The University of Queensland

Contextual existence of an optimum through-plane orientation and aspect ratio of a fiber-segment in fibrous air filters

Bhardwaj, Utsav, Ray, Bahni, Das, Dipayan, Mitchell, Travis R., Das, Apurba and Leonardi, Christopher R. (2024). Contextual existence of an optimum through-plane orientation and aspect ratio of a fiber-segment in fibrous air filters. Physics of Fluids, 36 (3) 033348. doi: 10.1063/5.0192443

Numerical investigation of the effect of nanoparticle aggregation on the performance of concentrated photovoltaic-solar thermal collectors with spectral filtering

Mojumder, Juwel C., Mitchell, Travis, Aminossadati, Saiied M. and Leonardi, Christopher R. (2024). Numerical investigation of the effect of nanoparticle aggregation on the performance of concentrated photovoltaic-solar thermal collectors with spectral filtering. Applied Thermal Engineering, 239 121944, 1-17. doi: 10.1016/j.applthermaleng.2023.121944

Assessment of capillary rise in rocks by Time Lapse Digital Imaging

López, Paulo, Mitchel, Travis, Leonardi, Christopher and Onederra, Italo (2023). Assessment of capillary rise in rocks by Time Lapse Digital Imaging. Minerals Engineering, 204 108434, 108434. doi: 10.1016/j.mineng.2023.108434

Investigation of Taylor bubble dynamics in annular conduits with counter-current flow

Liu, Yaxin, Mitchell, Travis, Upchurch, Eric R., Ozbayoglu, Evren M. and Baldino, Silvio (2023). Investigation of Taylor bubble dynamics in annular conduits with counter-current flow. International Journal of Multiphase Flow, 170 104626, 1-16. doi: 10.1016/j.ijmultiphaseflow.2023.104626

Processing of micro-CT images of granodiorite rock samples using convolutional neural networks (CNN), Part II: Semantic segmentation using a 2.5D CNN

Roslin, A., Marsh, M., Provencher, B., Mitchell, T. R., Onederra, I. A. and Leonardi, C. R. (2023). Processing of micro-CT images of granodiorite rock samples using convolutional neural networks (CNN), Part II: Semantic segmentation using a 2.5D CNN. Minerals Engineering, 195 108027, 108027. doi: 10.1016/j.mineng.2023.108027

Processing of micro-CT images of granodiorite rock samples using convolutional neural networks (CNN). Part III: Enhancement of Scanco micro-CT images of granodiorite rocks using a 3D convolutional neural network super-resolution algorithm

Roslin, A., Lebedev, M., Mitchell, T.R., Onederra, I.A. and Leonardi, C.R. (2023). Processing of micro-CT images of granodiorite rock samples using convolutional neural networks (CNN). Part III: Enhancement of Scanco micro-CT images of granodiorite rocks using a 3D convolutional neural network super-resolution algorithm. Minerals Engineering, 195 108028, 1-10. doi: 10.1016/j.mineng.2023.108028

Comparison of free-surface and conservative Allen–Cahn phase-field lattice Boltzmann method

Schwarzmeier, Christoph, Holzer, Markus, Mitchell, Travis, Lehmann, Moritz, Häusl, Fabian and Rüde, Ulrich (2023). Comparison of free-surface and conservative Allen–Cahn phase-field lattice Boltzmann method. Journal of Computational Physics, 473 111753, 1-33. doi: 10.1016/j.jcp.2022.111753

Experimental and numerical investigation into the fracture patterns induced by blast-loading under unconfined and confined conditions

Mitchell, T. R., Wang, Z., Araos, M., Leonardi, C. R., Gefken, P. R. and Onederra, I. A. (2023). Experimental and numerical investigation into the fracture patterns induced by blast-loading under unconfined and confined conditions. Rock Mechanics and Rock Engineering, 56 (4), 2433-2455. doi: 10.1007/s00603-022-03195-x

Quantifying the permeability enhancement from blast-induced microfractures in porphyry rocks using a cumulant lattice Boltzmann method

Mitchell, T. R., Roslin, A., Łaniewski-Wołłk, , Onederra, I. and Leonardi, C. R. (2023). Quantifying the permeability enhancement from blast-induced microfractures in porphyry rocks using a cumulant lattice Boltzmann method. Transport in Porous Media, 146 (3), 587-615. doi: 10.1007/s11242-022-01875-4

Processing of micro-CT images of granodiorite rock samples using convolutional neural networks (CNN), Part I: Super-resolution enhancement using a 3D CNN

Roslin, A., Marsh, M., Piché, N., Provencher, B., Mitchell, T. R., Onederra, I. A. and Leonardi, C. R. (2022). Processing of micro-CT images of granodiorite rock samples using convolutional neural networks (CNN), Part I: Super-resolution enhancement using a 3D CNN. Minerals Engineering, 188 107748, 107748. doi: 10.1016/j.mineng.2022.107748

