Dr Ghazi Droubi's Outputs (17)

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. (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 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..

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..

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..

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..

Investigation of sand transport in an undulated pipe using computational fluid dynamics. (2017)
Journal Article
TEBOWEI, R., HOSSAIN, M., ISLAM, S.Z., DROUBI, M.G. and OLUYEMI, G. 2018. Investigation of sand transport in an undulated pipe using computational fluid dynamics. Journal of petroleum science and engineering [online], 162, pages 747-762. Available from: https://doi.org/10.1016/j.petrol.2017.11.003

A CFD model has been implemented to investigate the effects the pipe undulation on sand transport. Of particular interest of the present study is the sand deposition in small angled V-inclined bend relevant to oil and gas subsea flowlines where sand... Read More about Investigation of sand transport in an undulated pipe using computational fluid dynamics..

Flow noise identification using acoustic emission (AE) energy decomposition for sand monitoring in flow pipeline. (2017)
Journal Article
DROUBI, M.G., REUBEN, R.L. and STEEL, J.I. 2018. Flow noise identification using acoustic emission (AE) energy decomposition for sand monitoring in flow pipeline. Applied acoustics [online], 131, pages 5-15. Available from: https://doi.org/10.1016/j.apacoust.2017.10.016

In pipelines used for petroleum production and transportation, sand particles may be present in the multi-phase flow of oil and gas and water. The Acoustic Emission (AE) measurement technique is used in the field of sand monitoring and detection in t... Read More about Flow noise identification using acoustic emission (AE) energy decomposition for sand monitoring in flow pipeline..

Acoustic emission method for defect detection and identification in carbon steel welded joints. (2017)
Journal Article
DROUBI, M.G., FAISAL, N.H., ORR, F., STEEL, J.A. and EL-SHAIB, M. 2017. Acoustic emission method for defect detection and identification in carbon steel welded joints. Journal of constructional steel research [online], 134, pages 28-37. Available from: https://doi.org/10.1016/j.jcsr.2017.03.012

Detecting welding defects in industrial equipment (welded joints and built-up structures) is a key aspect in evaluating the probability of failure in different situations. Acoustic emission (AE) is an effective non-destructive detecting technique, an... Read More about Acoustic emission method for defect detection and identification in carbon steel welded joints..

Cyclic nanoindentation and nano-impact fatigue mechanisms of functionally graded TiN/TiNi film. (2017)
Journal Article
FAISAL, N.H., PRATHURU, A.K., GOEL, S., AHMED, R., DROUBI, M.G., BEAKE, B.D. and FU, Y.Q. 2017. Cyclic nanoindentation and nano-impact fatigue mechanisms of functionally graded TiN/TiNi film. Shape memory and superelasticity [online], 3(2), pages 149-167. Available from: https://doi.org/10.1007/s40830-017-0099-y

The mechanisms of nanoscale fatigue of functionally graded TiN/TiNi films have been studied using multiple-loading cycle nanoindentation and nano-impact tests. The functionally graded films were sputter-deposited onto silicon substrates, in which the... Read More about Cyclic nanoindentation and nano-impact fatigue mechanisms of functionally graded TiN/TiNi film..

Acoustic emission method to study fracture (Mode-I, II) and residual strength characteristics in composite-to-metal and metal-to-metal adhesively bonded joints. (2017)
Journal Article
DROUBI, M.G., STUART, A., MOWAT, J., NOBLE, C., PRATHURU, A.K. and FAISAL, N.H. 2017. Acoustic emission method to study fracture (Mode-I, II) and residual strength characteristics in composite-to-metal and metal-to-metal adhesively bonded joints. Journal of adhesion [online], 94(5), pages 347-386. Available from: https://doi.org/10.1080/00218464.2017.1278696

Failure behaviour of two types of adhesively bonded joints (composite-to-metal, metal-to-metal) has been studied under failure modes (Mode I: double cantilever beam (DCB) and Mode II: three-point end notch flexures (3-ENF)) using acoustic emission (A... Read More about Acoustic emission method to study fracture (Mode-I, II) and residual strength characteristics in composite-to-metal and metal-to-metal adhesively bonded joints..

Monitoring acoustic emission (AE) energy of abrasive particle impacts in a slurry flow loop using a statistical distribution model. (2016)
Journal Article
DROUBI, M.G. and REUBEN, R.L. 2016. Monitoring acoustic emission (AE) energy of abrasive particle impacts in a slurry flow loop using a statistical distribution model. Applied acoustics [online], 113, pages 202-209. Available from: https://doi.org/10.1016/j.apacoust.2016.06.026

Slurry erosion has been recognized as a serious problem in many industrial applications. In slurry flows, the estimation of the amount of incident kinetic energy that transmits from particles suspended in the fluid to the containment structures is a... Read More about Monitoring acoustic emission (AE) energy of abrasive particle impacts in a slurry flow loop using a statistical distribution model..

Monitoring acoustic emission (AE) energy in slurry impingement using a new model for particle impact. (2015)
Journal Article
DROUBI, M.G., REUBEN, R.L. and WHITE, G. 2015. Monitoring acoustic emission (AE) energy in slurry impingement using a new model for particle impact. Mechanical systems and signal processing [online], 62-63, pages 415-430. Available from: https://doi.org/10.1016/j.ymssp.2015.01.023

A series of systematic impact tests have been carried out to investigate the influence of particle size, free stream velocity, particle impact angle, and nominal particle concentration on the amount of energy dissipated in a carbon steel target using... Read More about Monitoring acoustic emission (AE) energy in slurry impingement using a new model for particle impact..