Dr Bjornar Sandnes

Athro Cyswllt, Chemical Engineering

+44 (0) 1792 602634

b.sandnes@abertawe.ac.uk

409
Pedwerydd Llawr
Adeilad Gogleddol Peirianneg
Campws y Bae

Dolenni Ymchwil

Trosolwg

Mae fy ymchwil yn canolbwyntio ar yr amrywiaeth annisgwyl o batrymau llif a ddarganfyddwn mewn llifoedd amlgam, gronynnog a hylif cymhleth. Rydym yn astudio sut mae patrymau llif ar raddfa fawr yn deillio o gyfuniad o ficrostrwythur yr hylif, a'r grymoedd gludiog, capilarïaidd, ffrithiant a disgyrchiant sy'n gweithredu ar y system. Mae ein canlyniadau'n rhoi esboniadau am ffenomena sy'n digwydd yn naturiol mewn llifau geoffisegol, ac yn helpu i optimeiddio prosesau wedi'u peiriannu megis adfer pridd, adfer olew a nwy, a dal a storio carbon deuocsid.

Darllenwch fwy ar dudalen we'r Labordy Llif Cymhleth.

Uchafbwyntiau Gyrfa

Ymchwil

Ymchwil Peirianneg Gemegol

Complex Fluids Research Group

Cyhoeddiadau

Uchafbwyntiau Ymchwil

Ozturk, D. & Sandnes, B. (2019). A STUDY OF THREE-PHASE FRACTURING IN GRANULAR MEDIA USING HIGH-SPEED IMAGING. Journal of Porous Media, 22(8), 987-1000.
https://doi.org/10.1615/jpormedia.2019026005, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa52472
Olsen, K., Flekkøy, E., Angheluta, L., Campbell, J., Måløy, K., & Sandnes, B. (2019). Geometric universality and anomalous diffusion in frictional fingers. New Journal of Physics, 21(6), 063020
https://doi.org/10.1088/1367-2630/ab25bf, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa50586
Eriksen, J., Toussaint, R., Måløy, K., Flekkøy, E., Galland, O., & Sandnes, B. (2018). Pattern formation of frictional fingers in a gravitational potential. Physical Review Fluids, 3(1)
https://doi.org/10.1103/physrevfluids.3.013801, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa37942
Campbell, J., Ozturk, D., & Sandnes, B. (2017). Gas-Driven Fracturing of Saturated Granular Media. Physical Review Applied, 8(6)
https://doi.org/10.1103/physrevapplied.8.064029, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa36781
Dumazer, G., Sandnes, B., Ayaz, M., Måløy, K., Flekkøy, E., & Sandnes, B. (2017). Self-Structuring of Granular material under Capillary Bulldozing. EPJ Web of Conferences, 140, 09016
https://doi.org/10.1051/epjconf/201714009016, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa34575
Toussaint, R., Sandnes, B., Koehn, D., Szymczak, P., Aharonov, E., & Sandnes, B. (Eds.). (2017). Flow and Transformations in Porous Media. Frontiers Media.
https://doi.org/10.3389/978-2-88945-077-0, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa31881
http://www.frontiersin.org/books/Flow_and_Transformations_in_Porous_Media/1118
Marks, B., Eriksen, J., Dumazer, G., Sandnes, B., Måløy, K., & Sandnes, B. (2017). Size segregation of intruders in perpetual granular avalanches. Journal of Fluid Mechanics, 825, 502-514.
https://doi.org/10.1017/jfm.2017.419, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa34155
Sandnes, B., Koehn, D., Toussaint, R., Szymczak, P., Aharonov, E., & Sandnes, B. (2016). Editorial: Flow and Transformation in Porous Media. Frontiers in Physics, 4
https://doi.org/10.3389/fphy.2016.00042, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa30611
Dumazer, G., Sandnes, B., Ayaz, M., Måløy, K., & Flekkøy, E. (2016). Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow. Physical Review Letters, 117(2)
https://doi.org/10.1103/PhysRevLett.117.028002, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa28884
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.028002
Eriksen, J., Marks, B., Sandnes, B., Toussaint, R., & Sandnes, B. (2015). Bubbles breaking the wall: Two-dimensional stress and stability analysis. Physical Review E, 91(5)
https://doi.org/10.1103/PhysRevE.91.052204, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21343
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.91.052204

