Current Students and Post-docs

Willian Assis

Supervision
PhD thesis (ongoing): Bed-load instabilities: granular dynamics and interaction with the fluid flow

Selected Publications
  1. Assis, W.R. and Franklin, E.M., Morphodynamics of barchan-barchan interactions investigated at the grain scale. Journal of Geophysical Research: Earth Surface, 126, e2021JF006237, 2021
  2. Assis, W.R. and Franklin, E.M., A comprehensive picture for binary interactions of subaqueous barchans. Geophysical Research Letters, 47, e2020GL089464, 2020
  3. Assis, W.R. and Franklin, E.M., Morphology and grain displacements of two interacting barchans. In: 18th Brazilian Congress of Thermal Sciences and Engineering, 2020, Bento Gonçalves (online). ENCIT2020, Brazil, 2020
  4. Assis, W.R. and Franklin, E.M., Dynamics of barchan fields. In: COBEM2019, Uberlandia, 2019



Video produced by Lauren Lipuma at AGU and uploaded on youtube (with sound, please turn on the speakers!). Complete work: Assis, W.R. and Franklin, E.M., A comprehensive picture for binary interactions of subaqueous barchans. Geophysical Research Letters, 47, e2020GL089464, 2020, https://doi.org/10.1029/2020GL089464

Karlo Rocha

Supervision
PhD thesis (ongoing): Instabilities of a fluidized bed

Selected Publications
  1. Rocha, K.F., Cuñez, F.D. and Franklin, E.M., Determining the granular temperature of gas fluidized beds in narrow tubes. In: 18th Brazilian Congress of Thermal Sciences and Engineering, 2020, Bento Gonçalves (online). ENCIT2020, Brazil, 2020
  2. Rocha, K.F., Cuñez, F.D. and Franklin, E.M., Numerical investigation of gas-solid fluidized beds in narrow tubes. In: COBEM2019, Uberlandia, 2019


Initial conditions of CFD-DEM simulations in a very a narrow tube (ID = 3mm)

CFD-DEM simulations of a gas-solid fluidized bed in a very a narrow tube (ID = 3mm)


Jaime Oswaldo Gonzalez Maya

Supervision
PhD thesis (ongoing): Grain segregation within a bed-load layer

Selected Publications
  1. Gonzalez, J., Cuñez, F.D. and Franklin, E.M., A numerical study of coarse grains segregation within a granular bed. In: 18th Brazilian Congress of Thermal Sciences and Engineering, 2020, Bento Gonçalves (online). ENCIT2020, Brazil, 2020


Elmar Anton Schnorr Filho

Supervision
MSc thesis (ongoing): Hydraulic conveying of coarse grains through a narrow elbow
(co-advisor: Nicolao Cerqueira Lima)

Selected Publications
  1. Schnorr Filho, E. A., Lima, N.C. and Franklin, E.M., Numerical simulation of hydraulic conveying through a narrow elbow. In: 18th Brazilian Congress of Thermal Sciences and Engineering, 2020, Bento Gonçalves (online). ENCIT2020, Brazil, 2020


CFD-DEM simulations of the hydraulic conveying of coarse grains through a narrow elbow

Vinícius Pereira da Silva Oliveira

Supervision
PhD thesis (ongoing): Solid-liquid fluidized beds: fluid flow, grain dynamics and pattern formation

Newbie!

William Denner Pires Fonseca

Supervision
PhD thesis (ongoing): Using PIV and PTV measurements for modeling liquid-liquid flows inside rotating devices

Selected Publications
  1. Perissinotto, R.M., Monte Verde, W., Biazussi, J.L., Bulgarelli, N.A.V., Fonseca, W.D.P., Castro, M.S., Franklin, E.M., Bannwart, A.C. Flow visualization in centrifugal pumps: A review of methods and experimental studies. Journal of Petroleum Science and Engineering, 203, 108582, 2021


Douglas Daniel de Carvalho

Supervision
PhD thesis (ongoing): The motion of an intruder within granular matter

Selected Publications
  1. Publications under preparation (we shall submit an interesting paper soon!)


DEM simulations of an intruder moving within a pack of solid disks (positions and contact chains)

Nicolao Cerqueira Lima

Supervision
Post-doctoral position (ongoing)

Selected Publications
  1. Cuñez, F.D., Lima, N.C. and Franklin, E.M., Motion and clustering of bonded particles in narrow solid-liquid fluidized beds. Physics of Fluids, 33, 023303, 2021 [Editor's Pick]


DEM simulations: SLFBs of trios of spheres (crystallization) [Physics of Fluids, 33, 023303, 2021]

Jimmy Gabriel Alvarez Zambrano

Supervision
MSc thesis (ongoing): Turbulent flow perturbed by bedforms

Newbie!

