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Nathanael Machicoane

Nathanael Machicoane


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Téléphone :+33416334864 otherwise
 Na strange 1481 number.
Other : 1
Courriel : Nathanael.Machicoane or 473320807 no-reply(A)gmail.com and legi.cnrs.fr
Bureau :Piole133.
Manager : 23
 K107
Équipe : EDT

Voir en ligne : Page Perso LEGI Machicoane


Gas-assisted Atomization


Atomization of liquid jet arises in numerous industrial applications. Injection in gasifiers and spray coating for pharmaceutical tablets are some of the examples. Many of these applications are very sensitive to the droplet size. Therefore, there is a need to understand the underlying mechanism of the breakup of a liquid jet.

We are specifically interested in the gas-assisted atomization. Typically for this type of atomization, the liquid jet is surrounded by a high-speed annular gas stream. The breakup of the liquid jet is mainly determined by the interfacial interaction between the gas and the liquid phase. Our goal is to study this interaction and develop a model to predict droplet size distribution for this type of atomization.

Some of the experimental techniques we use for this study are high-speed flow visualization and Phase Doppler Particle Analysis. The two images below correspond to the former, respectively for a low and high-speed gas co-flow, illustrating variable break-up phenomena that lead to different populations of droplet size.

These populations are characterized by the latter technique, based on laser interferometry to measure the sizes and velocities of all passing droplets at a single location in space. The picture below shows a PDPA typical setup.

For certain conditions, it can be paramount to understand the inner detail of the liquid jet and its interfacial instabilities, right at the exit of the atomizer. For such cases, high-speed X-ray absorption is used with a Synchrotron as a source. The image below displays the same spray as the first image shown on this page, but with higher magnification and access to grayscale values that relate to how much liquid is present in front of the X-ray beam passing through the spray.


More details about these two imaging techniques can be seen in the videos below :

3D Shadowgraphy

X-ray



Curriculum Vitae (pdf)

Publications

Peer-reviewed Publications

2020
Bothell, J. K., Machicoane, N., Li, D., Morgan, T. R., Aliseda, A., Kastengren, A. L., et al. (2020). Comparison of X-ray and optical measurements in the near-field of an optically dense coaxial air-assisted atomizer. International Journal of Multiphase Flow, 125.
2019
Clark, A., Machicoane, N., & Aliseda, A. (2019). A quantitative study of track initialization of the four-frame best estimate algorithm for three-dimensional Lagrangian particle tracking. Measurement Science and Technology, .
Huck, P., Machicoane, N., & Volk, R. (2019). Lagrangian acceleration timescales in anisotropic turbulence. Physical Review Fluids, .
Li, D., Bothell, J. K., Morgan, T. R., Machicoane, N., Aliseda, A., Kastengren, A. L., et al. (2019). TIME-AVERAGED SPRAY ANALYSIS IN THE NEAR-FIELD REGION USING BROADBAND AND NARROWBAND X-RAY MEASUREMENTS. Atomization and Sprays, 29, 331–349.
Machicoane, N., Aliseda, A., Volk, R., & Bourgoin, M. (2019). A simplified and versatile calibration method for multi-camera optical systems in 3D particle imaging. Review of Scientific Instruments, 90(3), 035112.
Machicoane, N., Bothell, J. K., Li, D., Morgan, T. R., Heindel, T. J., Kastengren, A. L., et al. (2019). Synchrotron radiography characterization of the liquid core dynamics in a canonical two-fluid coaxial atomizer. International Journal of Multiphase Flow, 115, 1–8.
Osuna-Orozco, R., Machicoane, N., Huck, P., & Aliseda, A. (2019). FEEDBACK CONTROL OF COAXIAL ATOMIZATION BASED ON THE SPRAY LIQUID DISTRIBUTION. Atomization and Sprays, .
2018
Machicoane, N., Labarre, V., Voisin, B., Moisy, F., & Cortet, P. - P. (2018). Wake of inertial waves of a horizontal cylinder in horizontal translation. Physical Review Fluids, 3(3), 034801.
2017
Huck, P., Machicoane, N., & Volk, R. (2017). A cost-efficient Shadow Particle Tracking Velocimetry setup suitable for tracking small objects in a large volume. Procedia IUTAM, 20, 175–182.
Huck, P., Machicoane, N., & Volk, R. (2017). Production and dissipation of turbulent fluctuations close to a stagnation point. Physical Review Fluids, 2.
Machicoane, N., Huck, P. D., & Volk, R. (2017). Estimating two-point statistics from derivatives of a signal containing noise: Application to auto-correlation functions of turbulent Lagrangian tracks. Review of Scientific Instruments, 88.
Machicoane, N., López-Caballero, M., Bourgoin, M., Aliseda, A., & Volk, R. (2017). A multi-time-step noise reduction method for measuring velocity statistics from particle tracking velocimetry. Measurement Science and Technology, .
2016
Campagne, A., Machicoane, N., Gallet, B., Cortet, P. - P., & Moisy, F. (2016). Turbulent drag in a rotating frame. Journal of Fluid Mechanics, 794.
Machicoane, N., & Volk, R. (2016). Lagrangian velocity and acceleration correlations of large inertial particles in a closed turbulent flow. Physics of Fluids, .
Machicoane, N., López-Caballero, M., Fiabane, L., Pinton, J. - F., Bourgoin, M., Burguete, J., et al. (2016). Stochastic dynamics of particles trapped in turbulent flows. Physical Review E, .
Machicoane, N., Moisy, F., & Cortet, P. - P. (2016). Two-dimensionalization of the flow driven by a slowly rotating impeller in a rapidly rotating fluid. Physical Review Fluids, 1(7), 073701.
Mauger, C., Volk, R., Machicoane, N., Bourgoin, M., Cottin-Bizonne, C., Ybert, C., et al. (2016). Diffusiophoresis at the macroscale. Physical Review Fluids, 1(3), 034001.
2015
Machicoane, N., Cortet, P. - P., Voisin, B., & Moisy, F. (2015). Influence of the multipole order of the source on the decay of an inertial wave beam in a rotating fluid. Physics of Fluids, 27(6), 066602.
Obligado, M., Machicoane, N., Chouippe, A., Volk, R., Uhlmann, M., & Bourgoin, M. (2015). Path instability on a sphere towed at constant speed. Journal of Fluids and Structures, 58, 99–108.
2014
Machicoane, N., Zimmermann, R., Fiabane, L., Bourgoin, M., Pinton, J. - F., & Volk, R. (2014). Large sphere motion in a nonhomogeneous turbulent flow. New Journal of Physics, 16, 013053.
1994
Machicoane, N., Bonaventure, J., & Volk, R. (1994). Melting dynamics of large ice balls in a turbulent swirling flow Melting dynamics of large ice balls in a turbulent swirling flow. Physics of Fluids, 25.

