Martin Sauzade   Graduate Research Assistant   Department of Mechanical Engineering   Stony Brook University   martin.sauzade@stonybrook.edu

Research

My work aims at improving the understanding and practical use of multiphase flows on a microscale level. I investigate such systems by designing, conducting and analyzing numerous microfluidic experiments. I use microfluidic modules, composed of an etched through silicon wafer sandwiched between two glass plates, and a high-speed imaging system to observe the concurrent flow of various fluids at a scale ~ 100 μm. The subsequent image analysis is typically conducted using efficient custom-made ImageJ scripts in combination with theoretical arguments and numerical modeling. The following is a short presentation of my main completed and ongoing projects: The transport and dissolution of gaseous carbon dioxide through high viscosity oils. Using a square microchannel, we recorded the formation, displacement and dissolution of carbon dioxide bubbles through silicon oils of various viscosities. A custom-made ImageJ script then tracks a bubble and extracts its contours as it dissolves in the continuous phase. This allows the calculation of the mass diffusion flux across the interface and the subsequent characterization of the mass transfer as a function of the fluids physicochemical properties.

Carbon dioxide bubbles flowing through high-viscosity silicone oil.

The examination of such flows aims at developing micromodels and at improving our understanding of the mechanisms underlying the enrichment of viscous substances while unraveling the fundamentals of carbon sequestration in porous-like media. Bubble generation at the hydrodynamic focusing section at large capillary number. By carefully observing the formation and subsequent separation of bubbles, this project aims at characterizing the fluids dynamics resulting in the generation of periodic monodisperse trains of bubbles in microgeometries at a high capillary number. Characterization of gaseous carbon dioxide dissolution in low viscosity solvents. This project seeks to assess the dynamics of the dissolution of gaseous carbon dioxide in diverse solvents and to study the correlation between the dissolution process and the physicochemical properties of the solvent. Bubbles in complex microgeometries at large capillary number. The goal of this project is to analyze the motion of gaseous bubbles in a liquid through corrugated capillaries while expanding our understanding of multiphase flow in prototype pore scale models. Flow of small solid particles through circular capillaries. This study tackles the flow of solid, spherical particles through circular capillaries with a particular emphasis on their velocities and positions at a steady state.

• Microfluidic dissolution of CO₂ bubbles in alcohols and alkanes
M. Sauzade and T. Cubaud, in preparation.
• Microbubble formation at large capillary numbers
M. Sauzade and T. Cubaud, in preparation.
• Bubbles in complex microgeometries at large capillary numbers
M. Sauzade and T. Cubaud, To be published in Physics of Fluids (Sept. 2014)
• Initial microfluidic dissolution regime of CO₂ bubbles in viscous oils
M. Sauzade and T. Cubaud, Physical Review E, (R), 2013
• CO₂ dissolution in water using long serpentine microchannels
T. Cubaud, M. Sauzade, and R. Sun, Biomicrofluidics, 2012
• Taylor's Swimming Sheet: Analysis and Improvement of the Perturbation Series
M. Sauzade, G. J. Elfring, E. Lauga, Physica D, 2011
• Flutter of an Elastic Plate in a Channel Flow: Confinement and Finite-size Effects
O. Doaré, M. Sauzade, C. Eloy, J. of Fluid and Structure, 2010

• Ph.D. Candidate, Mechanical Engineering Department, Stony Brook University (2011-2014 [Expected])
  
  • Major in Fluid/Thermal with an emphasis on the science and engineering of small-scale flows
  • Minor in Biomedical Engineering
• M.S. in Engineering with advanced specialization in Automobile & Railway Transportation, ENSTA ParisTech, France (2011)
  
  • Emphases on mechanical engineering, mathematics and material sciences
  • Conducted several projects focused on industrial applications using theory and numerical analysis software in association with students and professionals

• Teaching Assistant, Department of Mechanical Engineering, Stony Brook University (2011-2012)
• Assisted students in Mechanical Engineering Laboratory II (Spring 2012)
• Held weekly recitation and bi-weekly advisory sessions for Introduction to Fluid Mechanics class (Fall 2011)
• Structure & Aeromechanics Engineering Intern, Research and Development Department, European Aeronautic Defence and Space Company (2011, 6 months)
  
• Monitored, in cooperation with a team of engineering staff, a project focused on the integration of a patented concept into an existing structure
• Designed and constructed structural elements using carbon fiber reinforced plastic
• Helped to create and maintained partnerships with companies and manufacturers
• Graduate Research Assistant, Department of Mechanical and Aerospace Engineering, University of California, San Diego (2009-2010)
• Investigated biological phenomena in fluid mechanics using applied mathematics
• Developed a full C/C++ code to resolve a fluid-structure interactions problem
• Conceived a 2D simulation using a finite element method
• Graduate Research Assistant, Department of Mechanical and Aerospace Engineering, University of California, San Diego (2009-2010)
• Developed a code on COMSOL (prev FEMLAB, a finite element analysis, solver and simulation software) to simulate a fluid/structure problem
• Studied the effect of boundary conditions on the behavior of an elastic plate in a channel flow

• M.Sauzade and T.Cubaud. “Early microfluidic dissolution regime of CO₂ bubbles in viscous oils” 66^th Annual Meeting of the American Physical Society's Division of Fluid Dynamics, November 24 - November 26, 2013, Pittsburgh, PA.
  

• M.Sauzade and T.Cubaud. “Microfluidic dissolution of CO₂ bubbles in viscous oils” Northeast Complex Fluids and Soft Matter Workshop, October 25 2013, Rutgers, The State University, NJ.
  

• M.Sauzade and T.Cubaud. “Microfluidic dissolution of CO₂ bubbles in viscous oils” 65^th Annual Meeting of the American Physical Society's Division of Fluid Dynamics, November 18 - November 20, 2012, San Diego, CA.
  

• Gallery of Fluid Motion Award, American Physical Society, 2013