mechanical engineering [online], 237(4), pages 1319-1330. Available from: https://doi.org/10.1177/09544089221115520

Computational fluid dynamics modelling of internal two-phase flow induced transient forces at 90° elbows have been carried out to evaluate the effect of pipe diameter on the characteristics of multiphase flow induced vibration. Simulations of two-pha... Read More about Investigation of the effects of pipe diameter of internal multiphase flow on pipe elbow vibration and resonance..

Effect of fillers on compression loading performance of modified re-entrant honeycomb auxetic sandwich structures. (2022)
Journal Article
FAISAL, N.H., SCOTT, L., BOOTH, F., DUNCAN, S., MCLEOD, A., DROUBI, M.G. and NJUGUNA, J. 2023. Effect of fillers on compression loading performance of modified re-entrant honeycomb auxetic sandwich structures. Journal of strain analysis for engineering design [online], 58(2), pages 98-117. Available from: https://doi.org/10.1177/03093247221083210

The auxetic sandwich panels for structures have been designed to provide impact protection. The aim of this work is to modify an auxetic (re-entrant) honeycomb cell to reduce the stress concentrations within the cell structure, and further enhancemen... Read More about Effect of fillers on compression loading performance of modified re-entrant honeycomb auxetic sandwich structures..

Computational fluid dynamics modelling of fluid flow inside fractured reservoirs. (2021)
Thesis
AL-MASHHADANIE, H.A.J. 2021. Computational fluid dynamics modelling of fluid flow inside fractured reservoirs. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1603660

Fractured media exist in most layers of the earth's crust, often dominating bulk properties of subsurface geological formations. Therefore, fractured media are involved in many key engineering sectors that impact humans living on Earth. Fractured for... Read More about Computational fluid dynamics modelling of fluid flow inside fractured reservoirs..

Data reduction strategies. (2021)
Book Chapter
BHOWMIK, B., QUQA, S., SAUSE, M.G.R., PAKRASHI, V. and DROUBI, M.G. 2021. Data reduction strategies. In Sause, M.G.R. and Jasiūnienė, E. (eds.) Structural health monitoring damage detection systems for aerospace. Springer aerospace technology. Cham: Springer [online], chapter 9, pages 243-272. Available from: https://doi.org/10.1007/978-3-030-72192-3_9

Based on the variety of methods available for gathering data for the aircraft health status, the challenge is to reduce the overall amount of data in a trackable and safe manner to ensure that the remaining data are characteristic of the current airc... Read More about Data reduction strategies..

Monitoring tasks in aerospace. (2021)
Book Chapter
PANT, S., SHARIF KHODAEI, Z. and DROUBI, M.G. 2021. Monitoring tasks in aerospace. In Sause, M.G.R. and Jasiūnienė, E. (eds.) Structural health monitoring damage detection systems for aerospace. Springer aerospace technology. Cham: Springer [online], chapter 2, pages 5-14. Available from: https://doi.org/10.1007/978-3-030-72192-3_2

Approximately up to one-fifth of the direct operating cost of a commercial civilian fixed-wing aircraft is projected to be due to inspection and maintenance alone. Managing aircraft health with minimal human intervention and technologies that can per... Read More about Monitoring tasks in aerospace..

Defect detection and condition assessment of adhesively-bonded joints using acoustic emission techniques. (2021)
Thesis
CRAWFORD, A.R. 2021. Defect detection and condition assessment of adhesively-bonded joints using acoustic emission techniques. Robert Gordon University, PhD thesis. Hosted on OpenAIR [online]. Available from: https://doi.org/10.48526/rgu-wt-1603651

The aim of this study is to investigate the application of acoustic emission (AE) techniques to the defect detection and monitoring of adhesively-bonded joints. Pencil Lead Breaks (PLBs) have been used as a simulated AE source to experimentally inves... Read More about Defect detection and condition assessment of adhesively-bonded joints using acoustic emission techniques..

