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Investigation of fluidized bed behaviour using electrical capacitance tomography (2020)
Journal Article
Azzi, A., Bouyahiaoui, H., Sofiane Berrouk, A., Hunt, A., & Lowndes, I. S. (2020). Investigation of fluidized bed behaviour using electrical capacitance tomography. Canadian Journal of Chemical Engineering, 98(8), 1835-1848. https://doi.org/10.1002/cjce.23748

The temporal and cross‐sectional distributions of particles in a 127 mm diameter fluidized bed have been obtained using a new generation, high‐speed electrical capacitance tomography. Two planes of eight electrodes were used and mounted at 160 mm and... Read More about Investigation of fluidized bed behaviour using electrical capacitance tomography.

Application of TG technique to determine spontaneous heating propensity of coals (2020)
Journal Article
Lowndes, I. S., Mohalik, N. K., & Lester, E. (2021). Application of TG technique to determine spontaneous heating propensity of coals. Journal of Thermal Analysis and Calorimetry, 143, 185-201. https://doi.org/10.1007/s10973-019-09237-x

© 2020, Akadémiai Kiadó, Budapest, Hungary. The TG method is applied to eleven coal samples of varying rank collected from across the Jharia coalfield, India, to determine spontaneous heating susceptibility. Previous literature does not agree as to t... Read More about Application of TG technique to determine spontaneous heating propensity of coals.

Development a modified crossing point temperature (CPTHR) method to assess spontaneous combustion propensity of coal and its chemo-metric analysis (2018)
Journal Article
Mohalik, N., Lester, E., & Lowndes, I. (2018). Development a modified crossing point temperature (CPTHR) method to assess spontaneous combustion propensity of coal and its chemo-metric analysis. Journal of Loss Prevention in the Process Industries, 56, 359-369. https://doi.org/10.1016/j.jlp.2018.09.00

Spontaneous combustion of Indian coals was investigated using spontaneous combustion rig at University of Nottingham, UK to assess their susceptibility. In the present study authors have used eleven coal samples collected from the Jharia coalfield (J... Read More about Development a modified crossing point temperature (CPTHR) method to assess spontaneous combustion propensity of coal and its chemo-metric analysis.

Development of a petrographic technique to assess the spontaneous combustion susceptibility of Indian coals (2017)
Journal Article
Mohalik, N., Lester, E., & Lowndes, I. (in press). Development of a petrographic technique to assess the spontaneous combustion susceptibility of Indian coals. International Journal of Coal Preparation and Utilization, https://doi.org/10.1080/19392699.2017.1360874

Petrographic studies are commonly used categorise the potential utilisation of coals. Eleven coal samples from the jharia coalfield (JCF), india, were studied using petrographic techniques to investigate maceral content, reflectance, and textural cha... Read More about Development of a petrographic technique to assess the spontaneous combustion susceptibility of Indian coals.

Applications of Artificial Neural Network (ANN) method for performance prediction of the effect of a vertical 90° bend on an air-silicone oil flow (2017)
Journal Article
Ayegba, P., Abdulkadir, M., Hernandez-Perez, V., Lowndes, I., & Azzopardi, B. J. (in press). Applications of Artificial Neural Network (ANN) method for performance prediction of the effect of a vertical 90° bend on an air-silicone oil flow. Journal of the Taiwan Institute of Chemical Engineers, 74, https://doi.org/10.1016/j.jtice.2017.02.005

Knowledge of how the presence of a bend can change the flow patterns of a gas–liquid mixture is important for the design of multiphase flow systems, particularly to prevent burn-out and erosion–corrosion. Burn-out and erosion–corrosion both have seri... Read More about Applications of Artificial Neural Network (ANN) method for performance prediction of the effect of a vertical 90° bend on an air-silicone oil flow.

Estimation of greenhouse gas emissions from spontaneous combustion/fire of coal in opencast mines – Indian context (2016)
Journal Article
Mohalik, N., Lester, E., Lowndes, I., & Singh, V. (in press). Estimation of greenhouse gas emissions from spontaneous combustion/fire of coal in opencast mines – Indian context. Carbon Management, 7(5-6), https://doi.org/10.1080/17583004.2016.1249216

There are a significant number of uncontrolled coal mine fires (primarily due to spontaneous combustion of coal), which are currently burning all over the world. These spontaneous combustion sources emit greenhouse gases (GHGs). A critical review rev... Read More about Estimation of greenhouse gas emissions from spontaneous combustion/fire of coal in opencast mines – Indian context.

