Articles producció científica> Enginyeria Química

Electrosprays in the cone-jet mode: From Taylor cone formation to spray development

  • Dades identificatives

    Identificador: imarina:5133228
    Autors:
    Rosell-Llompart J, Grifoll J, Loscertales I
    Resum:
    Electrospray is a relatively mature research field, with sustained and growing activity. It has attracted researchers from diverse application fields. Electrospray is perhaps best known as a tool which has enabled the mass spectrometry analysis of large biomolecules (proteins and DNA). It has also been proposed as a colloidal thruster for spacecraft propulsion. And also, it has been used as a general methodology for converting precursor droplets to microspheres and other particle morphologies and films, with controlled nanostructure. In parallel to this body of applied research, other efforts have been aimed at improving the understanding of the underlying physics of electrosprays. While many reviews exist on applications of this system, wherein the physics of the process is described to a certain extent, the present review focuses on the fundamentals. We begin by describing the different modes developing in liquid menisci to which an electrical potential is applied. Due to its applications, the mode of greatest interest is the cone-jet mode in which a steady microscopic jet is emitted and breaks up periodically into uniformly sized droplets. The physics of this mode is then explored in detail, first by reviewing the remarkable effort in the field aimed at identifying so called scaling laws. These are simple scaling relationships connecting the variables of the problem which can be applicable to many operating conditions. We then describe the dynamics of generation of the jet which emerges from the electrified conical meniscus, as well as the physics associated with the spray plume development. We conclude with the extension of these concepts to multi-fluid configurations, such as coaxial and parallel flows.
  • Altres:

    Autor segons l'article: Rosell-Llompart J, Grifoll J, Loscertales I
    Departament: Enginyeria Química
    Autor/s de la URV: GRIFOLL TAVERNA, JORDI / Rosell Llompart, Joan
    Paraules clau: Electrospray Electrohydrodynamic atomisation Electro-hydrodynamic modes Ehda Cone-jets Coaxial electrospraying Charged droplets
    Resum: Electrospray is a relatively mature research field, with sustained and growing activity. It has attracted researchers from diverse application fields. Electrospray is perhaps best known as a tool which has enabled the mass spectrometry analysis of large biomolecules (proteins and DNA). It has also been proposed as a colloidal thruster for spacecraft propulsion. And also, it has been used as a general methodology for converting precursor droplets to microspheres and other particle morphologies and films, with controlled nanostructure. In parallel to this body of applied research, other efforts have been aimed at improving the understanding of the underlying physics of electrosprays. While many reviews exist on applications of this system, wherein the physics of the process is described to a certain extent, the present review focuses on the fundamentals. We begin by describing the different modes developing in liquid menisci to which an electrical potential is applied. Due to its applications, the mode of greatest interest is the cone-jet mode in which a steady microscopic jet is emitted and breaks up periodically into uniformly sized droplets. The physics of this mode is then explored in detail, first by reviewing the remarkable effort in the field aimed at identifying so called scaling laws. These are simple scaling relationships connecting the variables of the problem which can be applicable to many operating conditions. We then describe the dynamics of generation of the jet which emerges from the electrified conical meniscus, as well as the physics associated with the spray plume development. We conclude with the extension of these concepts to multi-fluid configurations, such as coaxial and parallel flows.
    Àrees temàtiques: Química Pollution Meteorology & atmospheric sciences Mechanical engineering Materials science (miscellaneous) General materials science Fluid flow and transfer processes Environmental sciences Environmental engineering Environmental chemistry Engineering, mechanical Engineering, chemical Atmospheric science
    ISSN: 00218502
    Adreça de correu electrònic de l'autor: joan.rosell@urv.cat
    Identificador de l'autor: 0000-0002-5288-9150
    Pàgina final: 31
    Data d'alta del registre: 2024-09-07
    Volum de revista: 125
    Versió de l'article dipositat: info:eu-repo/semantics/acceptedVersion
    Enllaç font original: https://www.sciencedirect.com/science/article/pii/S0021850217304366
    URL Document de llicència: https://repositori.urv.cat/ca/proteccio-de-dades/
    Referència a l'article segons font original: Journal Of Aerosol Science. 125 2-31
    Referència de l'ítem segons les normes APA: Rosell-Llompart J, Grifoll J, Loscertales I (2018). Electrosprays in the cone-jet mode: From Taylor cone formation to spray development. Journal Of Aerosol Science, 125(), 2-31. DOI: 10.1016/j.jaerosci.2018.04.008
    DOI de l'article: 10.1016/j.jaerosci.2018.04.008
    Entitat: Universitat Rovira i Virgili
    Any de publicació de la revista: 2018
    Pàgina inicial: 2
    Tipus de publicació: Journal Publications
  • Paraules clau:

    Atmospheric Science,Engineering, Chemical,Engineering, Mechanical,Environmental Chemistry,Environmental Engineering,Environmental Sciences,Fluid Flow and Transfer Processes,Materials Science (Miscellaneous),Mechanical Engineering,Meteorology & Atmospheric Sciences,Pollution
    Electrospray
    Electrohydrodynamic atomisation
    Electro-hydrodynamic modes
    Ehda
    Cone-jets
    Coaxial electrospraying
    Charged droplets
    Química
    Pollution
    Meteorology & atmospheric sciences
    Mechanical engineering
    Materials science (miscellaneous)
    General materials science
    Fluid flow and transfer processes
    Environmental sciences
    Environmental engineering
    Environmental chemistry
    Engineering, mechanical
    Engineering, chemical
    Atmospheric science
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