Associate Professor Ryan Armstrong
Associate Professor

Associate Professor Ryan Armstrong

•Ph.D., Oregon State University, Environmental Engineering, Summa Cum Laude (2012)

•B.S., Oregon State University, Bioengineering (2006)

Mineral and Energy Resources Engineering

My area of research is multidisciplinary with aspects of applied mathematics, petroleum engineering, computer science, and fundamental physics. My research integrates these disciplines into a comprehensive framework for digital materials characterisation, porous media imaging and modelling, and multiphase flow studies related to future energy technologies.

Applications include digital rock physics, in situ recovery of minerals, geological storage of hydrogen, recovery of transition fuels, geological storage of CO2, mineral liberation analyses, and machine learning in resources engineering.

Professional Affiliations

Tyree Energy and Technology Building (H6) Level 2, Room 243 Kensington Campus
  • Journal articles | 2023
    Herring AL; Sun C; Armstrong RT; Saadatfar M, 2023, 'Insights into wettability alteration during cyclic scCO2-brine injections in a layered Bentheimer sandstone', International Journal of Greenhouse Gas Control, vol. 122,
    Journal articles | 2022
    Higgs S; Da Wang Y; Sun C; Ennis-King J; Jackson SJ; Armstrong RT; Mostaghimi P, 2022, 'In-situ hydrogen wettability characterisation for underground hydrogen storage', International Journal of Hydrogen Energy, vol. 47, pp. 13062 - 13075,
    Journal articles | 2022
    Jackson SJ; Niu Y; Manoorkar S; Mostaghimi P; Armstrong RT, 2022, 'Deep Learning of Multiresolution X-Ray Micro-Computed-Tomography Images for Multiscale Modeling', Physical Review Applied, vol. 17,
    Journal articles | 2022
    Jing Y; Rabbani A; Armstrong RT; Wang J; Zhang Y; Mostaghimi P, 2022, 'An image-based coal network model for simulating hydro-mechanical gas flow in coal: An application to carbon dioxide geo-sequestration', Journal of Cleaner Production, vol. 379, pp. 134647 - 134647,
    Journal articles | 2020
    Sun C; McClure JE; Mostaghimi P; Herring AL; Shabaninejad M; Berg S; Armstrong RT, 2020, 'Linking continuum-scale state of wetting to pore-scale contact angles in porous media', Journal of Colloid and Interface Science, vol. 561, pp. 173 - 180,
    Journal articles | 2019
    Armstrong RT; McClure JE; Robins V; Liu Z; Arns CH; Schlüter S; Berg S, 2019, 'Porous Media Characterization Using Minkowski Functionals: Theories, Applications and Future Directions', Transport in Porous Media, vol. 130, pp. 305 - 335,
    Journal articles | 2019
    Wang YD; Chung T; Armstrong RT; McClure JE; Mostaghimi P, 2019, 'Computations of permeability of large rock images by dual grid domain decomposition', Advances in Water Resources, vol. 126, pp. 1 - 14,
    Journal articles | 2016
    Armstrong RT; Berg S; Dinariev O; Evseev N; Klemin D; Koroteev D; Safonov S, 2016, 'Modeling of Pore-Scale Two-Phase Phenomena Using Density Functional Hydrodynamics', Transport in Porous Media, vol. 112, pp. 577 - 607,
    Journal articles | 2016
    Berg S; Rücker M; Ott H; Georgiadis A; van der Linde H; Enzmann F; Kersten M; Armstrong RT; de With S; Becker J; Wiegmann A, 2016, 'Connected pathway relative permeability from pore-scale imaging of imbibition', Advances in Water Resources, vol. 90, pp. 24 - 35,
    Journal articles | 2016
    Gerami A; Mostaghimi P; Armstrong RT; Zamani A; Warkiani ME, 2016, 'A microfluidic framework for studying relative permeability in coal', International Journal of Coal Geology, vol. 159, pp. 183 - 193,
    Journal articles | 2016
    Ramandi HL; Mostaghimi P; Armstrong RT; Saadatfar M; Pinczewski WV, 2016, 'Porosity and permeability characterization of coal: a micro-computed tomography study', International Journal of Coal Geology, vol. 154, pp. 57 - 68,
    Journal articles | 2016
    Schlüter S; Berg S; Rücker M; Armstrong RT; Vogel HJ; Hilfer R; Wildenschild D, 2016, 'Pore-scale displacement mechanisms as a source of hysteresis for two-phase flow in porous media', Water Resources Research, vol. 52, pp. 2194 - 2205,
    Journal articles | 2015
    Armstrong RT; Evseev N; Koroteev D; Berg S, 2015, 'Modeling the velocity field during Haines jumps in porous media', Advances in Water Resources, vol. 77, pp. 57 - 68,
    Journal articles | 2015
    Berg S; Armstrong RT; Georgiadis A; Ott H; Schwing A; Neiteler R; Brussee N; Makurat A; Rucker M; Leu L; Wolf M; Khan F; Enzmann F; Kersten M, 2015, 'Onset of Oil Mobilization and Nonwetting-Phase Cluster-Size Distribution', PETROPHYSICS, vol. 56, pp. 15 - 22,
    Journal articles | 2015
    Hilfer R; Armstrong RT; Berg S; Georgiadis A; Ott H, 2015, 'Capillary saturation and desaturation', Physical Review E, vol. 92, pp. 063023 - 063023,
    Journal articles | 2015
    Rücker M; Berg S; Armstrong RT; Georgiadis A; Ott H; Schwing A; Neiteler R; Brussee N; Makurat A; Leu L; Wolf M; Khan F; Enzmann F; Kersten M, 2015, 'From connected pathway flow to ganglion dynamics', Geophysical Research Letters, vol. 42, pp. 3888 - 3894,
    Journal articles | 2014
    Armstrong RT; Georgiadis A; Ott H; Klemin D; Berg S, 2014, 'Critical capillary number: Desaturation studied with fast X-ray computed microtomography', Geophysical Research Letters, vol. 41, pp. 55 - 60,
    Journal articles | 2014
    Armstrong RT; Ott H; Georgiadis A; Rücker M; Schwing A; Berg S, 2014, 'Subsecond pore-scale displacement processes and relaxation dynamics in multiphase flow', Water Resources Research, vol. 50, pp. 9162 - 9176,
    Journal articles | 2014
    Leu L; Berg S; Enzmann F; Armstrong RT; Kersten M, 2014, 'Fast X-ray Micro-Tomography of Multiphase Flow in Berea Sandstone: A Sensitivity Study on Image Processing', Transport in Porous Media, vol. 105, pp. 451 - 469,
    Journal articles | 2013
    Armstrong RT; Berg S, 2013, 'Interfacial velocities and capillary pressure gradients during Haines jumps', Physical Review E, vol. 88, pp. 043010 - 043010,