Efficient implicit methods for wellbore shear failure analysis during drilling and production in coalbeds

Zhong, Ruizhi, Mitchell, Travis, Johnson Jr., Raymond and Leonardi, Christopher (2022). Efficient implicit methods for wellbore shear failure analysis during drilling and production in coalbeds. International Journal of Rock Mechanics and Mining Sciences, 155 105129, 105129. doi: 10.1016/j.ijrmms.2022.105129

Stability assessment of the phase-field lattice Boltzmann model and its application to Taylor bubbles in annular piping geometries

Mitchell, T., Holzer, M., Schwarzmeier, C., Bauer, M., Rüde, U. and Leonardi, C. (2021). Stability assessment of the phase-field lattice Boltzmann model and its application to Taylor bubbles in annular piping geometries. Physics of Fluids, 33 (8) 083325, 1-22. doi: 10.1063/5.0061694

Computational modeling of three-dimensional thermocapillary flow of recalcitrant bubbles using a coupled lattice Boltzmann-finite difference method

Mitchell, T. R., Majidi, M., Rahimian, M. H. and Leonardi, C. R. (2021). Computational modeling of three-dimensional thermocapillary flow of recalcitrant bubbles using a coupled lattice Boltzmann-finite difference method. Physics of Fluids, 33 (3) 032108, 1-23. doi: 10.1063/5.0038171

On the rise characteristics of Taylor bubbles in annular piping

Mitchell, T. and Leonardi, C. (2020). On the rise characteristics of Taylor bubbles in annular piping. International Journal of Multiphase Flow, 130 103376, 103376. doi: 10.1016/j.ijmultiphaseflow.2020.103376

Development of closure relations for the motion of Taylor bubbles in vertical and inclined annular pipes using high-fidelity numerical modeling

Mitchell, T. and Leonardi, C. (2020). Development of closure relations for the motion of Taylor bubbles in vertical and inclined annular pipes using high-fidelity numerical modeling. Physics of Fluids, 32 (6) 063306, 063306. doi: 10.1063/5.0011456

A cascaded phase-field lattice Boltzmann model for the simulation of incompressible, immiscible fluids with high density contrast

Gruszczyński, G., Mitchell, T., Leonardi, C., Łaniewski-Wołłk, Ł. and Barber, T. (2019). A cascaded phase-field lattice Boltzmann model for the simulation of incompressible, immiscible fluids with high density contrast. Computers & Mathematics with Applications, 79 (4), 1049-1071. doi: 10.1016/j.camwa.2019.08.018

Development of a three-dimensional phase-field lattice Boltzmann method for the study of immiscible fluids at high density ratios

Mitchell, T., Leonardi, C. and Fakhari, A. (2018). Development of a three-dimensional phase-field lattice Boltzmann method for the study of immiscible fluids at high density ratios. International Journal of Multiphase Flow, 107, 1-15. doi: 10.1016/j.ijmultiphaseflow.2018.05.004

Improved locality of the phase-field lattice-Boltzmann model for immiscible fluids at high density ratios

Fakhari, Abbas, Mitchell, Travis, Leonardi, Christopher and Bolster, Diogo (2017). Improved locality of the phase-field lattice-Boltzmann model for immiscible fluids at high density ratios. Physical Review E, 96 (5) 053301, 053301. doi: 10.1103/PhysRevE.96.053301

A critical review of flow maps for gas-liquid flows in vertical pipes and annuli

Wu, Benjamin, Firouzi, Mahshid, Mitchell, Travis, Rufford, Thomas E., Leonardi, Christopher and Towler, Brian (2017). A critical review of flow maps for gas-liquid flows in vertical pipes and annuli. Chemical Engineering Journal, 326, 350-377. doi: 10.1016/j.cej.2017.05.135

Micromechanical investigation of fines liberation and transport during coal seam dewatering

Mitchell, Travis R. and Leonardi, Christopher R. (2016). Micromechanical investigation of fines liberation and transport during coal seam dewatering. Journal of Natural Gas Science and Engineering, 35 (A), 1101-1120. doi: 10.1016/j.jngse.2016.09.038

Towards a Statistical Framework to Upscale Fracture Flows with Quantifiable Uncertainty

Mitchell, T., Sashko, D., Łaniewski-Wołłk, Ł. and Leonardi, C. (2023). Towards a Statistical Framework to Upscale Fracture Flows with Quantifiable Uncertainty. European Association of Geoscientists & Engineers. doi: 10.3997/2214-4609.202373012

Analytical and numerical assessment of the influence of bulk coal strength on drilling operations in unconventional coal seam gas wells

Leonardi, C. R., Zhong, R., Mitchell, T. R., Chen, Z., Johnson, R. L., O'Hagan, D. and Flottmann, T. (2021). Analytical and numerical assessment of the influence of bulk coal strength on drilling operations in unconventional coal seam gas wells. 55th US Rock Mechanics/Geomechanics Symposium, Houston, TX USA, 20-23 June 2021. Alexandria, VA USA: American Rock Mechanics Association.

