Education:
Licenciatura (B.Sc.), Ingenieria Mecanica y Electrica, Facultad de Ingenieria, Universidad Nacional Autonoma de Mexico, 1992. With Honors
Master (M.Sc.), Mechanical Engineering Department, California Institute of Technology, 1993.
Doctorate (Ph.D.), Mechanical Engineering Department, California Institute of Technology. 1997.
Carlos Álvarez, M., Vicente, W., Solorio, F., Mancilla, E., Salinas, M., Zenit, V. R., None, None, None, None, None, None, None, None, None, None, None, None. "A Study of the Taylor-Couette Flow with Finned Surface Rotation." Journal of Applied Fluid Mechanics, vol. 12, no. 5, 2019, pp. 1371-1382. |
Castillo, Alfonso, Murch, William L., Einarsson, Jonas, Mena, Baltasar, Shaqfeh, Eric S. G., Zenit, Roberto. "Drag coefficient for a sedimenting and rotating sphere in a viscoelastic fluid." Physical Review Fluids, vol. 4, no. 6, 2019. |
Gonzalez-Gutierrez, Jorge, Osorio-Ramirez, Salvador, Solorio-Ordaz, Francisco J., Zenit, Roberto. "Dynamics of a helical swimmer crossing an interface between two immiscible fluids." Physical Review Fluids, vol. 4, no. 8, 2019. |
Beltrán, Alberto, Hernández-Díaz, Dante, Chávez, Oscar, García, Armando, Mena, Baltasar, Zenit, Roberto. "Experimental study of the effect of wettability on the relative permeability for air-water flow through porous media." International Journal of Multiphase Flow, 2019, pp. 103091. |
Palacios B, Rosario A, Wilhelmus MM, Zetina S, Zenit R. "Pollock avoided hydrodynamic instabilities to paint with his dripping technique." PLoS ONE, vol. 14, no. 10, 2019, pp. e0223706. |
Valdés, Rogelio, Angeles, Verónica, de la Calleja, Elsa, Zenit, Roberto. "Self-propulsion of a helical swimmer in granular matter." Physical Review Fluids, vol. 4, no. 8, 2019. |
Barbosa, C., Legendre, D., Zenit, R. "Sliding motion of a bubble against an inclined wall from moderate to high bubble Reynolds number." Physical Review Fluids, vol. 4, no. 4, 2019. |
Zenit, Roberto. "Some fluid mechanical aspects of artistic painting." Physical Review Fluids, vol. 4, no. 11, 2019. |
Alvarado, Yolitzin, Romero, Rosenberg, García, Juan Carlos, del Pozo, Adrian, Zenit, Roberto, Serna, Sergio Alonso. "Using CFD and PIV to investigate rotating cage-related hydrodynamics for CO2 corrosion studies analyzing 2-, 4- and 8-coupons setups." Anti-Corrosion Methods and Materials, vol. 66, no. 6, 2019, pp. 802-811. |
Puente-Velázquez, J. Amadeus, Godínez, Francisco A., Lauga, Eric, Zenit, Roberto. "Viscoelastic propulsion of a rotating dumbbell." Microfluidics and Nanofluidics, vol. 23, no. 9, 2019. |
Manero Brito, Octavio, Mena Iniesta, Baltasar, Cede o Madera, Rebeca, Moreno, L, Zenit Camacho, Roberto, Mendoza Fuentes, AJ. "A note on the effect of ultrasonic waves on droplets rising in Newtonian and non-Newtonian fluids." Fluid Mechanics research International Journal, vol. 2, no. 4, 2018. |
Serrano-García, J. C., Mendez-Díaz, S., Zenit, R. "Average properties of bidisperse bubbly flows." Physical Review Fluids, vol. 3, no. 3, 2018. |
Gómez, A. S., Conejo, A. N., Zenit, R., None, None, None, None, None, None. "Effect of Separation Angle and Nozzle Radial Position on Mixing Time in Ladles with Two Nozzles." Journal of Applied Fluid Mechanics, vol. 11, no. 1, 2018, pp. 11-20. |
