EHD-MGC-miembros

Nexts Events:

17/3/18: Seminario...

Keywords:

CO2 capture, Ca-based synthetic materials, fine cohesive powders, Ac electrokinetics, corona discharge, AC electric-field-induced, fine aluminum powders, Electrohydrodynamics, dielectrophoresis, dielectric liquid, axial electric-fields, Flow regimes, fine cohesive powders, nonuniform ac electric fields, electrolytes, microelectrodes, Jamming threshold, capillary jets, Normal-mode, Numerical modelling, electro-thermo-convection, dielectric liquid layer, Trichel pulses, thermal-gradient, instability, Plasma chemical, negative DC corona, charge diffusion, finite-amplitude electroconvection, Self-diffusion, gas-fluidized bed

Alberto Pérez Izquierdo

Professor - Head of the group

e-mail: alberto@us.es

Education: Doctor in Physics, 1989, University of Seville.
Doctoral thesis: Contribution to the study of electroconvection induced by unipolar injection in the presence or absence of a thermal gradient. Supervisor: Antonio Castellanos Mata.

Main scientific results:

Mathematical analysis of the comparative influence of coulombian diffusion and repulsion on charge distribution in electroconvection produced by unipolar injection.

Study of the chaotic distribution of charge produced by a laminar flow, through the lamellar chaotic loading mixture, in the electroconvection produced by unipolar injection.

Study of the dynamics of a conductive ball immersed in a little conductor fluid. The ball experiences regular pots when subjected to a constant electric field. When an alternating component is added to the field, a bifurcation of period splitting is produced.

Experimental study of the electrohydrodynamic instabilities produced on a thin layer of liquid little conductor by the injection of load by corona effect from a point to high tension.

Design of a technique capable of measuring the electrophoretic mobility of colloidal particles in low conductive media. This technique has been used with suspensions of PMMA particles of 10 microns up to 30% concentration by volume. It is found that mobility does not vary with concentration.

Numerical study of instabilities and electro-thermo-hydrodynamic flows.

Instability due to unipolar injection in a rigid wall enclosure.

Main scientific publications:

Role of charge diffusion in finite amplitude electroconvection. Phys. Rev. A. Vol. 40 No. 10, pp. 5844-5855 (1989).

Authors: Pérez Izquierdo, Alberto Tomás; Castellanos Mata, Antonio.

Laminar chaotic transport of charge in finite amplitude electroconvection. Phys. Rev. A. Vol. 44 No. 10, pp. 6659-6664 (1991).

Authors: Pérez Izquierdo, Alberto Tomás; Castellanos Mata, Antonio.

The charged bouncing ball: An experimental model for period-doubling bifurcation. Europhys. Lett. Vol. 37, pp. 541-546 (1997).

Authors: Soria del Hoyo, Carlos; Ramos Reyes, Antonio and Pérez Izquierdo, Alberto Tomás.

Rose-window instability in low conducting liquids. Journal of Electrostatics Vol. 40-41, pp. 141-146 (1997).

Authors: Pérez Izquierdo, Alberto Tomás.

Design of a conductivity meter for highly insulating liquids. Journal of Physics D: Applied Physics. Vol. 40, pp. 1477-1482 (2007).

Authors: Medrano Muñoz, Manuel; Pérez Izquierdo, Alberto Tomás and Soria del Hoyo, Carlos.

Electrophoretic Mobility of Silica Particles in a Mixture of Toluene and Ethanol At Different Particle Concentrations. Langmuir. Vol. 25. Núm. 20. Pag. 12034-12039 (2009).

Authors: Medrano Muñoz, Manuel, Pérez Izquierdo, Alberto Tomás, Lobry, Laurent, Peters, François.

Numerical Modelling of Finite-Amplitude Electro-Thermo-Convection in a Dielectric Liquid Layer Subjected to Both Unipolar Injection and Temperature Gradient. Journal of Fluid Mechanics. Vol. 658. Pag. 279-293 (2010).

Authors: Traore, Philippe, Perez Izquierdo, Alberto Tomas, Koulova Nenova, Dantchi, Romat, Hubert.

Electrohydrodynamic linear stability analysis of dielectric liquids subjected to unipolar injection in a rectangular enclosure with rigid sidewalls. Journal of Fluid Mechanics. Vol. 758. Pag. 586-602. 10.1017/jfm.2014.537 (2014).

Authors: Pérez Izquierdo, Alberto Tomás, Vázquez González, Pedro Ángel, Wu, Jian, Traoré, Philippe.

Charge injection enhanced natural convection heat transfer in horizontal concentric annuli filled with a dielectric liquid. International Journal of Heat and Mass Transfer. Vol. 92. Pag. 139-148. dx.doi.org/10.1016/j.ijheatmasstransfer.2015.08.088 (2016).

Authors: Wu, Jian, Traoré, Philippe, Zhang, Mengqi, Pérez Izquierdo, Alberto Tomás, Vázquez González, Pedro Ángel.

Patents:

P200800749

Description: Device and procedure to measure the electroconductivity of highly insulating liquids.

Participants: Manuel Medrano Muñoz, Carlos Soria del Hoyo, Alberto Tomás Pérez Izquierdo.

Holder entity: Seville University.

Popularization books:

principles for beginners (an introduction to physics). URSS, 2003.

Our Life in the Electromagnetic Field. Editorial Almuzara. 2009.

Max Planck. The quantum theory The revolution of the very small. RBA. 2012.

The theory of chaos. RBA. 2015.

The topology. Poincaré. Mathematics lose the forms. RBA. 2015.

Daily phenomena. Bathyscaphe. 2016.

PhD supervisor:

Static and Dynamics of Xerographic Granular Materials. Doctoral Thesis. 1997.

Author: Valverde Millán, Jose Manuel.

Dynamics and Stability of Electrohydrodynamic Plumes. Doctoral Thesis. 1998.

Author: Vazquez Gonzalez, Pedro Angel.

Electrohydrodynamic Instabilities Induced by Corona Effect. Doctoral Thesis. 2002.

Author: Vega Reyes, Francisco.

Nonlinear Dynamics of a Conducting Ball Immersed in a Dielectric Liquid Submitted to an Electric Field. Doctoral Thesis. 2004.

Author: Khayari, Abdelmounim.

Experimental Study of Electrical Conductivity and Electrophoretic Mobility of Suspensions Moderately Concentrated in Non-Aqueous Liquids. Doctoral Thesis. 2009.

Author: Medrano Muñoz, Manuel.

For any questions or suggestions contact me through my email.

Members of the group