All Outputs (33)

Enhanced offshore wind resource assessment using hybrid data fusion and numerical models (2024)
Journal Article
Elshafei, B., Popov, A., & Giddings, D. (2024). Enhanced offshore wind resource assessment using hybrid data fusion and numerical models. Energy, 310, Article 133208. https://doi.org/10.1016/j.energy.2024.133208

Wind resource assessments are crucial for pre-construction planning of wind farms, especially offshore. This study proposes a novel hybrid model integrating Complete Ensemble Empirical Mode Decomposition with Adaptive Noise (CEEMDAN) and Empirical Wa... Read More about Enhanced offshore wind resource assessment using hybrid data fusion and numerical models.

Offshore wind resource assessment based on scarce spatio-temporal measurements using matrix factorization (2022)
Journal Article
Elshafei, B., Peña, A., Popov, A., Giddings, D., Ren, J., Xu, D., & Mao, X. (2023). Offshore wind resource assessment based on scarce spatio-temporal measurements using matrix factorization. Renewable Energy, 202, 1215-1225. https://doi.org/10.1016/j.renene.2022.12.006

In the pre-construction of wind farms, wind resource assessment is of paramount importance. Measurements by lidars are a source of high-fidelity data. However, they are expensive and sparse in space and time. Contrarily, Weather Research and Forecast... Read More about Offshore wind resource assessment based on scarce spatio-temporal measurements using matrix factorization.

4-dimensional local radial basis function interpolation of large, uniformly spaced datasets (2022)
Journal Article
Thewlis, J., Stevens, D., Power, H., Giddings, D., Gowland, P., & Vloeberghs, M. (2023). 4-dimensional local radial basis function interpolation of large, uniformly spaced datasets. Computer Methods and Programs in Biomedicine, 228, Article 107235. https://doi.org/10.1016/j.cmpb.2022.107235

Background and Objective: Large, uniformly spaced, complex and time varying datasets derived from high resolution medical image velocimetry can provide a wealth of information regarding small-scale transient physiological flow phenomena and pulsation... Read More about 4-dimensional local radial basis function interpolation of large, uniformly spaced datasets.

CFD Approach to the Influence of Particle Size on Erosive Wear in Coal Riser Pipes (2022)
Journal Article
Ogunlela, P. T., Giddings, D., Bennett, C., Born, S., Klaassen, M., Gennissen, I., & Farnish, R. (2022). CFD Approach to the Influence of Particle Size on Erosive Wear in Coal Riser Pipes. Journal of Fluid Flow, Heat and Mass Transfer, 9, 43-48. https://doi.org/10.11159/jffhmt.2022.006

Pneumatic conveying of finely pulverised coal particles is an important process in the steelmaking industry, used to transport coal to the blast furnace. Erosive wear caused by high velocity particles impacting on the inner wall surfaces of pneumatic... Read More about CFD Approach to the Influence of Particle Size on Erosive Wear in Coal Riser Pipes.

A hybrid solution for offshore wind resource assessment from limited onshore measurements (2021)
Journal Article
Elshafei, B., Peña, A., Xu, D., Ren, J., Badger, J., Pimenta, F. M., …Mao, X. (2021). A hybrid solution for offshore wind resource assessment from limited onshore measurements. Applied Energy, 298, Article 117245. https://doi.org/10.1016/j.apenergy.2021.117245

In wind resource assessments, which are critical to the pre-construction of wind farms, measurements by LiDARs or masts are a source of high-fidelity data, but are expensive and scarce in space and time, particularly for offshore sites. On the other... Read More about A hybrid solution for offshore wind resource assessment from limited onshore measurements.

Localized heating element distribution in composite metal foam-phase change material: Fourier's law and creeping flow effects (2021)
Journal Article
Talebizadeh Sardari, P., Mohammed, H. I., Mahdi, J. M., Ghalambaz, M., Gillott, M., Walker, G. S., …Giddings, D. (2021). Localized heating element distribution in composite metal foam-phase change material: Fourier's law and creeping flow effects. International Journal of Energy Research, 45(9), 13380-13396. https://doi.org/10.1002/er.6665

A numerical parametric study is presented of a domestic thermal storage heat exchanger to explore the effect of highly localized positive temperature coefficient cylindrical heating elements in a phase change material (PCM) with conductive enhancemen... Read More about Localized heating element distribution in composite metal foam-phase change material: Fourier's law and creeping flow effects.

Improved melting of latent heat storage via porous medium and uniform Joule heat generation (2020)
Journal Article
Mohammed, H. I., Talebizadehsardari, P., Mahdi, J. M., Arshad, A., Sciacovelli, A., & Giddings, D. (2020). Improved melting of latent heat storage via porous medium and uniform Joule heat generation. Journal of Energy Storage, 31, Article 101747. https://doi.org/10.1016/j.est.2020.101747

© 2020 To enhance the rate of heat transfer in phase change materials (PCM), high conductivity porous materials have been widely used recently as a promising method. This study introduces a novel approach for improving melting of PCM by incorporating... Read More about Improved melting of latent heat storage via porous medium and uniform Joule heat generation.

