http://www.cnr.it/ontology/cnr/individuo/prodotto/ID42613

Polarity inversion in electrohydrodynamic spraying (Articolo in rivista)

Type

Label

Polarity inversion in electrohydrodynamic spraying (Articolo in rivista) (literal)

Anno

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Alternative label

Ragucci R; Bellofiore A; Cavaliere A (2004)
Polarity inversion in electrohydrodynamic spraying
in Combustion science and technology; Taylor & Francis Group, London (Regno Unito)
(literal)

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Pagina inizio

Pagina fine

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Rivista

Note

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CNR ISTITUTO DI RICERCHE SULLA COMBUSTIONE UNIV. NAPOLI FEDERICO II FACOLTA' DI INGEGNERIA DIP. INGEGNERIA CHIMICA (literal)

Titolo

Abstract

An experimental study of polarity inversion effects in electrohydrodynamic spraying is developed by characterizing the several atomization regimes that can be observed by varying liquid flow rate and applied voltage. n-Heptane, doped with an antistatic additive, is atomized in a classical needle-to-plate system. The study allows for the determination of two-dimensional maps of the stability regimes occurring by varying the controlling parameters. These maps have been obtained by comparison of results of direct visualization, by means of a digital camera, and Particle Dynamics Analyzer (PDA) mea- surements of droplet size and velocity components. Results show that occurrence of the regimes is not qualitatively influenced by polarity inversion, but in the negative polarity case any modification on spraying modes needs higher variation in applied voltage, and so the regimes are stable in larger voltage ranges. (literal)

Editore