Find Research Outputs

Search results

• 3D pore system reconstruction using nano-scale 2D SEM images and pore size distribution analysis for intermediate rank coal matrix

  Roslin, A., Pokrajac, D., Wu, K. & Zhou, Y., 1 Sep 2020, In: Fuel. 275, 7 p., 117934.

  Research output: Contribution to journal › Article › peer-review

  • Coal
  • Capillarity
  • Pore size
  • Mercury
  • Scanning electron microscopy
  3 Citations (Scopus)

• A comparative study of turbulence models in a transient channel flow

  Gorji, S., Seddighi, M., Ariyaratne, C., Vardy, A. E., O'Donoghue, T., Pokrajac, D. & He, S., 20 Jan 2014, In: Computers & Fluids. 89, p. 111-123 13 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  40 Citations (Scopus)

  6 Downloads (Pure)

• A coupled surface-subsurface model of overbank flood flow and air entrapment in a permeable floodplain

  Pokrajac, D. & de Lemos, M. J. S., 2014, River Flow 2014: Proceedings of the International Conference on Fluvial Hydraulics. Schleiss, A. J., De Cesare, G., Franca, M. J. & Pfister, M. (eds.). CRC Press/Balkema, p. 591-596 6 p. 75

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • floodplain
  • air
  • flooding
  • overbank flow
  • air movement

• A low-cost, non-hazardous protocol for surface texturing of glass particles

  Ibekwe, A., Tanino, Y. & Pokrajac, D., Dec 2019, In: Tribology Letters. 67, 4, 6 p., 115.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Texturing
  • Barreling
  • grit
  • textures
  • Surface roughness
  2 Citations (Scopus)

  11 Downloads (Pure)

• An efficient and flexible solver for the simulation of the morphodynamics of fast evolving flows on coarse sediment beaches

  Briganti, R., Dodd, N., Kelly, D. & Pokrajac, D., 10 Jun 2012, In: International Journal for Numerical Methods in Fluids. 69, 4, p. 859-877 19 p.

  Research output: Contribution to journal › Article › peer-review

  • Sediment
  • Beaches
  • Sediments
  • Simulation
  • Sediment transport
  29 Citations (Scopus)

• Automated extraction of in situ contact angles from micro-computed tomography images of porous media

  Ibekwe, A., Pokrajac, D. & Tanino, Y., Apr 2020, In: Computers & Geosciences. 137, 12 p., 104425.

  Research output: Contribution to journal › Article › peer-review

  • Contact angle
  • Porous materials
  • Tomography
  • tomography
  • porous medium
  3 Citations (Scopus)

• Characterization of dual porosity system in Suthern Qinshui Basin coal with micro-CT and nano-scale SEM technology

  Roslin, A., Zhou, Y. & Pokrajac, D., 3 Jun 2019.

  Research output: Contribution to conference › Poster › peer-review

  • Coal
  • dual porosity
  • coal
  • Porosity
  • Scanning electron microscopy

• Cleat structure analysis and permeability simulation of coal samples based on micro-computed tomography (micro-CT) and scan electron microscopy (SEM) technology

  Roslin, A., Pokrajac, D. & Zhou, Y., 15 Oct 2019, In: Fuel. 254, 7 p., 115579.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Coal
  • Electron microscopy
  • Coal bed methane
  • Tomography
  • Coal research
  14 Citations (Scopus)

  2 Downloads (Pure)

• Coal matrix pore analysis using nanoscale scanning electron microscopy and direct capillary pressure curve simulation

  Roslin, A., Pokrajac, D. & Zhou, Y., 18 Jun 2020, In: Energy & Fuels. 34, 6, p. 6761-6767 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Coal
  • Capillarity
  • Scanning electron microscopy
  • Flow of fluids
  • Mercury

• Continuously-fed gravity currents propagating over a finite porous substrate

  Venuleo, S., Pokrajac, D., Schleiss, A. J. & Franca, M. J., Dec 2019, In: Physics of Fluids. 31, 12, 126601 .

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • beds
  • Gravitation
  • gravitation
  • Substrates
  • Momentum
  5 Citations (Scopus)

  5 Downloads (Pure)

• Depth-averaged momentum equation for gravity currents with varying density: coefficient in pressure term

  Pokrajac, D., Venuleo, S. & Franca, M. J., 2018, In: Journal of Hydraulic Research. 56, 3, p. 424-430 7 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Momentum
  • Gravitation
  • momentum
  • gravity
  • Pressure gradient
  9 Downloads (Pure)

• Depth-integrated Reynolds-averaged Navier-Stokes equations for shallow flows over rough permeable beds

  Pokrajac, D., Oct 2013, In: Journal of Hydraulic Research. 51, 5, p. 597-600 4 p.

