By Professor Ryan T. Armstrong

Journal articles

Jing Y; Armstrong RT; Mostaghimi P, 2017, 'Rough-walled discrete fracture network modelling for coal characterisation', Fuel, 191, pp. 442 - 453, http://dx.doi.org/10.1016/j.fuel.2016.11.094

Mostaghimi P; Armstrong RT; Gerami A; Hu Y; Jing Y; Kamali F; Liu M; Liu Z; Lu X; Ramandi HL; Zamani A; Zhang Y, 2017, 'Cleat-scale characterisation of coal: An overview', Journal of Natural Gas Science and Engineering, 39, pp. 143 - 160, http://dx.doi.org/10.1016/j.jngse.2017.01.025

Jing Y; Armstrong RT; Mostaghimi P, 2017, 'Digital coal: Generation of fractured cores with microscale features', Fuel, 207, pp. 93 - 101, http://dx.doi.org/10.1016/j.fuel.2017.06.051

Zhang Y; Mostaghimi P; Fogden A; Middleton J; Sheppard A; Armstrong RT, 2017, 'Local diffusion coefficient measurements in shale using dynamic micro-computed tomography', Fuel, 207, pp. 312 - 322, http://dx.doi.org/10.1016/j.fuel.2017.06.050

Ramandi HL; Armstrong RT; Mostaghimi P, 2016, 'Micro-CT image calibration to improve fracture aperture measurement', Case Studies in Nondestructive Testing and Evaluation, 6, pp. 4 - 13, http://dx.doi.org/10.1016/j.csndt.2016.03.001

Armstrong RT; McClure JE; Berrill MA; Rücker M; Schlüter S; Berg S, 2016, 'Beyond Darcy's law: The role of phase topology and ganglion dynamics for two-fluid flow', Physical Review E, 94, http://dx.doi.org/10.1103/PhysRevE.94.043113

Jing Y; Armstrong RT; Lamei Ramandi H; Mostaghimi P, 2016, 'Coal cleat reconstruction using micro-computed tomography imaging', Fuel, 181, pp. 286 - 299, http://dx.doi.org/10.1016/j.fuel.2016.04.127

Unsal E; Broens M; Armstrong RT, 2016, 'Pore Scale Dynamics of Microemulsion Formation', Langmuir, 32, pp. 7096 - 7108, http://dx.doi.org/10.1021/acs.langmuir.6b00821

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, 159, pp. 183 - 193, http://dx.doi.org/10.1016/j.coal.2016.04.002

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, 90, pp. 24 - 35, http://dx.doi.org/10.1016/j.advwatres.2016.01.010

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, 112, pp. 577 - 607, http://dx.doi.org/10.1007/s11242-016-0660-8

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, 52, pp. 2194 - 2205, http://dx.doi.org/10.1002/2015WR018254

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, 154, pp. 57 - 68

Kimbrel EH; Herring AL; Armstrong RT; Lunati I; Bay BK; Wildenschild D, 2015, 'Experimental characterization of nonwetting phase trapping and implications for geologic CO2 sequestration', International Journal of Greenhouse Gas Control, 42, pp. 1 - 15, http://dx.doi.org/10.1016/j.ijggc.2015.07.011

Stacey TR; Armstrong R; Terbrugge PJ, 2015, 'Experience with the development and use of a simple DFN approach over a period of 30 years', Transactions of the Institutions of Mining and Metallurgy Section A Mining Technology, 124, pp. 178 - 187, http://dx.doi.org/10.1179/1743286315Y.0000000020

Armstrong RT; Wildenschild D; Bay BK, 2015, 'The effect of pore morphology on microbial enhanced oil recovery', Journal of Petroleum Science and Engineering, 130, pp. 16 - 25, http://dx.doi.org/10.1016/j.petrol.2015.03.010

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, 42, pp. 3888 - 3894, http://dx.doi.org/10.1002/2015GL064007

Armstrong RT; Evseev N; Koroteev D; Berg S, 2015, 'Modeling the velocity field during Haines jumps in porous media', Advances in Water Resources, 77, pp. 57 - 68, http://dx.doi.org/10.1016/j.advwatres.2015.01.008

Hilfer R; Armstrong RT; Berg S; Georgiadis A; Ott H, 2015, 'Capillary saturation and desaturation', Physical Review E, 92, pp. 063023 - 063023

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, 56, pp. 15 - 22

Lamei Ramandi H; Mostaghimi PM; Armstrong RM; Arns CR; Saadatfar MS; Sok RS; Pinczewski VP; Knackstedt MK, 2015, 'Pore scale imaging and modelling of coal properties', The APPEA Journal, 55, pp. 468 - 468, http://dx.doi.org/10.1071/AJ14103

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, 50, pp. 9162 - 9176, http://dx.doi.org/10.1002/2014WR015858

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, 105, pp. 451 - 469, http://dx.doi.org/10.1007/s11242-014-0378-4

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

Armstrong R; Evseev N; Gurpinar OM; Hathon LA; Klemin DV; Dinariev O; Berg S; Safonov S; Myers M; de Jong H; others , 2013, 'Application of Digital Rock Technology for Chemical EOR Screening', SPE Enhanced Oil Recovery Conference

Armstrong RT; Berg S, 2013, 'Interfacial velocities and capillary pressure gradients during Haines jumps', Physical Review E, 88, pp. 043010 - 043010

Joekar-Niasar V; Doster F; Armstrong RT; Wildenschild D; Celia MA, 2013, 'Trapping and hysteresis in two-phase flow in porous media: A pore-network study', Water Resources Research, 49, pp. 4244 - 4256