Computational fluid dynamics modelling of multiphase flows in double elbow geometries. (2021)
Journal Article
OGUNSESAN, O.A., HOSSAIN, M. and DROUBI, M.G. 2021. Computational fluid dynamics modelling of multiphase flows in double elbow geometries. Proceedings of the Institution of Mechanical Engineers, Part E: journal of process mechanical engineering [online], 235(6), pages 1835-1846. Available from: https://doi.org/10.1177/09544089211021744

This study investigates the effects of elbow on the transition and development of multiphase flow using computational fluid dynamics modelling techniques. The Eulerian - Multifluid VOF model coupled with an Interfacial Area Transport Equation has bee... Read More about Computational fluid dynamics modelling of multiphase flows in double elbow geometries..

Uncertainty reduction in reservoir parameters prediction from multiscale data using machine learning in deep offshore reservoirs. (2020)
Thesis
ARIGBE, O.D. 2020. Uncertainty reduction in reservoir parameters prediction from multiscale data using machine learning in deep offshore reservoirs. Robert Gordon University [online], PhD thesis. Available from: https://openair.rgu.ac.uk

Developing a complete characterization of reservoir properties involved in subsurface multiphase flow is a very challenging task. In most cases, these properties - such as porosity, water saturation, permeability (and their variants), pressure, wetta... Read More about Uncertainty reduction in reservoir parameters prediction from multiscale data using machine learning in deep offshore reservoirs..

Numerical fluid flow modelling in multiple fractured porous reservoirs. (2020)
Journal Article
SURI, Y., ISLAM, S.Z., STEPHEN, K., DONALD, C., THOMPSON, M., DROUBI, M.G. and HOSSAIN, M. 2020. Numerical fluid flow modelling in multiple fractured porous reservoirs. Fluid dynamics and materials processing [online], 16(2), pages 245-266. Available from: https://doi.org/10.32604/fdmp.2020.06505

This paper compares the fluid flow phenomena occurring within a fractured reservoir for three different fracture models using computational fluid dynamics. The effect of the fracture-matrix interface condition is studied on the pressure and velocity... Read More about Numerical fluid flow modelling in multiple fractured porous reservoirs..

CFD modelling of flow-induced vibration under multiphase flow regimes. (2020)
Thesis
ASIEGBU, N.M. 2020. CFD modelling of flow-induced vibration under multiphase flow regimes. Robert Gordon University [online], PhD thesis. Available from: https://openair.rgu.ac.uk

Internal multiphase flow-induced vibration (MFIV) in pipe bends poses serious problems in oil and gas, nuclear and chemical flow systems. The problems include: high amplitude displacement of the pipe structure due to resonance; fatigue failure due to... Read More about CFD modelling of flow-induced vibration under multiphase flow regimes..

CFD modelling of pipe erosion under multiphase flow regimes. (2020)
Thesis
OGUNSESAN, O.A. 2020. CFD modelling of pipe erosion under multiphase flow regimes. Robert Gordon University [online], PhD thesis. Available from: https://openair.rgu.ac.uk

Pipe erosion due to sand transport can have an adverse effect on the production efficiency of pipe-lines and other related flow systems. Proper knowledge of the flow characteristics, particle behaviour and geometric effects is very important in the a... Read More about CFD modelling of pipe erosion under multiphase flow regimes..

Investigation of slug-churn flow induced transient excitation forces at pipe bend. (2019)
Journal Article
HOSSAIN, M., CHINENYE-KANU, N.M., DROUBI, G.M. and ISLAM, S.Z. 2019. Investigation of slug-churn flow induced transient excitation forces at pipe bend. Journal of fluids and structures [online], 91, article ID 102733. Available from: https://doi.org/10.1016/j.jfluidstructs.2019.102733

Numerical simulations of two-phase flow induced fluctuating forces at a pipe bend have been carried out to study the characteristics of multiphase flow induced vibration (FIV). The multiphase flow patterns and turbulence were modelled using the volum... Read More about Investigation of slug-churn flow induced transient excitation forces at pipe bend..