Energy recovery from domestic radiators using a compact composite metal Foam/PCM latent heat storage (2020)
Journal Article
Talebizadeh Sardari, P., Babaei-Mahani, R., Giddings, D., Yasseri, S., Moghimi, M. A., & Bahai, H. (2020). Energy recovery from domestic radiators using a compact composite metal Foam/PCM latent heat storage. Journal of Cleaner Production, 257, Article 120504. https://doi.org/10.1016/j.jclepro.2020.120504

© 2020 Elsevier Ltd With the increasing demand for energy consumption in domestic buildings and consequent CO2 emission, there is a need to provide proper products to reduce energy loss. Domestic radiators for space heating can be improved by using a... Read More about Energy recovery from domestic radiators using a compact composite metal Foam/PCM latent heat storage.

The influence of control vanes on pneumatic conveying of pulverised fuel at a trifurcator (2019)
Journal Article
Abubakar, I., Giddings, D., Panorios, B., Branson, D., Lad, N., & Townsend, S. (2020). The influence of control vanes on pneumatic conveying of pulverised fuel at a trifurcator. Powder Technology, 362, 197-207. https://doi.org/10.1016/j.powtec.2019.11.111

© 2019 Elsevier B.V. Distribution of pulverised fuels in pneumatic conveying to conventional boilers is an ongoing research area with the intention of improving the performance of power-generating plants. One of the major challenges is the issue of o... Read More about The influence of control vanes on pneumatic conveying of pulverised fuel at a trifurcator.

Thermo-physical properties of the nano-binary fluid (acetone–zinc bromide-ZnO) as a low temperature operating fluid for use in an absorption refrigeration machine (2019)
Journal Article
Mohammed, H. I., Giddings, D., & Walker, G. S. (2020). Thermo-physical properties of the nano-binary fluid (acetone–zinc bromide-ZnO) as a low temperature operating fluid for use in an absorption refrigeration machine. Heat and Mass Transfer, 56, 1037–1044. https://doi.org/10.1007/s00231-019-02760-5

© 2019, Springer-Verlag GmbH Germany, part of Springer Nature. The current technical note is an expression for extending aspects of the previous work of Ajib and Karno [1] which related to the thermophysical properties of acetone / ZnBr2. The study c... Read More about Thermo-physical properties of the nano-binary fluid (acetone–zinc bromide-ZnO) as a low temperature operating fluid for use in an absorption refrigeration machine.

Discharge of a composite metal foam/phase change material to air heat exchanger for a domestic thermal storage unit (2019)
Journal Article
Talebizadeh Sardari, P., Giddings, D., Grant, D., Gillott, M., & Walker, G. S. (2020). Discharge of a composite metal foam/phase change material to air heat exchanger for a domestic thermal storage unit. Renewable Energy, 148, 987-1001. https://doi.org/10.1016/j.renene.2019.10.084

This paper evaluates the discharging mechanism in a PCM (phase change material) to air heat exchanger for the purpose of space heating using a composite of copper foam and PCM. The composite system is modelled with both 2-D and 3-D computational flui... Read More about Discharge of a composite metal foam/phase change material to air heat exchanger for a domestic thermal storage unit.

Numerical study of a multiple-segment metal foam-PCM latent heat storage unit: Effect of porosity, pore density and location of heat source (2019)
Journal Article
Sardari, P. T., Mohammed, H. I., Giddings, D., walker, G. S., Gillott, M., & Grant, D. (2019). Numerical study of a multiple-segment metal foam-PCM latent heat storage unit: Effect of porosity, pore density and location of heat source. Energy, 189, Article 116108. https://doi.org/10.1016/j.energy.2019.116108

This study numerically investigates the performance of the melting process for a PCM based heat storage system under the effect of different variables in a vertical container with a copper metal foam. Different cases were studied and compared includi... Read More about Numerical study of a multiple-segment metal foam-PCM latent heat storage unit: Effect of porosity, pore density and location of heat source.

Multiphase flow and boiling heat transfer modelling of nanofluids in horizontal tubes embedded in a metal foam (2019)
Journal Article
Mohammed, H. I., Talebizadehsardari, P., & Giddings, D. (2019). Multiphase flow and boiling heat transfer modelling of nanofluids in horizontal tubes embedded in a metal foam. International Journal of Thermal Sciences, 146, Article 106099. https://doi.org/10.1016/j.ijthermalsci.2019.106099

© 2019 Elsevier Masson SAS The aim of this numerical study is to evaluate the boiling process of nanofluid in horizontal tubes in the presence of a metal foam as porous medium and represent the experimental work of Zhao et al. in a numerical aspect w... Read More about Multiphase flow and boiling heat transfer modelling of nanofluids in horizontal tubes embedded in a metal foam.

