Dr James Baker

School of Computer Science and Mathematics

Dr Baker is originally from Cheshire, UK. In 2012 he completed an MMath (Master of Mathematics) degree at the University of Oxford, before moving to the University of Manchester to undertake a PhD in Applied Mathematics, graduating in 2016. After a brief period as a research associate at Manchester, he took up a postdoctoral role at the University of Sydney, Australia, where he worked in the School of Civil Engineering for a number of years. He subsequently went on to secure an independent early career research fellowship at Sydney, beginning in 2020. In addition, during 2021 he spent 6 months working as a visiting researcher in the Department of Materials Science at the University of Manchester. Dr Baker joined LJMU's School of Computer Science and Mathematics as a Senior Lecturer in 2022.


Dr Baker's research to-date has been centred around “granular materials”, which includes sand, snow, soil, and many others (not necessarily beginning with ‘s’). He aims to apply fundamental knowledge to diverse industries and applications, with recent projects including quality control of pharmaceutical products, energy saving in the mineral processing industry, and modelling erosion and other environmental processes. His work typically employs a combination of mathematical modelling, numerical simulations and small-scale experiments, with one particular current emphasis being on image analysis of x-ray data and on the development of novel reconstruction algorithms.

Degrees

2016, University of Manchester, United Kingdom, PhD Applied Mathematics
2012, University of Oxford, United Kingdom, MMath Master of Mathematics

Academic appointments

Senior Lecturer, School of Computer Science and Mathematics, Liverpool John Moores University, 2022 - present
Visiting Research Associate, Department of Materials Science, University of Manchester, 2021 - 2021
DECRA Research Fellow, School of Civil Engineering, University of Sydney, 2020 - 2022
Postdoctoral Research Associate, School of Civil Engineering, University of Sydney, 2016 - 2020
Research Associate, Department of Mathematics, University of Manchester, 2016 - 2016

Highlighted publications

Baker J, Guillard F, Marks B, Einav I. 2018. X-ray rheography uncovers planar granular flows despite non-planar walls Nature Communications, 9 DOI Author Url

Viroulet S, Baker JL, Rocha FM, Johnson CG, Kokelaar BP, Gray JMNT. 2018. The kinematics of bidisperse granular roll waves Journal of Fluid Mechanics, 848 :836-875 DOI

Baker JL, Johnson CG, Gray JMNT. 2016. Segregation-induced finger formation in granular free-surface flows Journal of Fluid Mechanics, 809 :168-212 DOI

Journal article

Baker JL, Einav I. 2021. Deep velocimetry: Extracting full velocity distributions from projected images of flowing media Experiments in Fluids, 62 DOI

Maranic Z, Guillard F, Baker J, Einav I, Marks B. 2021. A granular thermometer Granular Matter, 23 DOI

Dulanjalee E, Guillard F, Baker J, Einav I, Marks B. 2020. Measuring grain size fractions of bidisperse granular materials using X-ray radiography Optics Express, 28 :29202-29202 DOI

Baker J. 2020. Scanning geophysical hazards Europhysics News, 51 :14-16 DOI

Luong TH, Baker JL, Einav I. 2020. Spread-out and slow-down of granular flows through model forests Granular Matter, 22 DOI

Viroulet S, Baker JL, Edwards AN, Gray JMNT. 2019. Les instabilités hydrodynamiques dans les écoulements granulaires géophysiques Reflets de la physique, :32-36 DOI

Baker J, Guillard F, Marks B, Einav I. 2018. X-ray rheography uncovers planar granular flows despite non-planar walls Nature Communications, 9 DOI Author Url

Viroulet S, Baker JL, Rocha FM, Johnson CG, Kokelaar BP, Gray JMNT. 2018. The kinematics of bidisperse granular roll waves Journal of Fluid Mechanics, 848 :836-875 DOI

Viroulet S, Baker JL, Edwards AN, Johnson CG, Gjaltema C, Clavel P, Gray JMNT. 2017. Multiple solutions for granular flow over a smooth two-dimensional bump Journal of Fluid Mechanics, 815 :77-116 DOI

Baker JL, Johnson CG, Gray JMNT. 2016. Segregation-induced finger formation in granular free-surface flows Journal of Fluid Mechanics, 809 :168-212 DOI

Baker JL, Barker T, Gray JMNT. 2016. A two-dimensional depth-averaged -rheology for dense granular avalanches Journal of Fluid Mechanics, 787 :367-395 DOI

BAKER J, GRAY N, KOKELAAR P. 2016. Particle Size-Segregation and Spontaneous Levee Formation in Geophysical Granular Flows International Journal of Erosion Control Engineering, 9 :174-178 DOI

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