Flexible Piezoelectric Drop-On-Demand Droplet Generation
[EN] The size of droplets generated by piezoelectric drop-on-demand (DOD) droplet generators can be varied to a certain degree within one order of magnitude. This variation means that the droplet size is not solely determined by the nozzle diameter, and the droplet generation process is not restrict...
| Autores: | , , |
|---|---|
| Tipo de recurso: | capítulo de libro |
| Fecha de publicación: | 2017 |
| País: | España |
| Institución: | Universitat Politècnica de València (UPV) |
| Repositorio: | RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
| Idioma: | inglés |
| OAI Identifier: | oai:riunet.upv.es:10251/99933 |
| Acceso en línea: | https://riunet.upv.es/handle/10251/99933 |
| Access Level: | acceso abierto |
| Palabra clave: | Piezoelectic droplet-on-demand droplet generator Modal analysis Compressible two-phase flow |
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Flexible Piezoelectric Drop-On-Demand Droplet GenerationRiefler, NorbertWriedt, ThomasFritsching, UdoPiezoelectic droplet-on-demand droplet generatorModal analysisCompressible two-phase flow[EN] The size of droplets generated by piezoelectric drop-on-demand (DOD) droplet generators can be varied to a certain degree within one order of magnitude. This variation means that the droplet size is not solely determined by the nozzle diameter, and the droplet generation process is not restricted to drops extruded through a nozzle in conventional operation. By varying the electronic driving pulse, different droplet sizes can be obtained. To investigate the interaction of piezoelectric pulse excitation and the finally produced droplets, different approaches are applied. A comparison of a modal analysis of a pure piezo based on mechanical admittance calculations proofs the usability of electrical impedance measurements. This kind of measurements are then compared to finite-element simulations of a coupled piezo system – one as actuator, the other as pressure sensor – to extend the usable methods with the result that the fluid is of minor influence on the modal frequencies. Last, two phase fluid flow simulations with consequent pressure wave evaluations of the fluid show different pressure wave frequency specta than the modal analysis.We would like to thank the German Research Foundation (DFG) for financial support of this project.Editorial Universitat Politècnica de ValènciaDeutsche ForschungsgemeinschaftRepositorio Institucional de la Universitat Politècnica de València Riunet20172017-07-28book parthttp://purl.org/coar/resource_type/c_3248VoRhttp://purl.org/coar/version/c_970fb48d4fbd8a85info:eu-repo/semantics/bookPartapplication/pdfhttps://riunet.upv.es/handle/10251/99933reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valénciainstname:Universitat Politècnica de València (UPV)Inglésengopen accesshttp://purl.org/coar/access_right/c_abf2Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:riunet.upv.es:10251/999332026-06-13T07:49:27Z |
| dc.title.none.fl_str_mv |
Flexible Piezoelectric Drop-On-Demand Droplet Generation |
| title |
Flexible Piezoelectric Drop-On-Demand Droplet Generation |
| spellingShingle |
Flexible Piezoelectric Drop-On-Demand Droplet Generation Riefler, Norbert Piezoelectic droplet-on-demand droplet generator Modal analysis Compressible two-phase flow |
| title_short |
Flexible Piezoelectric Drop-On-Demand Droplet Generation |
| title_full |
Flexible Piezoelectric Drop-On-Demand Droplet Generation |
| title_fullStr |
Flexible Piezoelectric Drop-On-Demand Droplet Generation |
| title_full_unstemmed |
Flexible Piezoelectric Drop-On-Demand Droplet Generation |
| title_sort |
Flexible Piezoelectric Drop-On-Demand Droplet Generation |
| dc.creator.none.fl_str_mv |
Riefler, Norbert Wriedt, Thomas Fritsching, Udo |
| author |
Riefler, Norbert |
| author_facet |
Riefler, Norbert Wriedt, Thomas Fritsching, Udo |
| author_role |
author |
| author2 |
Wriedt, Thomas Fritsching, Udo |
| author2_role |
author author |
| dc.contributor.none.fl_str_mv |
Deutsche Forschungsgemeinschaft Repositorio Institucional de la Universitat Politècnica de València Riunet |
| dc.subject.none.fl_str_mv |
Piezoelectic droplet-on-demand droplet generator Modal analysis Compressible two-phase flow |
| topic |
Piezoelectic droplet-on-demand droplet generator Modal analysis Compressible two-phase flow |
| description |
[EN] The size of droplets generated by piezoelectric drop-on-demand (DOD) droplet generators can be varied to a certain degree within one order of magnitude. This variation means that the droplet size is not solely determined by the nozzle diameter, and the droplet generation process is not restricted to drops extruded through a nozzle in conventional operation. By varying the electronic driving pulse, different droplet sizes can be obtained. To investigate the interaction of piezoelectric pulse excitation and the finally produced droplets, different approaches are applied. A comparison of a modal analysis of a pure piezo based on mechanical admittance calculations proofs the usability of electrical impedance measurements. This kind of measurements are then compared to finite-element simulations of a coupled piezo system – one as actuator, the other as pressure sensor – to extend the usable methods with the result that the fluid is of minor influence on the modal frequencies. Last, two phase fluid flow simulations with consequent pressure wave evaluations of the fluid show different pressure wave frequency specta than the modal analysis. |
| publishDate |
2017 |
| dc.date.none.fl_str_mv |
2017 2017-07-28 |
| dc.type.none.fl_str_mv |
book part http://purl.org/coar/resource_type/c_3248 VoR http://purl.org/coar/version/c_970fb48d4fbd8a85 |
| dc.type.openaire.fl_str_mv |
info:eu-repo/semantics/bookPart |
| format |
bookPart |
| dc.identifier.none.fl_str_mv |
https://riunet.upv.es/handle/10251/99933 |
| url |
https://riunet.upv.es/handle/10251/99933 |
| dc.language.none.fl_str_mv |
Inglés eng |
| language_invalid_str_mv |
Inglés |
| language |
eng |
| dc.rights.none.fl_str_mv |
open access http://purl.org/coar/access_right/c_abf2 Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| dc.rights.openaire.fl_str_mv |
info:eu-repo/semantics/openAccess |
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open access http://purl.org/coar/access_right/c_abf2 Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) http://creativecommons.org/licenses/by-nc-nd/4.0/ |
| eu_rights_str_mv |
openAccess |
| dc.format.none.fl_str_mv |
application/pdf |
| dc.publisher.none.fl_str_mv |
Editorial Universitat Politècnica de València |
| publisher.none.fl_str_mv |
Editorial Universitat Politècnica de València |
| dc.source.none.fl_str_mv |
reponame:RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia instname:Universitat Politècnica de València (UPV) |
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Universitat Politècnica de València (UPV) |
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RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
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RiuNet. Repositorio Institucional de la Universitat Politécnica de Valéncia |
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15.301603 |