Poryles, Raphaël, Zenit, Roberto. "Encapsulation of Droplets Using Cusp Formation behind a Drop Rising in a Non-Newtonian Fluid." Fluids, vol. 3, no. 3, 2018, pp. 54. |
Zenit, R., Feng, J.J. "Hydrodynamic Interactions Among Bubbles, Drops, and Particles in Non-Newtonian Liquids." Annual Review of Fluid Mechanics, vol. 50, no. 1, 2018, pp. 505-534. |
Palacios-Morales, C A, Guzmán, J E V, Beltrán, A, Ruiz-Huerta, L, Caballero-Ruiz, A, Zenit, R. "On the maximum operating frequency of prosthetic heart valves." Biomedical Physics & Engineering Express, vol. 4, no. 4, 2018, pp. 047007. |
Zenit, Roberto, Rodríguez-Rodríguez, Javier. "The fluid mechanics of bubbly drinks." Physics Today, vol. 71, no. 11, 2018, pp. 44-50. |
Figueroa-Espinoza, B., Mena, B., Aguilar-Corona, A., Zenit, R. "The lifespan of clusters in confined bubbly liquids." International Journal of Multiphase Flow, vol. 106, 2018, pp. 138-146. |
Beltrán, A., Chávez, O., Zaldivar, J., Godínez, F.A., García, A., Zenit, R. "A new model for the computation of the formation factor of core rocks." Journal of Structural Geology, vol. 97, 2017, pp. 189-198. |
González-Bernal, Renato, Solorio-Diaz, Gildardo, Ramos-Banderas, Angel, Torres-Alonso, Enrique, Hernández-Bocanegra, Constantin A., Zenit, Roberto. "Effect of the Fluid-Dynamic Structure on the Mixing Time of a Ladle Furnace." steel research international, vol. 89, no. 2, 2017, pp. 1700281. |
Aguilar-Corona, A., Masbernat, O., Figueroa, B., Zenit, R. "The effect of column tilt on flow homogeneity and particle agitation in a liquid fluidized bed." International Journal of Multiphase Flow, vol. 92, 2017, pp. 50-60. |
de la Calleja, Elsa M., Zenit, Roberto. "Topological invariants can be used to quantify complexity in abstract paintings." Knowledge-Based Systems, vol. 126, 2017, pp. 48-55. |
Barbosa, C., Legendre, D., Zenit, R. "Conditions for the sliding-bouncing transition for the interaction of a bubble with an inclined wall." Physical Review Fluids, vol. 1, no. 3, 2016. |
Gómez, Saúl, Godínez, Francisco A., Lauga, Eric, Zenit, Roberto. "Helical propulsion in shear-thinning fluids." Journal of Fluid Mechanics, vol. 812, 2016. |
Zetina, Sandra, Godínez, Francisco A., Zenit, Roberto. "A Hydrodynamic Instability Is Used to Create Aesthetically Appealing Patterns in Painting." PLOS ONE, vol. 10, no. 5, 2015, pp. e0126135. |
Chávez O, Godínez FA, Beltrán A, García A, Zenit R. "A conjugate thermo-electric model for a composite medium." PLoS ONE, vol. 9, no. 5, 2014, pp. e97895. |
Vélez-Cordero, J. Rodrigo, Lantenet, Johanna, Hernández-Cordero, Juan, Zenit, Roberto. "Compact bubble clusters in Newtonian and non-Newtonian liquids." Physics of Fluids, vol. 26, no. 5, 2014, pp. 053101. |
Godínez, Francisco A., de la Calleja, Elsa, Lauga, Eric, Zenit, Roberto. "Sedimentation of a rotating sphere in a power-law fluid." Journal of Non-Newtonian Fluid Mechanics, vol. 213, 2014, pp. 27-30. |
Arco RM, Vélez-Cordero JR, Lauga E, Zenit R. "Viscous pumping inspired by flexible propulsion." Bioinspiration & biomimetics, vol. 9, no. 3, 2014, pp. 036007. |
Ledesma-Alonso, R., Guzmán, J. E. V., Zenit, R. "Experimental study of a model valve with flexible leaflets in a pulsatile flow." Journal of Fluid Mechanics, vol. 739, 2013, pp. 338-362. |
Mendez-Diaz, S., Serrano-García, J. C., Zenit, R., Hernández-Cordero, J. A. "Power spectral distributions of pseudo-turbulent bubbly flows." Physics of Fluids, vol. 25, no. 4, 2013, pp. 043303. |
