Complex Flow Lab

  • Pattern formation in out-of-equilibrium systems
  • Frictional fluid dynamics, gas/liquid/grain interactions
  • Granular materials, granular flow, segregation
  • Multiphase flows, hydrodynamic flow instabilities
  • Flow in porous media, transforming porous media
  • Fracturing of porous materials, fluid-driven fracturing
  • Complex fluids, granular suspensions, foams, gels, pastes

People

Bjornar Sandnes

SANDNES Bjornar thumb

Associate Professor, Energy Safety Research Institute

College of Engineering, Swansea University (staff profile)

Email: b.sandnes[at]swansea.ac.uk

Tel.: +44 1792 602634

 Dr. David James

Dave_crop

Postdoctoral Research Associate

Email: d.w.james[at]swansea.ac.uk

 

Frictional flow, fluid instabilities, flowback, granular materials

Deren Ozturk

deren2crop

PhD student

Email:

Fracturing, flow in porous media, pattern formation

 

Rumbidzai Nhunduru

Research Associate

Proppant immobilization, surface functionalization

 

MSc and undergraduate students

Abodunrin Akinfenwa

MEng Chemical Engineering

Processing of Discontinuous Shear Thickening (DST) fluids

Clovis Sauzaret

Research internship (ENSTA Bretagne)

Hydrodynamic instabilities, viscous fingering in miscible and immiscible fluids

Roland Malleville

Research internship (ENSTA Bretagne)

Complex fluid flow instabilities, viscous fingering in yield stress fluids, foams

Daniel Adam Victor

MSc Chemical Engineering

3D printing of porous media, flow patterning in porous media

Past members

Dr. Martin Monloubou (now Assistant Professor at ENSTA Bretagne)

Dr. James Matthew Campbell (now postdoc at University of Leeds)

Dr. Benjy Marks (now Lecturer at School of Civil Engineering, University of Sydney)

Past Masters project students

Salman Ibrahim (MEng Chemical Engineering), Rumbidzai Nhunduru (MSc Chemical Engineering), Michael Banwell-Clode (MEng Chemical Engineering), Khaled Alfangary (MSc Chemical Engineering), Linda Cammue (MSc Chemical Engineering), Emily Sharp (MEng Chemical Engineering), Bishwas Gurung (MSc Chemical Engineering), Ibtisam Al-Abri (MSc Chemical Engineering), Juan Torreblanca (Visiting student)

Past summer project students

Ana Clara Gomes, André Machado, Felipe Oliveira Lima, Mariana de Moura, Samanta Bortoni, Clarice de Medeiros, Gabriela Costa, Leonardo Esteves Vaz, Pedro Godinho, Thaís de Sateles, Yuri da Silva, Iuri Michel

About

The Complex Flow lab is led by Bjornar Sandnes, Associate Professor at College of Engineering, Swansea University. The lab is part of the new Energy Safety Research Institute. ESRI is housed on Swansea University’s new world class Bay Campus, and provides an exceptional environment for delivering cutting edge research across energy and energy safety related disciplines with the aim of “building the bridge to a sustainable, affordable and secure energy future.”

esri3

We are also members of the Centre for Complex Fluids Processing and the Systems and Process Engineering Centre at the College of Engineering, Swansea University.

Bjornar Sandnes is an Associate Member of the new Centre of Excellence “Porelab – Porous Media Laboratory” at NTNU/University of Oslo.

baycampus

Swansea University Bay Campus

Publications

 

Eriksen J.A., Toussaint R., Måløy K.J., Flekkøy E.G., Galland O. and Sandnes B. Pattern formation of frictional fingers in a gravitational potential. Phys. Rev. Fluids 3, 013801 (2018). Eriksen_PRFluids2018_preprint

Correas C., Wright K., Andreoli E., Almutairi Z., Sandnes B. and Barron A.R. Hydration induced morphological change on proppant surfaces employing a calcium-silicate cement system. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 527, 197-209 (2018).

Campbell J.M., Ozturk D. and Sandnes B. Gas-driven fracturing of saturated granular mediaPhys. Rev. Appl. 8, 064029 (2017). Campbell_2017_PRAppl_preprint

Marks B., Eriksen J.A., Dumazer G., Sandnes B., and Måløy K.J.  Size segregation of intruders in perpetual granular avalanches. Journal of Fluid Mechanics, 825, 502-514 (2017). (Marks-JFM2017preprint)

Dumazer G., Sandnes B., Ayaz M., Måløy K.J. and Flekkøy E.G. Self-Structuring of Granular material under Capillary Bulldozing. EPJ Web Conf. 140, (2017).