  Research output: Contribution to journal › Article › peer-review

  • free surface flow
  • Navier-Stokes equations
  • Navier Stokes equations
  • momentum
  • Momentum
  4 Citations (Scopus)

• Developing Nanocomposite Gels from Biopolymers for Leakage Control in Oil and Gas Wells

  Yudhowijoyo, A., Rafati, R., Sharifi Haddad, A., Pokrajac, D. & Manzari, M., Sep 2019, Proceedings of SPE Offshore Europe Conference and Exhibition, 3-6 September, Aberdeen, UK. United States: Society of Petroleum Engineers (SPE), 12 p. SPE-195765-MS

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Biopolymers
  • Oil wells
  • Leakage (fluid)
  • nanocomposite
  • oil well
  1 Citation (Scopus)

• Double averaging methodology and double-decomposition: Description of intermediate scales between a fluid particle and a catchment

  Pokrajac, D. & de Lemos, M. J. S., 15 Apr 2014, In: Hydrological Processes. 28, 8, p. 3356-3360 5 p.

  Research output: Contribution to journal › Article › peer-review

• Experimental study of bore-driven swash hydrodynamics on impermeable rough slopes

  Kikkert, G. A., O'Donoghue, T., Pokrajac, D. & Dodd, N., 1 Feb 2012, In: Coastal Engineering. 60, 1, p. 149-166 18 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Hydrodynamics
  • Beaches
  • Gravel
  • Kinetic energy
  • Fluorescence
  45 Citations (Scopus)

  7 Downloads (Pure)

• Experimental study of bore-driven swash hydrodynamics on permeable rough slopes

  Kikkert, G. A., Pokrajac, D., O'Donoghue, T. & Steenhauer, K., Sep 2013, In: Coastal Engineering. 79, p. 42-56 15 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  28 Citations (Scopus)

  7 Downloads (Pure)

• Experimental study of bore-driven swash-swash interactions on an impermeable rough slope

  Chen, B. T., Kikkert, G. A., Pokrajac, D. & Dai, H. J., 1 Feb 2016, In: Coastal Engineering. 108, p. 10-24 15 p.

  Research output: Contribution to journal › Article › peer-review

  • Hydrodynamics
  • Sediment transport
  • Fluids
  • Sediments
  • Dams
  5 Citations (Scopus)

• Fluorescence Spectroscopy of Rhodamine 6G: Concentration and Solvent Effects

  Zehentbauer, F. M., Moretto, C., Stephen, R., Thevar, T., Gilchrist, J. R., Pokrajac, D., Richard, K. L. & Kiefer, J., 5 Mar 2014, In: Spectrochimica Acta. Part A, Molecular and Biomolecular Spectroscopy. 121, p. 147-151 5 p.

  Research output: Contribution to journal › Article › peer-review

  • Fluorescence spectroscopy
  • Dimethyl sulfoxide
  • Fluorescence
  • Dyes
  • Methanol
  90 Citations (Scopus)

• Higher Order Analytical Solutions of Water Table Fluctuations in Coastal Aquifers

  Stojsavljevic, J. D., Jeng, D-S., Seymour, B. R. & Pokrajac, D., 1 Mar 2012, In: Ground Water. 50, 2, p. 301-307 7 p.

  Research output: Contribution to journal › Article › peer-review

  • Aquifers
  • coastal aquifer
  • Groundwater
  • water table
  • Laplace equation
  8 Citations (Scopus)

• Impact of grain roughness on residual nonwetting phase cluster size distribution in packed columns of uniform spheres

  Tanino, Y., Ibekwe, A. & Pokrajac, D., Jul 2020, In: Physical Review. E, Statistical, Nonlinear and Soft Matter Physics. 102, 1, 11 p., 013109.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Roughness
  • roughness
  • Trapping
  • Saturation
  • X-ray Tomography
  1 Citation (Scopus)

  9 Downloads (Pure)

• Implementation of ADER scheme for a bore on an unsaturated permeable slope

  Steenhauer, K., Pokrajac, D. & O'Donoghue, T., 30 Oct 2012, In: International Journal for Numerical Methods in Fluids. 70, 6, p. 682-702 21 p.

  Research output: Contribution to journal › Article › peer-review

  • Infiltration
  • Source Terms
  • Slope
  • Permeability
  • Runge Kutta methods
  5 Citations (Scopus)

• Interaction between oscillatory boundary layer flow and a permeable bed

  Sparrow, K., Pokrajac, D. & Van Der A, D. A., 2013, Proceedings of Coastal Dynamics 2013. p. 1527-1536 10 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • boundary layer
  • sediment wave
  • wave attenuation
  • pressure field
  • velocity profile

• Intra-swash hydrodynamics and sediment flux for dambreak swash on coarse-grained beaches