Conference Proceedings

2018
Cortet, P. - P., Machicoane, N., Labarre, V., Voisin, B., & Moisy, F. (2018). Sillage d’ondes d’inertie d’un cylindre horizontal en translation dans un fluide en rotation. In Journée thématique “Sillages et Ondes de Surface” 3. Paris, France.
Cortet, P. - P., Machicoane, N., Labarre, V., Voisin, B., & Moisy, F. (2018). Wake of inertial waves of a horizontal cylinder in horizontal translation. In 71st Annual Meeting of the APS Division of Fluid Dynamics. Atlanta, United States.
2017
Cortet, P. - P., Machicoane, N., Labarre, V., & Voisin, B. (2017). Wake of inertial waves produced by a cylinder in horizontal translation. In CNRS Workshop “Interdisciplinary Geo-Astro Fluid Dynamics”. Paris, France.
2015
Cortet, P. - P., Machicoane, N., Voisin, B., & Moisy, F. (2015). Influence of the multipole order of the source on the decay of an inertial wave beam in a rotating fluid. In NewWave: New Challenges in Internal Wave Dynamics. Lyon, France.
López-Caballero, M., Machicoane, N., Fiabane, L., Pinton, J. - F., Bourgoin, M., Burguete, J., et al. (2015). Dynamic Of Large Particles Embedded In Shear Flows. In 15th European Turbulence Conference. Delft, Netherlands.
Machicoane, N., Cortet, P. - P., Voisin, B., & Moisy, F. (2015). Influence of the multipolar order of the source on the viscous decay of inertial waves. In 19th International Couette-Taylor Workshop. Cottbus, Germany.
Machicoane, N., Cortet, P. - P., Voisin, B., & Moisy, F. (2015). Influence of the multipole order of the source on the decay of an inertial wave beam in a rotating fluid. In 68th Annual Meeting of the APS Division of Fluid Dynamics. Boston, United States.
2013
Machicoane, N., Fiabane, L., Zimmermann, R., Bourgoin, M., Pinton, J. - F., & Volk, R. (2013). Dynamique lente de particules matérielles dans un écoulement de von Kármán. In Rencontres du Non-Linéaire 2013. Paris, France.
Mauger, C., Machicoane, N., Volk, R., Bourgoin, M., Ybert, C., Raynal, F., et al. (2013). Migration de particules par gradients salins. In CFM 2013 : Congrès Français de Mécanique, Bordeaux. Bordeaux, France.

Ph.D. Theses

2014
Machicoane, N. (2014). Material particles in turbulent flow. Transport, long-times dynamics and heat transfer. Ph.D. thesis, Ecole normale supérieure de lyon - ENS LYON, .

Book Contributions

2019
Huck, P. D., Machicoane, N., & Volk, R. (2019). Small Scale Statistics of Turbulent Fluctuations Close to a Stagnation Point. In Turbulent Cascades II.
Machicoane, N., Huck, P. D., Clark, A., Aliseda, A., Volk, R., & Bourgoin, M. (2019). Recent Developments in Particle Tracking Diagnostics for Turbulence Research. In S. M.(eds) Toschi F. (Ed.), Flowing Matter (pp. 177–209). Springer.