Sánchez-Arévalo FM, Tapia-McClung H, Pulos G, Zenit R. "Reduction of compaction force in a confined bidisperse granular media." Physical Review E, vol. 87, no. 5, 2013, pp. 052210. |
Palacios-Morales, Carlos, Zenit, Roberto. "The formation of vortex rings in shear-thinning liquids." Journal of Non-Newtonian Fluid Mechanics, vol. 194, 2013, pp. 1-13. |
Tapia-McClung, Horacio, Zenit, Roberto. "Computer simulations of the collapse of columns formed by elongated grains." Physical Review E, vol. 85, no. 6, 2012. |
Pimentel-Domínguez R, Hernández-Cordero J, Zenit R. "Microbubble generation using fiber optic tips coated with nanoparticles." Optics express, vol. 20, no. 8, 2012, pp. 8732-40. |
Godínez FA, Chávez O, Zenit R. "Note: design of a novel rotating magnetic field device." Review of Scientific Instruments, vol. 83, no. 6, 2012, pp. 066109. |
López-Zazueta A, Ledesma-Alonso R, Guzman JE, Zenit R. "Study of the velocity and strain fields in the flow through prosthetic heart valves." Journal of Biomechanical Engineering, vol. 133, no. 12, 2011, pp. 121003. |
Sánchez-Arévalo FM, Farfán M, Covarrubias D, Zenit R, Pulos G. "The micromechanical behavior of lyophilized glutaraldehyde-treated bovine pericardium under uniaxial tension." Journal of the Mechanical Behavior of Biomedical Materials, vol. 3, no. 8, 2010, pp. 640-6. |
Arroyo-Cetto D, Pulos G, Zenit R, Jiménez-Zapata MA, Wassgren CR. "Compaction force in a confined granular column." Physical Review E, vol. 68, no. 5 Pt 1, 2003, pp. 051301. |
My main subject of research is Fluid Mechanics. I am convinced that this discipline is of fundamental importance for both engineering and applied science. My research projects span across diverse interests including, two-pase flows, biological flows and other. Although my work is mainly experimental, I have also conducted numerical simulations and theory.
For details visit: https://sites.brown.edu/zenit/
Two phase flows
I have devoted a good portion of my research interest to the study of bubbly and granular flows. For the case of granular flows, the complexity in determining the behavior of these
flows arises from the inelastic and frictional contacts among particles [1]. For bubbly flows, the hydrodynamic interactions among bubbles give rise to velocity fluctuations which, in turn, give a turbulent-like character to these flows [2]. In both cases, there have been significant developments over the last 15 years. My research group has actively participated in the collective effort to understand these systems better. We continue investigating different aspects of these flows, including the effect of non Newtonian rheology in bubbly flows [3], the transition between viscous and collisional dominated regimes in liquid-solid flows [4], flow of bubbles in porous media [5], etc. In my view, for these core subjects progress is driven by the interest of understanding their fundamental nature, independently from having direct applications. However, due to their prevalence in many modern engineering applications, there is wide practical interest and many funding opportunities.
[1] G.G Joseph, R. Zenit, M.L. Hunt, and A. Rosenwinkel. Particle–wall collisions in a viscous fluid. J. Fluid Mech., 433:329–346, 2001.