  O'Donoghue, T., Kikkert, G. A., Pokrajac, D., Dodd, N. & Briganti, R., Jun 2016, In: Coastal Engineering. 112, p. 113-130 18 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Beaches
  • Sediments
  • Hydrodynamics
  • Fluxes
  • Gravel
  13 Citations (Scopus)

  10 Downloads (Pure)

• Lagrangian and Eulerian Description of Bed Load Transport

  Ballio, F., Pokrajac, D., Radice, A. & Abbas Hosseini Sadabadi, S., Feb 2018, In: Journal of Geophysical Research: Earth Surface. 123, 2, p. 384-408 25 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • bedload
  • beds
  • Kinematics
  • Sediments
  • particle motion
  15 Citations (Scopus)

  36 Downloads (Pure)

• Modeling swash-zone hydrodynamics and shear stresses on planar slopes using Reynolds-Averaged Navier-Stokes equations

  Torres-Freyermuth, A., Puleo, J. A. & Pokrajac, D., Feb 2013, In: Journal of Geophysical Research: Oceans. 118, 2, p. 1019-1033 15 p.

  Research output: Contribution to journal › Article › peer-review

  • splashing
  • wave runup
  • Navier-Stokes equations
  • Navier Stokes equations
  • Navier-Stokes equation
  20 Citations (Scopus)

• Near-trapping effect of wave-cylinders interaction on pore water pressure and liquefaction around a cylinder array

  Lin, Z., Pokrajac, D., Guo, Y., Liao, C. & Tang, T., 15 Dec 2020, In: Ocean Engineering. 218, p. 1-18 18 p., 108047.

  Research output: Contribution to journal › Article › peer-review

  • Water
  • Amplification
  • Piles
  • Dynamic response
  1 Citation (Scopus)

• Near-wall behaviour of transient flow in a channel with distributed pyramid roughness

  Seddighi, M., He, S., Pokrajac, D., O'Donoghue, T. & Vardy, A., 1 Jan 2015, 9th International Symposium on Turbulence and Shear Flow Phenomena, TSFP 2015. TSFP-9, Vol. 1.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Surface roughness
  • Turbulence
  • Confined flow
  • Steady flow
  • Turbulent flow

• Non linear shallow water modelling of bore-driven swash: Description of the bottom boundary layer

  Briganti, R., Dodd, N., Pokrajac, D. & O'Donoghue, T., Jun 2011, In: Coastal Engineering. 58, 6, p. 463-477 15 p.

  Research output: Contribution to journal › Article › peer-review
  33 Citations (Scopus)

• Numerical and experimental description of the flow, boundary layer and bed evolution in bore-driven swash on a coarse sediment beach

  Briganti, R., Dodd, N., Pokrajac, D. & O'Donoghue, T., 1 Dec 2012, Proceedings of the 33rd International Conference on Coastal Engineering 2012, ICCE 2012. 10 p.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • Sediment transport
  • Beaches
  • wave runup
  • Boundary layer flow
  • Sediments
  4 Citations (Scopus)

• Numerical model of swash motion and air entrapment within coarse-grained beaches

  Steenhauer, K., Pokrajac, D. & O'Donoghue, T., Jun 2012, In: Coastal Engineering. 64, p. 113-126 14 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Beaches
  • Numerical models
  • Groundwater flow
  • Infiltration
  • Air
  13 Citations (Scopus)

  8 Downloads (Pure)

• Numerical study of the effects of contact angle and viscosity ratio on the dynamics of snap-off through porous media

  Starnoni, M. & Pokrajac, D., 1 Jan 2018, In: Advances in Water Resources. 111, p. 70-85 16 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • porous medium
  • cross section
  • viscosity
  • finite volume method
  • enhanced oil recovery
  6 Citations (Scopus)

  7 Downloads (Pure)

• On the concept of macroscopic capillary pressure in two-phase porous media flow

  Starnoni, M. & Pokrajac, D., Jan 2020, In: Advances in Water Resources. 135, 103487.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • capillary pressure
  • porous medium
  • upscaling
  • fluid
  • two phase flow
  4 Citations (Scopus)

• On the role of infiltration and exfiltration in swash zone boundary layer dynamics

  Pintado-Pati, J. C., Torres-Freyermuth, A., Puleo, J. A. & Pokrajac, D., Sep 2015, In: Journal of Geophysical Research: Oceans. 120, 9, p. 6329-6350 22 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • wave runup
  • infiltration
  • boundary layer
  • bottom stress
  • turbulence
  18 Citations (Scopus)

  6 Downloads (Pure)

• Perforated exit regions for the reduction of micro-pressure waves from tunnels

  Wang, H., Vardy, A. E. & Pokrajac, D., Nov 2015, In: Journal of Wind Engineering and Industrial Aerodynamics. 146, p. 139-149 11 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Tunnels
  • Wavefronts
  10 Citations (Scopus)