Toussaint R., Sandnes B., Koehn D., Szymczak P. and Aharonov E. (Editors)  EBook: Flow and Transformations in Porous Media, Frontiers Media SA. (2017).

Sandnes B., Koehn D., Toussaint R., Szymczak P. and Aharonov E.  Editorial: Flow and Transformation in Porous Media. Front. Phys. 4:42. doi: 10.3389/fphy.2016.00042 (2016).

Dumazer G., Sandnes B., Ayaz M., Måløy K.J. and Flekkøy E.G. Frictional fluid dynamics and plug formation in multiphase millifluidic flow. Phys. Rev. Lett. 117, 028002 (2016).(Dumazer_PRL028002, Synopsis: Forming Granular Plugs)

Eriksen J.A., Toussaint R., Måløy K.J., Flekkøy E.G. and Sandnes B. Numerical approach to frictional fingers. Phys. Rev. E. 92, 032203 (2015).

Eriksen J.A., Marks B., Sandnes B. and Toussaint R. Bubbles breaking the wall: Two-dimensional stress and stability analysis. Phys. Rev. E. 91, 052204 (2015).

Marks B., Sandnes B., Dumazer G., Eriksen J.A. and Måløy K.J. Compaction of granular material inside confined geometries. Frontiers in Physics 3, 41 (2015).

Oppenheimer J., Rust A.C., Cashman K.V. and  Sandnes B. Gas migration regimes and outgassing in particle-rich suspensions. Frontiers in Physics 3, 60 (2015).

Sandnes B., Flekkøy E.G., Måløy K.J. Stick slip displacement of confined granular mixtures: bubble expansion. Eur. Phys. J. – ST 204, 19 -25 (2012). (pdf: bubbleexpansion)

Kelf T. A., Gosnell M., Sandnes B., Guller A. E., Shekhter A. B.  and Zvyagin A. V. Scar Tissue Classification Using Nonlinear Optical Microscopy and Discriminant Analysis. J. Biophotonics 5 (2), 159 – 167 (2012). (Kelf_2012)

Sandnes B., Flekkøy E.G., Måløy K.J., Eriksen J.A. The shifting shapes of frictional fluids. Rev. Cub. Fis. 29, 1E23 (2012).

Sandnes B., Kelf T.A., Liu H. and Zvyagin A.V. Retroemission by a glass bead monolayer for high-sensitivity, long-range imaging of upconverting phosphors. Optics Letters 36 (15), 3009 – 3011 (2011).

Sandnes B., Flekkøy E.G., Knudsen H.A., Måløy K.J. and See H. Patterns and flow in frictional fluids. Nature Commun. 2:288 doi:10.1038/ncomms1289 (2011).

Sandnes B. Pattern Palette for complex fluid flows. Physics Today 76, June (2011).

Ignatieva N.Y., Zakharkina O.L., Guller A E., Sandnes B., Shekhter A. B., Kamensky V.A., Zvyagin A. V. Laser-induced modification of the patellar ligament tissue: comparative study of structural and optical changes. Las. Med. Sci. 26 (3), 401 – 413 (2011).

Smith B.R., Inglis D.W., Sandnes B., Rabeau J.R., Zvyagin A.V., Gruber D., Noble C.J., Vogel R., Ōsawa E., Plakhotnik T. Five-nanometer diamond with luminescent nitrogen-vacancy defect centers. Small, 5 (14), 1649 – 1653 (2009).

Sandnes B., Knudsen H. A., Flekkøy E. G. and Måløy K.J. Pattern Transitions in a Granular Fluid System, in Powders and Grains 2009, Proceedings of the 6 International Conference on Micromechanics of Granular Media, Golden, Colorado, USA. 1051-1054, Springer (2009).

Knudsen H. A., Sandnes B., Flekkøy E. G. and Måløy K. J. Labyrinth Patterns in Confined and Tilted Granular-Fluid Systems, in Powders and Grains 2009, Proceedings of the 6 International Conference on Micromechanics of Granular Media, Golden, Colorado, USA.1043-1046, Springer (2009).