Wildenschild D; Rivers ML; Porter ML; Iltis GC; Armstrong RT; Davit Y, 2013, 'Using Synchrotron-Based X-Ray Microtomography and Functional Contrast Agents in Environmental Applications', Soil–Water–Root Processes: Advances in Tomography and Imaging, pp. 1 - 22

Armstrong RT; Wildenschild D, 2012, 'Investigating the pore-scale mechanisms of microbial enhanced oil recovery', Journal of Petroleum Science and Engineering, 94, pp. 155 - 164

Armstrong RT; Porter ML; Wildenschild D, 2012, 'Linking pore-scale interfacial curvature to column-scale capillary pressure', Advances in Water Resources, 46, pp. 55 - 62

Armstrong RT; Wildenschild D, 2012, 'Microbial enhanced oil recovery in fractional-wet systems: A pore-scale investigation', Transport in porous media, 92, pp. 819 - 835

Armstrong RT; Porter ML; Wildenschild D, 2011, 'Analysis of interfacial curvature during drainage and imbibition', AGU Fall Meeting Abstracts, 1, pp. 02 - 02

Armstrong RT; Wildenschild D; others , 2011, 'Decoupling the Mechanisms of Microbial Enhanced Oil Recovery', SPE Annual Technical Conference and Exhibition

Wildenschild D; Armstrong RT; Herring AL; Young IM; William Carey J, 2011, 'Exploring capillary trapping efficiency as a function of interfacial tension, viscosity, and flow rate', Energy Procedia, 4, pp. 4945 - 4952

Iltis GC; Armstrong RT; Jansik DP; Wood BD; Wildenschild D, 2011, 'Imaging biofilm architecture within',

Iltis GC; Armstrong RT; Jansik DP; Wood BD; Wildenschild D, 2011, 'Imaging biofilm architecture within porous media using synchrotron-based X-ray computed microtomography', Water Resources Research, 47

Armstrong R; Ajo-Franklin J, 2011, 'Investigating biomineralization using synchrotron based X-ray computed microtomography', Geophysical Research Letters, 38

Harper E; Wildenschild D; Armstrong RT; Herring AL, 2011, 'Optimization of capillary trapping for application in geological carbon dioxide sequestration', AGU Fall Meeting Abstracts, 1, pp. 1281 - 1281

Herring AL; Wildenschild D; Harper E; Armstrong RT; Carey JW, 2011, 'Quantifying the effects of fluid properties and flow rates on the effectiveness of capillary trapping of CO2 in a Bentheimer sandstone', AGU Fall Meeting Abstracts, 1, pp. 1282 - 1282

Iltis GC; Armstrong RT; Jansik DP; Wood BD; Wildenschild D, 2011, 'Technical Notes-W02601 Imaging biofilm architecture within porous media using synchrotron-based X-ray computed microtomography (doi 10.1029/2010WR009410)', Water Resources Research, 47

Wildenschild D; Armstrong RT, 2011, 'The effects of fractional wettability on microbial enhanced oil recovery', AGU Fall Meeting Abstracts, 1, pp. 1244 - 1244

Molins S; Ajo Franklin JB; Armstrong RT; Nico PS; Silin D, 2010, 'Biogeochemically-driven evolution of pore structures and flow paths: experimental studies and modeling', AGU Fall Meeting Abstracts, 1, pp. 1110 - 1110

Armstrong RT; Wildenschild D, 2010, 'Designer-wet micromodels for studying potential changes in wettability during microbial enhanced oil recovery', AGU Fall Meeting Abstracts, 1, pp. 1061 - 1061

Iltis G; Armstrong RT; Jansik DP; Wood BD; Wildenschild D, 2009, 'Biofilm Growth in Porous Media: Validation of three-dimensional characterization of biofilm growth in packed bead columns', AGU Fall Meeting Abstracts, 1, pp. 08 - 08

Armstrong RT; Ajo Franklin JB, 2009, 'Probing the Dynamics of Biomineralization at the Pore Scale Using X-ray Computed Tomography', AGU Fall Meeting Abstracts, 1, pp. 0976 - 0976

Armstrong RT; Jansik DP; Wildenschild D; Wood BD, 2008, 'Imaging Biofilm Within Porous Media Using Synchrotron Based X-Ray Computed Microtomography', AGU Fall Meeting Abstracts, 1, pp. 03 - 03

Cordes AA; Meloy J; Andersen E; Cleveland M; Barnhart C; Armstrong R, 2005, 'Removal of Ammonia from Semiconductor Wastewater', The 2005 Annual Meeting

Stacey TR; Xianbin Y; Armstrong R; Keyter GJ, 2003, 'New slope stability considerations for deep open pit mines', Journal of the South African Institute of Mining and Metallurgy, 103, pp. 373 - 389

Conference Papers

Lanetc Z; Zhuravljov A; Shapoval A; Armstrong RT; Mostaghimi P, 2022, 'Inclusion of Microporosity in Numerical Simulation of Relative Permeability Curves', in International Petroleum Technology Conference Iptc 2022, http://dx.doi.org/10.2523/IPTC-21975-MS

Alqahtani H; Alqahtani N; Armstrong RT; Mostaghimi P, 2022, 'Segmentation of X-Ray Images of Rocks Using Supervoxels Over-Segmentation', in International Petroleum Technology Conference Iptc 2022, http://dx.doi.org/10.2523/IPTC-22131-MS

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