Layse Barbosa Pôrto

Supervision
MSc thesis (ongoing): Remote sensing of dunes

Newbie!

Former Students

Carlos Alvarez

Supervision
MSc thesis: Gravity-driven granular flows in narrow tubes
PhD thesis: Barchan dunes under turbulent flows

Selected Publications
  1. Alvazez, C.A., Cuñez, F.D. and Franklin, E.M., Growth of barchan dunes of bidispersed granular mixtures. Physics of Fluids, 33, 051705, 2021 [Selected as "Featured"]
  2. Alvarez, C.A, Franklin, E.M.,Force distribution within a barchan dune. Physics of Fluids, 33, 013313, 2021
  3. Alvarez, C.A, Franklin, E.M.,Shape evolution of numerically obtained subaqueous barchan dunes. Physical Review E, v. 101, p. 012905, 2020
  4. Alvarez, C.A, Franklin, E.M., Horns of subaqueous barchan dunes: A study at the grain scale. Physical Review E, v. 100, p. 042904, 2019
  5. Alvarez, C.A, Franklin, E.M., Role of transverse displacements in the formation of subaqueous barchan dunes. Physical Review Letters, v. 121, n. 164503, 2018
  6. Alvarez, C.A, Franklin, E.M., Birth of a subaqueous barchan dune. Physical Review E, v. 96, n. 062906, 2017
  7. Alvarez, C.A, Franklin, E.M., Intermittent gravity-driven flow of grains through narrow pipes. Physica A, v. 465, p. 725-741, 2017
  8. Franklin, E.M., Alvarez Zambrano, C.A., Length scale of density waves in the gravitational flow of fine grains in pipes. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 37, p. 1507-1513, 2015
  9. Alvarez, C.A. and Franklin, E.M., Experimental study on the formation of subaqueous barchan dunes in closed conduit. In: Experimental fluid mechanics 2017- EFM2017, Mikulov, Czech Republic, 2017
  10. Alvarez Zambrano, C.A. and Franklin, E.M., Density waves in the gravitational flow of grains in narrow pipes In: 24th International Congress of Theoretical and Applied Mechanics - ICTAM2016, Montreal, Canada, 2016
Experiments: formation of a barchan dune. Zirconium beads under a turbulent water (left: raw images; right: treated images). Alvarez, C.A. and Franklin, E.M., Phys. Rev. E 96, 062906 (2017)



David Cuñez

Supervision
MSc thesis: Perturbation of a channel flow by a triangular ripple
PhD thesis (ongoing): Fluidized beds in narrow tubes

Selected Publications
  1. Alvazez, C.A., Cuñez, F.D. and Franklin, E.M., Growth of barchan dunes of bidispersed granular mixtures. Physics of Fluids, 33, 051705, 2021 [Selected as "Featured"]
  2. Cuñez, F.D., Lima, N.C. and Franklin, E.M., Motion and clustering of bonded particles in narrow solid-liquid fluidized beds. Physics of Fluids, 33, 023303, 2021 [Editor's Pick]
  3. Cuñez, F.D. and Franklin, E.M., Crystallization and jamming in narrow fluidized beds. Physics of Fluids, 32, 083303, 2020 [Editor's Pick]
  4. Cuñez, F.D. and Franklin, E.M., Mimicking layer inversion in solid-liquid fluidized beds in narrow tubes. Powder Technology, v. 364, p. 994-1008, 2020
  5. Cuñez, F.D. and Franklin, E.M., Plug regime in water fluidized beds in very narrow tubes. Powder Technology, v. 345, p. 234-246, 2019
  6. Cuñez, F.D., Oliveira, G.V.G. and Franklin, E.M., Turbulent channel flow perturbed by triangular ripples. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 40:138, 2018
  7. Cuñez, F.D. and Franklin, E.M., Patterns formed on bi-dispersed solid-liquid fluidized beds in narrow tubes. In: 17th Brazilian Congress of Thermal Sciences and Engineering, 2018, Águas de Lindóia. ENCIT2018, 2018
  8. Cuñez, F.D., Oliveira, G.V.G. and Franklin, E.M., Experimental investigation of turbulent flows over two-dimensional triangular ripples. In: Experimental fluid mechanics 2017- EFM2017, Mikulov, Czech Republic, 2017
  9. Cuñez, F.D., Oliveira, G.V.G. and Franklin, E.M., Experimental investigation of turbulent flows over two-dimensional triangular ripples. In: 9th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics - ExHFT9, Foz do Iguaçu, Brazil, 2017
  10. Cuñez, F.D. and Franklin, E.M., Experiments on the perturbation of a channel flow by a triangular ripple In: 18th International Symposium on the Application of Laser and Imaging Techniques to Fluid Mechanics, Lisbon, Portugal, 2016



Experiments (Fluidized bed: alumina and water in a narrow tube). Cuñez and Franklin, Powder Technol., v. 345, p. 234-246, 2019.