Holl Ymchwil

Erthyglau Cylchgronau

Bedding, M., Khatri, N., Nithiarasu, P., Sandnes, B., Egan, P., & Zhao, F. (2024). Data-driven calculation of porous geometry-dependent permeability and fluid-induced wall shear stress within tissue engineering scaffolds. Journal of Engineering Design, 0, 1-15.
https://doi.org/10.1080/09544828.2024.2321224, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa65980
Xiong, Z., Angerman, P., Ellero, M., Sandnes, B., & Seto, R. (2024). Ridge instability in dense suspensions caused by the second normal stress difference. Physics of Fluids, 36(2)
https://doi.org/10.1063/5.0188004, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa65776
http://dx.doi.org/10.1063/5.0188004
Flekkøy, E., Sandnes, B., & Måløy, K. (2023). Shape of a frictional fluid finger. Physical Review Fluids, 8(11)
https://doi.org/10.1103/physrevfluids.8.114302, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa64685
ZHANG, D., Campbell, J., Eriksen, J., Flekkøy, E., Måløy, K., MacMinn, C., & Sandnes, B. (2023). Frictional fluid instabilities shaped by viscous forces. Nature Communications, 14(1)
https://doi.org/10.1038/s41467-023-38648-6, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa63392
http://dx.doi.org/10.1038/s41467-023-38648-6
Campbell, J., Sandnes, B., Flekkøy, E., & Måløy, K. (2022). Dynamics of Dendritic Ice Freezing in Confinement. Crystal Growth and Design, 22(4), 2433-2440.
https://doi.org/10.1021/acs.cgd.1c01488, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa59633
Morgan, M., James, D., Monloubou, M., Olsen, K., & Sandnes, B. (2021). Subdiffusion model for granular discharge in a submerged silo. Physical Review E, 104(4)
https://doi.org/10.1103/physreve.104.044908, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa58506
Morgan, M. & Sandnes, B. (2021). From Darcy to Gaussian to fully mobilised grain flow in a confined channel. EPJ Web of Conferences, 249
https://doi.org/10.1051/epjconf/202124903041, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa60829
Morgan, M., James, D., Barron, A., & Sandnes, B. (2020). Self-similar velocity profiles and mass transport of grains carried by fluid through a confined channel. Physics of Fluids, 32(11), 113309
https://doi.org/10.1063/5.0031155, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa55589
Ozturk, D., Morgan, M., & Sandnes, B. (2020). Flow-to-fracture transition and pattern formation in a discontinuous shear thickening fluid. Communications Physics, 3(1)
https://doi.org/10.1038/s42005-020-0382-7, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa54268
Dumazer, G., Sandnes, B., Måløy, K., & Flekkøy, E. (2020). Capillary bulldozing of sedimented granular material confined in a millifluidic tube. Physical Review Fluids, 5(3)
https://doi.org/10.1103/physrevfluids.5.034309, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa53645
Ozturk, D. & Sandnes, B. (2019). A STUDY OF THREE-PHASE FRACTURING IN GRANULAR MEDIA USING HIGH-SPEED IMAGING. Journal of Porous Media, 22(8), 987-1000.
https://doi.org/10.1615/jpormedia.2019026005, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa52472
Olsen, K., Flekkøy, E., Angheluta, L., Campbell, J., Måløy, K., & Sandnes, B. (2019). Geometric universality and anomalous diffusion in frictional fingers. New Journal of Physics, 21(6), 063020
https://doi.org/10.1088/1367-2630/ab25bf, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa50586
Correas, C., Wright, K., Andreoli, E., Almutairi, Z., Sandnes, B., & Barron, A. (2018). Hydration induced morphological change on proppant surfaces employing a calcium-silicate cement system. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 537, 197-209.
https://doi.org/10.1016/j.colsurfa.2017.10.006, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa35976
Eriksen, J., Toussaint, R., Måløy, K., Flekkøy, E., Galland, O., & Sandnes, B. (2018). Pattern formation of frictional fingers in a gravitational potential. Physical Review Fluids, 3(1)
https://doi.org/10.1103/physrevfluids.3.013801, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa37942
Dumazer, G., Sandnes, B., Ayaz, M., Måløy, K., Flekkøy, E., & Sandnes, B. (2017). Self-Structuring of Granular material under Capillary Bulldozing. EPJ Web of Conferences, 140, 09016
https://doi.org/10.1051/epjconf/201714009016, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa34575
Campbell, J., Ozturk, D., & Sandnes, B. (2017). Gas-Driven Fracturing of Saturated Granular Media. Physical Review Applied, 8(6)
https://doi.org/10.1103/physrevapplied.8.064029, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa36781