Numerical modelling of phase change material melting process embedded in porous media: Effect of heat storage size (2019)
Journal Article
Talebizadeh Sardari, P., Walker, G. S., Gillott, M., Grant, D., & Giddings, D. (2019). Numerical modelling of phase change material melting process embedded in porous media: Effect of heat storage size. Proceedings of the Institution of Mechanical Engineers, Part A: Journal of Power and Energy, 1-19. https://doi.org/10.1177/0957650919862974

The aim of this paper is to study the influence of enclosure size in latent heat thermal energy storage systems embedded in a porous medium for domestic usage of latent heat thermal energy storage heat exchangers. A 2-D rectangular enclosure is consi... Read More about Numerical modelling of phase change material melting process embedded in porous media: Effect of heat storage size.

CFD multiphase modelling of the acetone condensation and evaporation process in a horizontal circular tube (2019)
Journal Article
Mohammed, H. I., Giddings, D., Walker, G. S., & Power, H. (2019). CFD multiphase modelling of the acetone condensation and evaporation process in a horizontal circular tube. International Journal of Heat and Mass Transfer, 134, 1159-1170. https://doi.org/10.1016/j.ijheatmasstransfer.2019.02.062

With increasing demands on energy efficiency, the use of low grade waste heat using vapour absorption refrigeration systems (VARS) are receiving renewed interest. One idea is to use the combination of acetone and zinc bromide as the salt solution, wh... Read More about CFD multiphase modelling of the acetone condensation and evaporation process in a horizontal circular tube.

Experimental investigation of nanoparticles concentration, boiler temperature and flow rate on flow boiling of zinc bromide and acetone solution in a rectangular duct (2018)
Journal Article
Mohammed, H. I., Giddings, D., & Walker, G. S. (2019). Experimental investigation of nanoparticles concentration, boiler temperature and flow rate on flow boiling of zinc bromide and acetone solution in a rectangular duct. International Journal of Heat and Mass Transfer, 130, 710-721. https://doi.org/10.1016/j.ijheatmasstransfer.2018.10.115

Despite the increase in heat transfer properties of nano-fluids, they are not currently used in vapour absorption refrigeration systems (VARS), and there is little literature on the flow boiling behaviour of concentrated salt solutions with nano-part... Read More about Experimental investigation of nanoparticles concentration, boiler temperature and flow rate on flow boiling of zinc bromide and acetone solution in a rectangular duct.

Nano-particle deposition in the presence of electric field (2018)
Journal Article
Talebizadeh Sardari, P., Rahimzadeh, H., Ahmadi, G., & Giddings, D. (2018). Nano-particle deposition in the presence of electric field. Journal of Aerosol Science, 126, 169-179. https://doi.org/10.1016/j.jaerosci.2018.09.012

The dispersion and deposition of nano-particles in laminar flows in the presence of an electric field were studied. The Eulerian-Lagrangian particle tracking method was used to simulate nano-particle motions under the one-way coupling assumption. For... Read More about Nano-particle deposition in the presence of electric field.

Applicability of mechanical tests for biomass pellet characterisation for bioenergy applications (2018)
Journal Article
Williams, O., Taylor, S., Lester, E., Kingman, S., Giddings, D., & Eastwick, C. (2018). Applicability of mechanical tests for biomass pellet characterisation for bioenergy applications. Materials, 11(8), Article 1329. https://doi.org/10.3390/ma11081329

In this paper, the applicability of mechanical tests for biomass pellet characterisation was investigated. Pellet durability, quasi-static (low strain rate), and dynamic (high strain rate) mechanical tests were applied to mixed wood, eucalyptus, sunf... Read More about Applicability of mechanical tests for biomass pellet characterisation for bioenergy applications.

Wet steam measurement techniques (2018)
Journal Article
Walker, D., Barham, S., Giddings, D., & Dimitrakis, G. (2019). Wet steam measurement techniques. Reviews in Chemical Engineering, 35(5), 627-648. https://doi.org/10.1515/revce-2017-0078

In recent years a greater need for power station efficiency has become evident; improving turbine blade efficiency is one of the methods proposed. This efficiency relies upon the wetness of the steam that comes into contact with the blades of the low... Read More about Wet steam measurement techniques.

CFD simulation of a concentrated salt nanofluid flow boiling in a rectangular tube (2018)
Journal Article
Mohammed, H. I., Giddings, D., & Walker, G. S. (2018). CFD simulation of a concentrated salt nanofluid flow boiling in a rectangular tube. International Journal of Heat and Mass Transfer, 125, 218-228. https://doi.org/10.1016/j.ijheatmasstransfer.2018.04.069

© 2018 Elsevier Ltd Improvement of heat transfer and critical heat flux (CHF) via nanofluid in pool boiling is well known. Flow boiling is usually represented by heat transfer correlations. But in the case of a concentrated salt solution nanofluid, t... Read More about CFD simulation of a concentrated salt nanofluid flow boiling in a rectangular tube.