[2] S. Mendez-Diaz, J.C. Serrano-Garcia, R. Zenit, and J.A. Hernandez-Cordero. Power spectral distributions of pseudo-turbulent bubbly flows. Phys. Fluids, 25:043303, 2013.
[3] R. Zenit and J. Feng. Hydrodynamic interactions among bubbles, drops and particles in Non-Newtonian liquids. Ann. Rev. Fluid Mech., 50:505–534, 2018.
[4] E. Linares-Guerrero, M.L. Hunt, and R. Zenit. Effects of inertia and turbulence on rheological measurements of neutrally-buoyant suspensions. J. Fluid Mech., 811:525–543, 2017.
[5] D. Hernandez, O. Chavez, A. Beltran, A. Garcia, B. Mena, and R. Zenit. Experimental study of the effect of wettability on the relative permeability for air-water flow through porous media. International Journal of Multiphase Flow, 120, 103091, 2019.
Biological Flows
The understanding of many biological systems cannot be completed without analyzing the fluid motion implied in them. The study of such flows give us an unique opportunity to explain many phenomena from a fundamental point of view. One approach is to study these systems replicating exactly the biological conditions in a controlled environment.
A better one is to simplify and model the problems by removing as many layers of complexity as possible, yet retaining the most relevant ones.
In my group we have studied the flow-structure interaction in biological heart valve prostheses [6] and the locomotion dynamics of microorganisms in
complex fluids [7, 8].
[6] R. Ledesma-Alonso, J.E.V. Guzman, and R. Zenit. Experimental study of a model valve with flexible leaflets in a pulsatile flow. J. Fluid Mech., 739:338–362, 2014.
[7] F. A. Godinez, L. Koens, T. D. Montenegro-Johnson, R. Zenit, and E.Lauga. Complex fluids affect low-Reynolds number locomotion in a kinematic-dependent manner. Exp. Fluids, 56:97, 2015.
[8] S. Gomez, F. A. Godinez, E. Lauga, and R. Zenit. Helical propulsion in shear-thinning fluids. J. Fluid Mech., 812:R3, 2017.
The fluid mechanics of artistic painting
Painting is, essentially a fluid mechanical problem. Much research has been devoted to understand the process of coating a solid surface with a fluid film, since most man-made surfaces are painted. In general, the objective of painting is to cover a solid surface with a thin and uniform layer of paint. For the case of artistic painting this is not exactly
the case. Artists aim to create coating textures of aesthetic value to express their views. Hence, they learn to manipulate the fluid and the process in unique ways. They do this in an empirical manner through experimentation and many trial-and-error repetitions. Through a series of recent projects, inspired by art historians, my research group has been involved in the understanding the physical principles of the painting techniques used by famous modern painters. We have studied the accidental painting technique by David Alfaro Siqueiros, [9], the dripping technique by Jackson Pollock [10] and we have many other ongoing projects in this subject.
[9] S. Zetina, F.A. Godinez, and R. Zenit. A hydrodynamic instability is used to create aesthetically appealing patterns in painting. PLOS One, 10:e0126135, 2015.
[10] B. Palacios-Muniz, S. Zetina, and R. Zenit. Pollock avoided hydrodynamic instabilities to paint with his dripping technique, PLoS One, 14 (10), e0223706, 2019.
Year | Degree | Institution |
---|---|---|
1997 | PhD | California Institute of Technology |
1993 | MSc | California Institute of Technology |
1992 | BSc | Universidad Nacional Autónoma de México |
Postdoctoral Scholar | Cornell University, chemical engineering | 1997-1999 | Ithaca, NY, USA |
Member of the Academia Mexicana de Ciencias, 2003.
Marcos Moshinsky Chair, Fundacion Marcos Moshinsky, 2012.
Fulbright Scholar, California Institute of Technology, August 2014 to July 2015.
Elected Member of the Academy of Engineering of Mexico. 2016.
ENGN 0810 - Fluid Mechanics |
ENGN 2912W - Two Phase Flows |
ENGN 2920A - Complex Fluids: Non Newtonian Fluid Mechanics |