Marks, B., Eriksen, J., Dumazer, G., Sandnes, B., Måløy, K., & Sandnes, B. (2017). Size segregation of intruders in perpetual granular avalanches. Journal of Fluid Mechanics, 825, 502-514.
https://doi.org/10.1017/jfm.2017.419, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa34155
Sandnes, B., Koehn, D., Toussaint, R., Szymczak, P., Aharonov, E., & Sandnes, B. (2016). Editorial: Flow and Transformation in Porous Media. Frontiers in Physics, 4
https://doi.org/10.3389/fphy.2016.00042, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa30611
Dumazer, G., Sandnes, B., Ayaz, M., Måløy, K., & Flekkøy, E. (2016). Frictional Fluid Dynamics and Plug Formation in Multiphase Millifluidic Flow. Physical Review Letters, 117(2)
https://doi.org/10.1103/PhysRevLett.117.028002, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa28884
http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.117.028002
Eriksen, J., Toussaint, R., Måløy, K., Flekkøy, E., & Sandnes, B. (2015). Numerical approach to frictional fingers. Physical Review E, 92(3)
https://doi.org/10.1103/PhysRevE.92.032203, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa23521
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.92.032203
Oppenheimer, J., Rust, A., Cashman, K., & Sandnes, B. (2015). Gas migration regimes and outgassing in particle-rich suspensions. Frontiers in Physics, 3
https://doi.org/10.3389/fphy.2015.00060, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa22959
http://journal.frontiersin.org/article/10.3389/fphy.2015.00060/abstract
Marks, B., Sandnes, B., Dumazer, G., Eriksen, J., MÃ¥lÃ¸y, K., & Sandnes, B. (2015). Compaction of granular material inside confined geometries. Frontiers in Physics, 3
https://doi.org/10.3389/fphy.2015.00041, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21489
Eriksen, J., Marks, B., Sandnes, B., Toussaint, R., & Sandnes, B. (2015). Bubbles breaking the wall: Two-dimensional stress and stability analysis. Physical Review E, 91(5)
https://doi.org/10.1103/PhysRevE.91.052204, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21343
http://journals.aps.org/pre/abstract/10.1103/PhysRevE.91.052204
Kelf, T., Gosnell, M., Sandnes, B., Guller, A., Shekhter, A., & Zvyagin, A. (2012). Scar tissue classification using nonlinear optical microscopy and discriminant analysis. Journal of Biophotonics, 5(2), 159-167.
https://doi.org/10.1002/jbio.201100075, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13098
Sandnes, B. (2012). Stick slip displacement of confined granular mixtures: Bubble expansion. The European Physical Journal Special Topics, 204(1), 19
https://doi.org/10.1140/epjst/e2012-01549-7, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13100
Sandnes, B., Flekkoy, E., Maloy, K., & Eriksen, J. (2012). The shifting shapes of frictional fluids. Rev. Cub. Fis., 29(1E23)
SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21736
Sandnes, B., Flekkøy, E., Knudsen, H., Måløy, K., See, H., & Sandnes, B. (2011). Patterns and flow in frictional fluid dynamics. Nature Communications, 2, 288
https://doi.org/10.1038/ncomms1289, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13096
Sandnes, B., Kelf, T., Liu, H., Zvyagin, A., & Sandnes, B. (2011). Retroemission by a glass bead monolayer for high-sensitivity, long-range imaging of upconverting phosphors. Optics Letters, 36(15), 3009-3011.
https://doi.org/10.1364/ol.36.003009, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13099
Sandnes, B. (2011). Laser-induced modification of the patellar ligament tissue: comparative study of structural and optical changes. Lasers in Medical Science, 26(3), 401
https://doi.org/10.1007/s10103-010-0871-0, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13101
Smith, B., Inglis, D., Sandnes, B., Rabeau, J., Zvyagin, A., Gruber, D., Noble, C., Vogel, R., Ōsawa, E., & Plakhotnik, T. (2009). Five-Nanometer Diamond with Luminescent Nitrogen-Vacancy Defect Centers. Small, 5(14), 1649-1653.
https://doi.org/10.1002/smll.200801802, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13097
Sandnes, B. (2008). The physics and the chemistry of the heat pad. American Journal of Physics, 76(6), 546
https://doi.org/10.1119/1.2830533, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13105
Sandnes, B. (2008). Granular labyrinth structures in confined geometries. Physical Review E, 77(2)
https://doi.org/10.1103/physreve.77.021301, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13106
Sandnes, B., Knudsen, H., Måløy, K., & Flekkøy, E. (2007). Labyrinth Patterns in Confined Granular-Fluid Systems. Physical Review Letters, 99(3), 038001
https://doi.org/10.1103/PhysRevLett.99.038001, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21051