Review of experimental methods to determine spontaneous combustion susceptibility of coal – Indian context (2016)
Journal Article
Mohalik, N., Lester, E., & Lowndes, I. (in press). Review of experimental methods to determine spontaneous combustion susceptibility of coal – Indian context. International Journal of Mining, Reclamation and Environment, 31(5), https://doi.org/10.1080/17480930.2016.1232334

This paper presents a critical review of the different techniques developed to investigate the susceptibility of coal to spontaneous combustion and fire. These methods may be sub-classified into the two following areas: (1) Basic coal characterisatio... Read More about Review of experimental methods to determine spontaneous combustion susceptibility of coal – Indian context.

Numerical modeling of oscillating Taylor bubbles (2016)
Journal Article
Ambrose, S., Hargreaves, D. M., & Lowndes, I. (2016). Numerical modeling of oscillating Taylor bubbles. Engineering Applications of Computational Fluid Mechanics, 10(1), 578-598. https://doi.org/10.1080/19942060.2016.1224737

© 2016 The Author(s). In this study, computational fluid dynamics (CFD) modeling is used to simulate Taylor bubbles rising in vertical pipes. Experiments indicate that in large diameter (0.29 m) pipes for an air-water system, the bubbles can rise in... Read More about Numerical modeling of oscillating Taylor bubbles.

Experimental study of the hydrodynamic behaviour of slug flow in a horizontal pipe (2016)
Journal Article
Abdulkadir, M., Hernandez-Perez, V., Lowndes, I., Azzopardi, B., & Sam-Mbomah, E. (2016). Experimental study of the hydrodynamic behaviour of slug flow in a horizontal pipe. Chemical Engineering Science, 156, https://doi.org/10.1016/j.ces.2016.09.015

This paper investigates the unsteady hydrodynamic behaviour of slug flow occurring within an air–silicone oil mixture, within a horizontal 67 mm internal diameter pipe. A series of slug flow regime experiments were performed for a range of injected a... Read More about Experimental study of the hydrodynamic behaviour of slug flow in a horizontal pipe.

Flows of granular material in two-dimensional channels (2015)
Journal Article
Bain, O., Billingham, J., Houston, P., & Lowndes, I. (2015). Flows of granular material in two-dimensional channels. Journal of Engineering Mathematics, https://doi.org/10.1007/s10665-015-9810-1

Secondary cone-type crushing machines are an important part of the aggregate production process. These devices process roughly crushed material into aggregate of greater consistency and homogeneity. We apply a continuum model for granular materials (... Read More about Flows of granular material in two-dimensional channels.

Comparison of experimental and Computational Fluid Dynamics (CFD) studies of slug flow in a vertical riser (2015)
Journal Article
Abdulkadir, M., Hernandez-Perez, V., Lo, S., Lowndes, I., & Azzopardi, B. J. (in press). Comparison of experimental and Computational Fluid Dynamics (CFD) studies of slug flow in a vertical riser. Experimental Thermal and Fluid Science, 68, https://doi.org/10.1016/j.expthermflusci.2015.06.004

This paper presents a comparison of the results obtained from experiments and CFD studies of slug flow in a vertical riser. A series of two experimental investigations were carried out on a 6 m vertical pipe with a 0.067 m internal diameter charged w... Read More about Comparison of experimental and Computational Fluid Dynamics (CFD) studies of slug flow in a vertical riser.

A Review of Primary Mine Ventilation System Optimization (2014)
Journal Article
Acuña, E. I., & Lowndes, I. (2014). A Review of Primary Mine Ventilation System Optimization. Interfaces, 44(2), 163-175. https://doi.org/10.1287/inte.2014.0736

Within the mining industry, a safe and economical mine ventilation system is an essential component of all underground mines. In recent years, research scientists and engineers have explored operations research methods to assist in the design and saf... Read More about A Review of Primary Mine Ventilation System Optimization.

Liquid film thickness behaviour within a large diameter vertical 180° return bend (2013)
Journal Article
Adbulkadir, M., Azzi, A., Zhao, D., Lowndes, I., & Azzopardi, B. (2014). Liquid film thickness behaviour within a large diameter vertical 180° return bend. Chemical Engineering Science, 107, 137-148. https://doi.org/10.1016/j.ces.2013.12.009

Experimental results of liquid film thickness distribution of an air-water mixture flowing through a vertical 180° return bend are reported. Measurements of liquid film thickness were achieved using flush mounted pin and parallel wire probes. The ben... Read More about Liquid film thickness behaviour within a large diameter vertical 180° return bend.

Experimental study of the hydrodynamic behaviour of slug flow in a vertical riser (2013)
Journal Article
Abdulkadir, M., Hernandez-Perez, V., Lowndes, I., Azzopardi, B. J., & Dzomeku, S. (2014). Experimental study of the hydrodynamic behaviour of slug flow in a vertical riser. Chemical Engineering Science, 106, https://doi.org/10.1016/j.ces.2013.11.021

This paper presents an investigation of the hydrodynamics of slug flow in a vertical 67 mm internal diameter riser. The slug flow regime was generated using a multiphase air–silicone oil mixture over a range of gas (0.42