Effect of oleic acid coating of iron oxide nanoparticles on properties of magnetic polyamide-6 nanocomposite. (2019)
Journal Article
GUPTA, R., PANCHOLI, K., DE SA, R., MURRAY, D., HUO, D., DROUBI, G., WHITE, M. and NJUGUNA, J. 2019. Effect of oleic acid coating of iron oxide nanoparticles on properties of magnetic polyamide-6 nanocomposite. JOM [online], 71(9), pages 3119-3128. Available from: https://doi.org/10.1007/s11837-019-03622-5

This work reports the development and testing of a magnetic polymer (Polyamide 6, PA6) nanocomposite capable of melting when exposed to an external magnetic field. Addition of high concentrations of iron oxide nanoparticles (NPs) can induce quick mel... Read More about Effect of oleic acid coating of iron oxide nanoparticles on properties of magnetic polyamide-6 nanocomposite..

Indentation based strength analysis of adhesively bonded leading-edge composite joints in wind turbine blades. (2019)
Journal Article
DROUBI, M.G., FOSBROOKE, C., MCCONNACHIE, J. and FAISAL, N.H. 2019. Indentation based strength analysis of adhesively bonded leading-edge composite joints in wind turbine blades. SN applied sciences [online], 1(7), article ID 691. Available from: https://doi.org/10.1007/s42452-019-0735-6

Wind turbine is a source of non-polluting renewable energy. Whether a wind turbine is viable depends entirely on the structural integrity of turbine blade. To assess the structural integrity of wind turbine blades it is necessary to investigate the l... Read More about Indentation based strength analysis of adhesively bonded leading-edge composite joints in wind turbine blades..

Real-time relative permeability prediction using deep learning. (2018)
Journal Article
ARIGBE, O.D., OYENEYIN, M.B., ARANA, I. and GHAZI, M.D. 2019. Real-time relative permeability prediction using deep learning. Journal of petroleum exploration and production technologies [online], 9(2), pages 1271-1284. Available from: https://doi.org/10.1007/s13202-018-0578-5

A review of the existing two and three phase relative permeability correlations shows a lot of pitfalls and restrictions imposed by (a) their assumptions (b) generalization ability and (c) difficulty with updating in real time for different reservoir... Read More about Real-time relative permeability prediction using deep learning..

CFD modelling of pipe erosion due to sand transport. (2018)
Presentation / Conference Contribution
OGUNSESAN, O.A., HOSSAIN, M., IYI, D. and DHROUBI, M.G. 2018. CFD modelling of pipe erosion due to sand transport. In Wahab, M.A. (ed.) Proceedings of the 1st International conference on numerical modelling in engineering (NME 2018), 28-29 August 2018, Ghent, Belgium. Volume 2: numerical modelling in mechanical and materials engineering. Lecture notes in mechanical engineering. Singapore: Springer [online], pages 274-289. Available from: https://doi.org/10.1007/978-981-13-2273-0_22

Erosion caused by sand particles is a serious problem facing the oil and gas industry. Predicting pipe erosion due to sand transport is a complex process in multiphase flows due to the complex nature of the flow. Existing erosion studies are however... Read More about CFD modelling of pipe erosion due to sand transport..

Analysis of acoustic emission propagation in metal-to-metal adhesively-bonded joints. (2018)
Journal Article
CRAWFORD, A., DROUBI, M.G. and FAISAL, N.H. 2018. Analysis of acoustic emission propagation in metal-to-metal adhesively-bonded joints. Journal of nondestructive evaluation [online], 37(2), article number 33. Available from: https://doi.org/10.1007/s10921-018-0488-y

Acoustic emission (AE) monitoring shows promise as one of the most effective methods for condition monitoring of adhesively-bonded joints. Previous research has demonstrated its ability to detect, locate and classify adhesive joint failure, though in... Read More about Analysis of acoustic emission propagation in metal-to-metal adhesively-bonded joints..