Penodau Llyfrau

Sandnes, B., Molenaar, D., & Sandnes, B. (2009). Emerging Stripe Patterns in Drying Suspension Droplets. Traffic and Granular Flow ’07 (pp. 635Springer
https://doi.org/10.1007/978-3-540-77074-9_70, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13102
Knudsen, H., Sandnes, B., Flekkøy, E., Måløy, K., & Sandnes, B. (2009). Modelling and Simulation of a Maze-Forming Process in Granular-Fluid Systems. Traffic and Granular Flow ’07 (pp. 603Springer
https://doi.org/10.1007/978-3-540-77074-9_65, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13103
Sandnes, B., Knudsen, H., Måløy, K., Flekkøy, E., & Sandnes, B. (2009). Pattern Formation in Slowly Drained Granular-Fluid Systems. Traffic and Granular Flow ’07 (pp. 629Springer
https://doi.org/10.1007/978-3-540-77074-9_69, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa13104

Cyfraniadau Cynadleddau

Campbell, J. & Sandnes, B. (2015). Three-phase fracturing in granular material. In Geophysical research Abstracts, EGU2015
SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21346
Oppenheimer, J., Cashman, K., Rust, A., & Sandnes, B. (2014). How do crystal-rich magmas outgas?. In Geophysical Research Abstracts 16, EGU2014
SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21348
Eriksen, J., Sandnes, B., Toussaint, R., Maloy, K., & Flekkoy, E. (2014). Gravity Induced Ordering of Frictional Fingers. In Geophysical Research Abstracts 16, EGU2014-14715.
SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21347
Eriksen, J., Sandnes, B., Maloy, K., & Flekkoy, E. (2013). Modelling stick-slip dynamics in frictional fluids. In Geophysical Research Abstracts 15, EGU2013-14040
SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21350
Eriksen, J., Sandnes, B., Cueto-Felgueroso , L., & Juanes, R. (2013). Stability of Flow in Dense Suspensions. In AGU Fall Meeting, San Fransisco, USA, 2013
SU Repository: https://cronfa.swan.ac.uk/Record/cronfa21349

Llyfrau wedi'u Golygu

Toussaint, R., Sandnes, B., Koehn, D., Szymczak, P., Aharonov, E., & Sandnes, B. (Eds.). (2017). Flow and Transformations in Porous Media. Frontiers Media.
https://doi.org/10.3389/978-2-88945-077-0, SU Repository: https://cronfa.swan.ac.uk/Record/cronfa31881
http://www.frontiersin.org/books/Flow_and_Transformations_in_Porous_Media/1118

Cynnyrch Ymchwil Arall

Sandnes, B. (n.d.) Editorial on the Research Topic "Nonequilibrium Multiphase and Reactive Flows in Porous and Granular Materials"
SU Repository: https://cronfa.swan.ac.uk/Record/cronfa64786

Goruchwyliaeth

An in silico framework for tissue engineering scaffold design and characterisation (cyfredol)

