PONTIGA ROMERO , Francisco De Paula

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The problem of the propagation of an electrical discharge between a spherical electrode and a plane has been solved by means of finite element methods (FEM) using a fluid approximation and assuming weak ionization and local equilibrium with the electric field. The numerical simulation of this type of problems presents the usual difficulties of...

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The UV-visible spectroscopyin the range from190 to 320 nm wasutilizedtodetectthe ozone formation, in wire-to-cylindercorona reactorwithnegativepolarity. The effectof N2+O2 mixture on ozone production has been investigated. The maximum production of ozone was already corresponding to 70% of oxygen in the gas mixture forany applied voltage...

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Research on corona wind generation has been increasing in recent years because of its potential technological applications, particularly those related to improving heat transfer in small-scale devices. Since numerical simulations play a key role in the design of these applications, computationally efficient modeling of corona discharge is...

The spatial distribution of charged particles (electrons, negative ions and positive ions) and electric field have been evaluated using a semi-analytical approach of the positive and negative corona discharge for a wire-to-plate electrode system. Thus, approximate formulas useful for the characterization and control of corona discharge devices...

The electrohydrodynamic air flow generated by a positive corona discharge, and its effect on the spatial distribution of chemical species within a wire-plate corona reactor, have been numerically simulated. The computational model is based on the solutions of the Navier- Stokes equation and the continuity equation of each chemical species...

Carbon negative emission technologies (NETs) such as CO2 direct air capture (DAC) are being already considered as necessary for climate change mitigation. This paper investigates CO2 capture at room temperature and atmospheric pressure by a fluidized bed of Ca(OH)2 powder as influenced by the relative humidity (RH) to which this sorbent was...

A multi-species model consisting of seven species has been implemented to simulate the generation and development of Trichel pulses in oxygen between a sphere (the cathode) and a plane (the anode). The spatial and temporal evolution of species is obtained by solving the continuity equations of species using a classical one-dimensional model of...

Carbon dioxide decomposition in mixtures of CO2and O2has been experimentally investigatedusing dielectric barrier discharge, with special interest on O3and COproductions. Experiments have been conducted at different frequencies and operating voltages, and the concentration of O3and COhave been measured by means of absorption...