CFD-DEM simulations (Fluidized bed: alumina and water in a narrow tube).Cuñez and Franklin, Powder Technol., v. 345, p. 234-246, 2019.

Bruno Chimetta

Supervision
MSc thesis: Numerical and Asymptotic solutions of the Orr-Sommerfeld equation for Kapitza waves
PhD thesis (ongoing): Instabilitites of a liquid film of a non-Newtonian fluid

Selected Publications
  1. Chimetta, B.P. and Franklin, E.M., An analytical comprehensive solution for the superficial waves appearing in gravity-driven flows of liquid films. Zeitschrift für angewandte Mathematik und Physik, v. 71, 122, 2020
  2. Chimetta, B.P., Hossain, M.Z. and Franklin, E.M., Numerical solution for Kapitza waves on a thin liquid film. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 40:375, 2018
  3. Chimetta, B.P. and Franklin, E.M., Asymptotic analysis for a Carreau-Yasuda fluid driven by gravity over an inclined plane. In: 18th Brazilian Congress of Thermal Sciences and Engineering, 2020, Bento Gonçalves (online). ENCIT2020, Brazil, 2020
  4. Chimetta, B.P. and Franklin, E.M., Asymptotic and numerical solutions of the orr-sommerfeld equation for a thin liquid film on an inclined plane In: IV Journeys in Multiphase Flows - JEM2017, Sao Paulo, Brazil, 2017
  5. Chimetta, B.P. and Franklin, E.M., Numerical solutions of the Orr-Sommerfeld equation for a thin liquid film on an inclined plane In: CNMAC2017 - Congresso Nacional de Matemática Aplicada e Computacional, Sao Jose dos Campos, Brazil, 2017
  6. Chimetta, B.P. and Franklin, E.M., Asymptotic and numerical solutions of the orr-sommerfeld equation for surface waves on an inclined plane In: 16th Brazilian Congress of Thermal Sciences and Engineering - ENCIT2016, Vitória, Brasil, 2016
  7. Chimetta, B.P. and Franklin, E.M., Asymptotic solution of the Orr-Sommerfeld equation for surface waves on an inclined plane In: COBEM2015, Rio de Janeiro, 2015



Stability diagram for a liquid film flowing over an inclined plane

Marcos Penteado

Supervision
MSc thesis: Velocities and displacemente fields of bed load under a turbulent water flow

Selected Publications
  1. Penteado, M.R.M., Franklin, E.M., Velocity fields of a bed-load layer under a turbulent liquid flow. Experimental Thermal and Fluid Science, v. 78, p. 220-228, 2016
  2. Penteado, M.R.M. and Franklin, E.M., Experiments on incipient bed load under a turbulent stream In: 9th International Conference on Multiphase Flow - ICMF2016, Firenze, Italy, 2016
  3. Penteado, M.R.M., Franklin, E.M., An eulerian approach for bed load determination using a high-speed camera. In: Multiphase Flow Journeys - JEM2015, Campinas-SP, 2015
  4. Penteado, M.R.M., Franklin, E.M., Bed load under a turbulent liquid flow. In: ENCIT2014, Belem, 2014
  5. Penteado, M.R.M., Franklin, E.M., The influence of shear stress on bed load. In: CONEM2014, Uberlandia, 2014



Experiments: bed load, slow motion movie. Glass beads under a turbulent water (Penteado and Franklin, Exp. Thermal Fluid Sci., v. 78, p. 220-228, 2016

João Wenzel

Supervision
MSc thesis: The velocity fields of grains over a barchan dune

Selected Publications
  1. Wenzel, J. L. and Franklin, E.M., Velocity fields and particle trajectories for bed load over subaqueous barchan dunes. Granular Matter,v. 21, n.75, 2019
  2. Wenzel, J.L. and Franklin, E.M. Velocity fields of grains over barchan dunes. In: 17th Brazilian Congress of Thermal Sciences and Engineering, 2018, Águas de Lindóia. ENCIT2018, 2018


Experiments: Subaqueous barchan dune (white and black glass beads) Wenzel, J.L.. and Franklin, E.M., Granular Matter, v. 21, n.75, 2019.