PhD

Goruchwyliwr arall: Dr Feihu Zhao
Frictional Fluid Flow Patterns in Complex Geometries. (cyfredol)

PhD

Goruchwyliwr arall: Dr Daniel Curtis
Effect of viscosity contrast and wetting on frictional fluid flow patterns (dyfarnwyd 2022)

PhD

Goruchwyliwr arall: Prof Chenfeng Li

Modiwlau a Addysgir

EG-003 Applied Engineering

This course provides an introduction to the principles of statics, dynamics and thermo-fluid mechanics relevant to engineering. A practical component will be used to complement taught theory.
EG-169 Environmental Awareness for Engineers

The module focuses on the environmental impacts of human activity, industry, and energy consumption. With the global population soaring past 8 billion in an increasingly industrialised world, human activity is now affecting energy and material balances on a global scale. The next generation of engineers must appreciate the environmental impacts of current technology in order to engineer better solutions for the future.
EGCM40 Pollutant transport by groundwater flows

This module focuses on groundwater flow in aquifers, the transport of pollutants by groundwater flows, and the chemical and biological transformation of pollutants in the subsurface.

Hanes Gyrfa

Uwch Ddarlithydd, Prifysgol Abertawe

2012 - Presennol
Athro Cyswllt, Prifysgol Gwyddoniaeth a Thechnoleg Norwy

2011 - 2011
Cymrodoriaeth, Prifysgol Oslo

2008 - 2011
Ysgolhaig Gwadd, Prifysgol Sydney

2007 - 2011
Cydymaith Anrhydeddus, Prifysgol Macquarie, Sydney

2008 - 2011

Grantiau a Phrosiectau Allweddol

Flowback of propant materials, National Research Network in Advanced Engineering and Materials (NRN) 2015 - 2017
High speed video system, Engineering Instrument Pool 2015
Multiphase fracturing of deformable media” 2014 - 2016

Cyngor Ymchwil Peirianneg a Gwyddorau Ffisegol (EPSRC)
Multiphase frictional fluid flows”, Cyngor Ymchwil Norwy 2012 - 2015
Flow instabilities in frictional fluid dynamics, Y Gymdeithas Frenhinol 2012
Multiphase frictional fluid flows” (CI) 2012 - 2015

RCN
Non-equilibrium pattern formation and rheological responses in complex fluids 2008 - 2011

RCN
Microrheology of nanostructured, soft materials, 2007 - 2011

Cyngor Ymchwil Norwy

Dr Bjornar Sandnes

Rhif ffôn

Cyfeiriad ebost

Youtube Account

Dolenni Ymchwil

Trosolwg

Uchafbwyntiau Gyrfa

Uchafbwyntiau Ymchwil

Holl Ymchwil

An in silico framework for tissue engineering scaffold design and characterisation (cyfredol)

Frictional Fluid Flow Patterns in Complex Geometries. (cyfredol)

Effect of viscosity contrast and wetting on frictional fluid flow patterns (dyfarnwyd 2022)

EG-003 Applied Engineering

EG-169 Environmental Awareness for Engineers

EGCM40 Pollutant transport by groundwater flows

Uwch Ddarlithydd, Prifysgol Abertawe

Athro Cyswllt, Prifysgol Gwyddoniaeth a Thechnoleg Norwy

Cymrodoriaeth, Prifysgol Oslo

Ysgolhaig Gwadd, Prifysgol Sydney

Cydymaith Anrhydeddus, Prifysgol Macquarie, Sydney

Flowback of propant materials, National Research Network in Advanced Engineering and Materials (NRN) 2015 - 2017

High speed video system, Engineering Instrument Pool 2015

Multiphase fracturing of deformable media” 2014 - 2016

Multiphase frictional fluid flows”, Cyngor Ymchwil Norwy 2012 - 2015

Flow instabilities in frictional fluid dynamics, Y Gymdeithas Frenhinol 2012

Multiphase frictional fluid flows” (CI) 2012 - 2015

Non-equilibrium pattern formation and rheological responses in complex fluids 2008 - 2011

Microrheology of nanostructured, soft materials, 2007 - 2011