Numerical evaluation of bulk geomechanical properties of fractured coal with changing net effective stress conditions

Mitchell, Travis R., Zhong, Ruizhi, Johnson, Ray and Leonardi, Christopher R. (2021). Numerical evaluation of bulk geomechanical properties of fractured coal with changing net effective stress conditions. SPE/AAPG/SEG Asia Pacific Unconventional Resources Technology Conference, Virtual, 16-18 November 2021. Tulsa, OK, United States: Unconventional Resources Technology Conference. doi: 10.15530/ap-urtec-2021-208346

Wellbore stability analysis of horizontal drilling in Bowen and Surat coal seam gas wells

Zhong, Ruizhi, Leonardi, Christopher R., Mitchell, Travis R. and Johnson, Ray L. (2021). Wellbore stability analysis of horizontal drilling in Bowen and Surat coal seam gas wells. SPE/AAPG/SEG Asia Pacific Unconventional Resources Technology Conference, Virtual, 16-18 November 2021. Tulsa, OK, United States: Unconventional Resources Technology Conference. doi: 10.15530/ap-urtec-2021-208399

Analysis of Taylor bubble dynamics via high-fidelity numerical modelling

Mitchell, Travis and Leonardi, Christopher (2020). Analysis of Taylor bubble dynamics via high-fidelity numerical modelling. 22nd Australasian Fluid Mechanics Conference AFMC2020, Brisbane, Australia, 7-10 December 2020. Brisbane, Australia: The University of Queensland. doi: 10.14264/4181c21

Lattice Boltzmann modelling of a regularised Kuang-Luo fluid in a carotid artery

Hill, Bryce, Mitchell, Travis and Leonardi, Christopher (2020). Lattice Boltzmann modelling of a regularised Kuang-Luo fluid in a carotid artery. 22nd Australasian Fluid Mechanics Conference AFMC2020, Brisbane, QLD Australia, 7-10 December 2020. Brisbane, QLD Australia: The University of Queensland. doi: 10.14264/cf18781

Development and Evaluation of Multiphase Closure Models used in the Simulation of Unconventional Wellbore Dynamics

Mitchell, Travis, Hill, Bryce, Firouzi, Mahshid and Leonardi, Christopher (2019). Development and Evaluation of Multiphase Closure Models used in the Simulation of Unconventional Wellbore Dynamics. Unconventional Resources Technology Conference (URTEC), Brisbane, QLD Australia, 18 - 19 November 2019. Tulsa, OK United States: Unconventional Resources Technology Conference. doi: 10.15530/ap-urtec-2019-198239

Towards closure relations for the rise velocity of Taylor bubbles in annular piping using phase-field lattice Boltzmann techniques

Mitchell, Travis, Leonardi, Chris, Firouzi, Mahshid and Towler, Brian (2018). Towards closure relations for the rise velocity of Taylor bubbles in annular piping using phase-field lattice Boltzmann techniques. 21st Australasian Fluid Mechanics Conference, Adelaide, SA, Australia, 10 - 13 December 2018. Hawthorn, VIC, Australia: Australasian Fluid Mechanics Society.

Characterising the Behaviour of Hydraulic Fracturing Fluids via Direct Numerical Simulation

Leonardi, Christopher , Regulski, Wojciech, McCullough, Jon W. S., Wang, Duo, Mitchell, Travis R., Jones, Bruce D. and Williams, John R. (2016). Characterising the Behaviour of Hydraulic Fracturing Fluids via Direct Numerical Simulation. SPE Asia Pacific Oil & Gas Conference and Exhibition, Perth, Australia, 25-27 October 2016. Richardson, TX, United States: Society of Petroleum Engineers. doi: 10.2118/182458-MS

Targeted conditioning and extraction

Onederra, Italo, Leonardi, Christopher, Mitchell, Travis, Roslin, Alexandra, Araos, Miguel, Wang, Zi, Lopez, Paulo and Salazar, Felipe (2021). Targeted conditioning and extraction. Brisbane, QLD Australia: The University of Queensland.

Development of a multiphase lattice Boltzmann model for high-density and viscosity ratio flows in unconventional gas wells

Mitchell, Travis (2019). Development of a multiphase lattice Boltzmann model for high-density and viscosity ratio flows in unconventional gas wells. PhD Thesis, School of Mechanical and Mining Engineering, The University of Queensland. doi: 10.14264/uql.2020.78