  • 2022: ARC Future Fellowship, An Advanced Multiphase Model for Geometrical Evolution and Anomalous Flows, FT210100165.
  • 2021: ARC Discovery, Beyond Darcy’s Law: Influence of Wettability on Multiphase Flow in Rocks, DP210102689, Lead CI.
  • 2020: ACARP, Direct Measurements of Effective Diffusion Coefficient of Coal, C29036.
  • 2019: ARC Linkage, In-situ Characterisation of Coal from Coal Seam Gas Developments, LP190100990.
  • 2017: ARC Discovery, Unlock Challenges of Coal Seam Gas: Experimental & Theoretical Developments, DP170104417, Lead CI.
  • 2016: ARC Discovery, Core-scale Geodynamic Rock-typing of Reservoir Rock, DP160104995.

  • 2022: Australian Research Council Future Fellowship
  • 2019: Second Best Paper Award, Society of Core Analysts Symposium
    • Shaw, D., Mostaghimi, P., Hussain, F., and R. T. Armstrong (2019), Insights, trends and challenges associated with measuring coal relative permeability, International Symposium of the Society of Core Analyst, Trondheim, Norway, 27-31 August.
  • 2018: Arc Postgraduate Research Supervisor Award
  • 2016: Best Paper Award, Society of Core Analysts Symposium
    • Armstrong, R. T., McClure, J. E., Berill, M. A., Rücker, M., Schlüter, S., and S. Berg (2016), Flow Regimes During Immiscible Displacement, International Symposium of the Society of Core Analyst, Snowmass, Colorado, USA, 21-26 August. SCA2016-009.
  • 2016: UNSW Staff Excellence Award in Research
  • 2016: UNSW Staff Excellence Award in Teaching
  • 2015: Best Paper Award, Society of Core Analysts Symposium
    • Rücker, M., Berg, S., Armstrong, R. T., Georgiadis, A., Ott, H., Simon, L., Enzmann, F., Kersten, M., and S. de With (2015), The fat of oil clusters during fractional flow – Trajectories in the saturation-capillary number space, International Symposium of the Society of Core Analysts, Newfoundland, Canada, 16-21 August.
  • 2013: Young Professional Best Paper, Society of Core Analyst Symposium
    • Koroteev, D., Dinariev, O., Evseev, N., Klemin, D., Nadeev, A., Safonov, S., Gurpinar, O., Berg, S., van Kruisdijk, C., Armstrong, T. R., Meyers, M., Hathon, L., and H. de Jong, (2013), Direct hydrodynamic simulation of multiphase flow in porous rock, International Symposium of the Society of Core Analysts, Napa Valley, California, 16-19 September.
  • 2012: Best Poster Award, Society of Core Analyst Symposium
    • Armstrong, T. R., Pentland, C. H., Berg, S., Hummel, J., Lichau, D., and L. Bernard, (2012),Estimation of curvature from micro-CT liquid-liquid displacement studies with pore scale resolution, International Symposium of the Society of Core Analyst, Aberdeen, Scotland, UK, 27-30 August 2012.