Eduar Cardona

Supervision
MSc thesis: The formation of ripples under a turbulent water flow

Selected Publications
  1. Cardona Florez, J.E., Franklin, E.M., The formation and migration of sand ripples in closed conduits: experiments with turbulent water flows. Experimental Thermal and Fluid Science, v. 71, p. 95-102, 2016
  2. Cardona Florez, J.E. and Franklin, E.M, The formation of sand ripples in a turbulent flow. In: 36th IAHR World Congress, The Hague, Netherlands, 2015
  3. Cardona Florez, J.E. and Franklin, E.M, Experiments on the instabilities of a granular bed in a turbulent flow. In: Multiphase Flow Journeys - JEM2015, Campinas-SP, 2015



Experiments: formation of sand ripples. Glass beads under a turbulent water (Cardona Florez and Franklin, Exp. Thermal Fluid Sci., v. 71, p. 95-102, 2016

Gabriel Meletti

Supervision
MSc thesis: Transitions between smooth and rough surfaces in turbulent channel flows

Selected Publications
  1. Oliveira, G.M.M. and Franklin, E.M., Transitions between smooth and rough surfaces in turbulent channel flows for d- and k-type rough elements. Journal of the Brazilian Society of Mechanical Sciences and Engineering, 40:187, 2018
  2. Oliveira, G.M.M. and Franklin, E.M., Boundary layer transition from smooth to rough walls. In: 9th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics - ExHFT9, Foz do Iguaçu, Brazil, 2017
  3. Oliveira, G.M.M. and Franklin, E.M., Experiments on turbulent boundary layer over rough elements In: EPTT2016, Sao Jose dos Campos, Brasil, 2016
  4. Oliveira, G.M.M. and Franklin, E.M., Experiments on turbulent boundary layer over rough elements In: 16th Brazilian Congress of Thermal Sciences and Engineering - ENCIT2016, Vitória, Brasil, 2016



Experiments: PIV for the flow over a corrugated wall

Gabriel Oliveira

Supervision
MSc thesis: The perturbation of a turbulent channel flow by a sequence of ripples

Selected Publications
  1. Cuñez, F.D., Oliveira, G.V.G. and Franklin, E.M., Turbulent channel flow perturbed by triangular ripples. Journal of the Brazilian Society of Mechanical Sciences and Engineering, accepted.
  2. Cuñez, F.D., Oliveira, G.V.G. and Franklin, E.M., Experimental investigation of turbulent flows over two-dimensional triangular ripples. In: Experimental fluid mechanics 2017- EFM2017, Mikulov, Czech Republic, 2017
  3. Cuñez, F.D., Oliveira, G.V.G. and Franklin, E.M., Experimental investigation of turbulent flows over two-dimensional triangular ripples. In: 9th World Conference on Experimental Heat Transfer, Fluid Mechanics and Thermodynamics - ExHFT9, Foz do Iguaçu, Brazil, 2017
  4. Oliveira, G.V.G. and Franklin, E.M., Experimental determination of a turbulent boundary layer perturbed by two low hills In: 16th Brazilian Congress of Thermal Sciences and Engineering - ENCIT2016, Vitória, Brasil, 2016


Experiments: PIV for the flow perturbed by a 2D ripples

Fabíola Figueiredo

Supervision
MSc thesis: The feedback effect of bed load under a water flow

Selected Publications
  1. Franklin, E.M., Figueiredo, F.T., Rosa, E.S.,The feedback effect caused by bed load on a turbulent liquid flow. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 36, p. 725-736, 2014
  2. Figueiredo, F.T., Ayek, G.A., Rosa, E.S., Franklin, E.M., Perturbation of a turbulent liquid flow by the bed-load transport of granular matter In: Cobem2011, Natal, 2011



Experiments: PIV for the flow perturbed by bed load (Franklin et al., J. Braz. Soc. Mech. Sci. Eng., v. 36, p. 725-736, 2014

Guilherme Ayek

Supervision
Undergraduate final project: The perturbation of a turbulent boundary layer by a ripple

Selected Publications
  1. Franklin, E.M., Ayek, G.A.,The perturbation of a turbulent boundary layer by a two-dimensional hill. Journal of the Brazilian Society of Mechanical Sciences and Engineering, v. 35, p. 337-346, 2013
  2. Franklin, E.M., Ayek, G.A., Turbulent flow over a hill inside a closed conduit. In: 8th World Conference on Experimental Heat Transfer, Fluid Mechanics, and Thermodynamics, Lisbon, Portugal, 2013
  3. Franklin, E.M., Ayek, G.A., Experimental measurements of a turbulent flow over a low hill. In: COBEM2013, Ribeirão Preto, 2013



Experiments: PIV for the flow perturbed by a 2D ripple (Franklin and Ayek, J. Braz. Soc. Mech. Sci. Eng., v. 35, p. 337-346, 2013