Research Repository

See what's under the surface


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. doi: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

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), doi:10.3390/ma11081329. ISSN 1996-1944

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

CFD assessment of the effect of nanoparticles on the heat transfer properties of acetone/ZnBr2 solution (2017)
Journal Article
Mohammed, H. I., Giddings, D., Walker, G. S., & Power, H. (2018). CFD assessment of the effect of nanoparticles on the heat transfer properties of acetone/ZnBr2 solution. Applied Thermal Engineering, 128, doi:10.1016/j.applthermaleng.2017.08.169. ISSN 1359-4311

A potential novel working fluid for vapour absorption refrigeration utilising very low grade waste heat, is based on acetone and zinc bromide as the salt solution. A Computational Fluid Dynamics (CFD) model is presented of the fluid with zinc oxide n... Read More

Numerical study of wetting transitions on biomimetic surfaces using a lattice Boltzmann approach with large density ratio (2017)
Journal Article
Gong, W., Yan, Y., Chen, S., & Giddings, D. (2017). Numerical study of wetting transitions on biomimetic surfaces using a lattice Boltzmann approach with large density ratio. Journal of Bionic Engineering, 14(3), doi:10.1016/S1672-6529(16)60414-6. ISSN 1672-6529

The hydrophobicity of natural surfaces have drawn much attention of scientific communities in recent years. By mimicking natural surfaces, the manufactured biomimetic hydrophobic surfaces have been widely applied to green technologies such as self-cl... Read More

Benefits of dry comminution of biomass pellets in a knife mill (2017)
Journal Article
Williams, O., Lester, E., Kingman, S., Giddings, D., Lormor, S., & Eastwick, C. (in press). Benefits of dry comminution of biomass pellets in a knife mill. Biosystems Engineering, 160, doi:10.1016/j.biosystemseng.2017.05.011. ISSN 1537-5110

The potential benefits of dry comminution in a knife mill for a diverse range of biomass 6 pellets are explored. The impact of dry comminution on energy consumption, particle size and shape, 7 is examined as well as the link between milling and mecha... Read More

Immiscible thermo-viscous fingering in Hele-Shaw cells (2017)
Journal Article
Jackson, S., Power, H., & Giddings, D. (2017). Immiscible thermo-viscous fingering in Hele-Shaw cells. Computers and Fluids, 156, doi:10.1016/j.compfluid.2017.04.004. ISSN 0045-7930

We investigate immiscible radial displacement in a Hele-Shaw cell with a temperature dependent viscosity using two coupled high resolution numerical methods. Thermal gradients created in the domain through the injection of a low viscosity fluid at a... Read More

The stability of immiscible viscous fingering in Hele-Shaw cells with spatially varying permeability (2017)
Journal Article
Jackson, S., Power, H., Giddings, D., & Stevens, D. (2017). The stability of immiscible viscous fingering in Hele-Shaw cells with spatially varying permeability. Computer Methods in Applied Mechanics and Engineering, 320, doi:10.1016/j.cma.2017.03.030. ISSN 0045-7825

In this paper, we investigate the stability of immiscible viscous fingering in Hele-Shaw cells with spatially varying permeability, across a range of capillary numbers. We utilise a coupled boundary element - radial basis function (BE –RBF) numerical... Read More

Overcoming the caking phenomenon in olive mill wastes (2017)
Journal Article
Williams, O., Eastwick, C., Kingman, S., Giddings, D., Lormor, S., & Lester, E. (2017). Overcoming the caking phenomenon in olive mill wastes. Industrial Crops and Products, 101, doi:10.1016/j.indcrop.2017.02.036. ISSN 0926-6690

The use of olive mill wastes (orujillo) within coal fired power stations in the UK has led to unexpected difficulties with material caking within the fuel handling plant. This study replicated orujillo caking on a laboratory scale using a planetary b... Read More

Influence of mill type on densified biomass comminution (2016)
Journal Article
Williams, O., Newbolt, G., Eastwick, C., Kingman, S. W., Giddings, D., Lormor, S., & Lester, E. (2016). Influence of mill type on densified biomass comminution. Applied Energy, 182, doi:10.1016/j.apenergy.2016.08.111. ISSN 0306-2619

The impact of different mill fracture mechanisms were examined for a wide range of densified biomass pellets to provide a comprehensive analysis of biomass milling behaviour for pulverised fuel combustion. The milling behaviour of 7 woody, herbaceous... Read More

The impact of moisture on the milling behavior of different biomasses (2014)
Conference Proceeding
Williams, O., Eastwick, C., Lester, E., Giddings, D., & Byrne, N. (2014). The impact of moisture on the milling behavior of different biomasses

The aim of this study was to examine the impact of moisture content on the milling behaviour of four different biomasses commonly used in the power sector and characterise their milling behaviour in a laboratory scale planetary ball mill. As received... Read More