  6 Downloads (Pure)

• Perforated tunnel exit regions and micro-pressure waves: geometrical influence

  Wang, H., Vardy, A. E. & Pokrajac, D., Jun 2016, In: Proceedings of the ICE - Engineering and Computational Mechanics. 169, 2, p. 70-85 16 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Wavefronts
  • Tunnels
  • Radiation
  • Wave transmission
  2 Citations (Scopus)

  19 Downloads (Pure)

• Permeability upscaling using cubic law based on the analysis of multi-resolution micro-CT images of intermediate rank coal

  Roslin, A., Pokrajac, D. & Zhou, Y., 19 Sep 2019, In: Energy & Fuels. 33, 9, p. 8215-8221 7 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Coal
  • Tomography
  • Flow of fluids
  • Porosity
  • Geometry
  5 Citations (Scopus)

  7 Downloads (Pure)

• Pressure radiation from a perforated duct exit region

  Wang, H., Vardy, A. E. & Pokrajac, D., 1 Sep 2015, In: Journal of Sound and Vibration. 351, p. 29-42 14 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • radiation pressure
  • ducts
  • Ducts
  • Radiation
  • tunnels
  6 Citations (Scopus)

  6 Downloads (Pure)

• RADINS equations for aerated shallow water flows over rough beds

  Pokrajac, D. & Kikkert, G. A., Oct 2011, In: Journal of Hydraulic Research. 49, 5, p. 630-638 9 p.

  Research output: Contribution to journal › Article › peer-review

  • Navier-Stokes equations
  • Navier Stokes equations
  • water flow
  • shallow water
  • Water
  4 Citations (Scopus)

• Spatial averaging over a variable volume and its application to boundary-layer flows over permeable walls

  Pokrajac, D. & de Lemos, M. J. S., 1 Apr 2015, In: Journal of Hydraulic Engineering. 141, 4, 11 p., 04014087.

  Research output: Contribution to journal › Article › peer-review

  • Boundary layer flow
  • boundary layer
  • Electric commutation
  • Derivatives
  • Open channel flow
  2 Citations (Scopus)

• Spatially averaged flows over mobile rough beds: definitions, averaging theorems, and conservation equations

  Nikora, V., Ballio, F., Coleman, S. & Pokrajac, D., 1 Aug 2013, In: Journal of Hydraulic Engineering. 139, 8, p. 803-811 9 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  36 Citations (Scopus)

  11 Downloads (Pure)

• Subsurface processes generated by bore-driven swash on coarse-grained beaches

  Steenhauer, K., Pokrajac, D., O'Donoghue, T. & Kikkert, G., 2011, In: Journal of Geophysical Research: Oceans. 116, C4, 17 p., C04013.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • wave runup
  • beach
  • atmospheric pressure
  • air
  • wetting front
  25 Citations (Scopus)

  7 Downloads (Pure)

• Surface and subsurface contributions to the build-up of forces on bed particles

  Leonardi, A., Pokrajac, D., Roman, F., Zanello, F. & Armenio, V., 25 Sep 2018, In: Journal of Fluid Mechanics. 851, p. 558-572 14 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • beds
  • free flow
  • porosity
  • Channel flow
  • Large eddy simulation
  11 Citations (Scopus)

  6 Downloads (Pure)

• Temporal acceleration of a turbulent channel flow

  Mathur, A., Gorji, S., He, S., Seddighi, M., Vardy, A., O'Donoghue, T. & Pokrajac, D., Jan 2018, In: Journal of Fluid Mechanics. 835, p. 471-490 20 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Channel flow
  • channel flow
  • Boundary layers
  • Large eddy simulation
  • Laminar flow
  5 Citations (Scopus)

  20 Downloads (Pure)

• The effect of bed permeability on oscillatory boundary layer flow

  Sparrow, K. H., Pokrajac, D. & Van Der A, D. A., 2012, Proceedings of the 33rd International Conference on Coastal Engineering.

  Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

  • friction
  • boundary layer
  • permeability
  • bottom stress
  • particle image velocimetry
  4 Citations (Scopus)

• Turbulence in a transient channel flow with a wall of pyramid roughness

  Seddighi, M., He, S., Pokrajac, D., O'Donoghue, T. & Vardy, A. E., Oct 2015, In: Journal of Fluid Mechanics. 781, p. 226-260 35 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File

  • Channel flow
  • pyramids
  • channel flow
  • Turbulence
  • Surface roughness
  6 Citations (Scopus)

  6 Downloads (Pure)

• Turbulent friction in flows over permeable walls

  Manes, C., Pokrajac, D., Nikora, V. I., Ridolfi, L. & Poggi, D., 2 Feb 2011, In: Geophysical Research Letters. 38, 5 p.

  Research output: Contribution to journal › Article › peer-review

  Open Access

  File
  29 Citations (Scopus)

  7 Downloads (Pure)