Sandnes B., Knudsen H. A., Måløy K. J. and Flekkøy E. G. Pattern formation in slowly drained granular-fluid systems, in Traffic And Granular Flow ’07, Paris, France, edited by Cecile Appert-rolland, Springer (2009).

Sandnes B. and Molenaar D. Emerging stripe patterns in drying suspension droplets, in Traffic And Granular Flow ’07, Paris, France, edited by Cecile Appert-rolland, Springer (2009).

Knudsen H. A., Sandnes B., Flekkøy E. G., and Måløy K. J. Modelling and simulation of a maze-forming process in granular-fluid systems, in Traffic And Granular Flow ’07, Paris, edited by Cecile Appert-rolland, Springer, (2009).

Sandnes B. The physics and the chemistry of the heat pad. Am. J. Phys. 76 (6), 546-550 (2008). (Sandnes2008heatpad)

Knudsen H.A, Sandnes B., Måløy K.J. and Flekkøy E.G. Granular labyrinth structures in confined geometries. Phys. Rev. E 77, 021301 (2008). (Knudsen_pre021301)

Sandnes B., Knudsen H.A., Måløy K.J. and Flekkøy E.G. Labyrinth patterns in confined granular-fluid systems.  Phys. Rev. Lett., 99, 3, 038001 (2007). (Sandnes_prl038001)

Meheust Y., Sandnes B., Løvoll G., Måløy K.J., Fossum J.O., da Silva G. J., Mundim M. S. P.,  Droppa Jr. R and Miranda Fonseca D. Using synchrotron X-ray scattering to study the diffusion of water in a weakly-hydrated clay sample. Clay Science, 12, 66, (2006).

Sandnes B. and Rekstad J.. Supercooling salt hydrates: stored enthalpy as a function of temperature. Solar Energy, 80, 616-625 (2006).

Løvoll G., Sandnes B.,  Måløy K. J., Fossum J. O., Fonseca D. M., Meheust Y., da Silva G. J., Mundim M. S. P.and Droppa Jr. R.  Dynamics of water intercalation fronts in a nano-layered synthetic silicate: A synchrotron X-ray scattering study. Physica B: Condensed Matter, 370, 90-98 (2005).

Schakenda J., Rekstad J., Brnic K., Sandnes B. Stand-alone solar heating system controlled and operated by solar cells, in Proceedings of the 10th International Conference on Solar Energy in High Latitudes-NorthSun, (2005).

Sandnes B. Exergy Efficient Production, Storage and Distribution of Solar Energy. Ph.D thesis. UniPub AS, Oslo, ISSN 1501-7710 No 323, (2004).

Sandnes B. and Rekstad J.. A photovoltaic/thermal (PV/T) collector with a polymer absorber plate. Experimental study and analytical model. Solar Energy 72 (1), 63-73 (2002).

Meir M., Rekstad J., Peter M., Henden L. and  Sandnes B.. Determination of the performance of solar systems with the calorimetric method. Solar Energy 73 (3), 195-207 (2002).

Meir M., Rekstad J. and Sandnes B. Roof Integration of Large Collector Areas – Experiences from Norway, in Proceedings of the Industry Workshop at the Experts meeting of the SHC IEA-Task 26 Solar Combisystems, Experts meeting, Delft, The Netherlands (2001).

Meir M., Rekstad J., Sandnes B.. Solar Combisystems for a multi-apartment building – The Klosterenga residence in Oslo, in Proceedings of the Industry Workshop at the Experts meeting of the IEA-SHC task 26-Solar Combisystems, Helsinki. October 9 (2000).

Sandnes B., Mullane R., Rekstad J.B. and Meir M.G. Phase change materials for storage of solar heat, in 3rd ISES-Europe Solar Congress, Copenhagen, Denmark, June 19-22 (2000).

Sandnes B. and Rekstad J. A photovoltaic/thermal (PV/T) collector with a polymer absorber plate; Experimental study and analytical model, in 3rd ISES-Europe Solar Congress, Copenhagen, Denmark, June 19-22 (2000).

Sandnes J., Forbes T., Hansen R. and Sandnes B.. Influence of particle type and faunal activity on mixing of di(2-ethylhexyl)phthalate (DEHP) in natural sediments. Marine Ecology Progress Series 197, 151 – 167 (2000).

Sandnes J., Forbes T., Hansen R., Sandnes B. and Rygg B.. Bioturbation and irrigation in natural sediments, described by animal-community parameters. Marine Ecology Progress Series 197, 169 – 179 (2000).