Computational fluid dynamics-based design optimization for an implantable miniature maglev pediatric ventricular assist device / Jingchun Wu in Transactions of the ASME . Journal of fluids engineering, Vol. 134 N° 4 (Avril 2012)  

Public ISBD [article]  inTransactions of the ASME . Journal of fluids engineering > Vol. 134 N° 4 (Avril 2012) . - 09 p. Titre : Computational fluid dynamics-based design optimization for an implantable miniature maglev pediatric ventricular assist device Type de document : texte imprimé Auteurs : Jingchun Wu, Auteur ; James F. Antaki, Auteur ; Josiah Verkaik, Auteur Année de publication : 2012 Article en page(s) : 09 p. Note générale : Fluids engineering Langues : Anglais (eng) Mots-clés : pediatric ventricular  assist device  left ventricular device (LVAD)  Computational fluid dynamics  optimization  hemolysis  radial stiffness  heat transfer  two-stage impellers Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : Computational fluid dynamics (CFD)-based design optimization was applied to achieve the finalized design of the PediaFlow® PF4, a magnetically levitated rotodynamic pediatric ventricular assist device. It features a streamlined blood-flow path with a single annular fluid passage between the rotor and the stationary housing. The resulting impeller is composed of a first-stage mixed-flow section having four blades at the conical nose region followed by a second-stage fully axial-flow section with three blades within the annular gap region. A stator with three inwardly-directed vanes is provided at the conical tail region to recover pressure and straighten the flow. CFD predictions of head and efficiency characteristics agreed remarkably well with the validation experimental data: with overprediction of head by DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA4000134000004 [...] [article] Computational fluid dynamics-based design optimization for an implantable miniature maglev pediatric ventricular assist device [texte imprimé] / Jingchun Wu, Auteur ; James F. Antaki, Auteur ; Josiah Verkaik, Auteur . - 2012 . - 09 p. Fluids engineering Langues : Anglais (eng) in Transactions of the ASME . Journal of fluids engineering > Vol. 134 N° 4 (Avril 2012) . - 09 p. Mots-clés : pediatric ventricular  assist device  left ventricular device (LVAD)  Computational fluid dynamics  optimization  hemolysis  radial stiffness  heat transfer  two-stage impellers Index. décimale : 620.1 Essais des matériaux. Défauts des matériaux. Protection des matériaux Résumé : Computational fluid dynamics (CFD)-based design optimization was applied to achieve the finalized design of the PediaFlow® PF4, a magnetically levitated rotodynamic pediatric ventricular assist device. It features a streamlined blood-flow path with a single annular fluid passage between the rotor and the stationary housing. The resulting impeller is composed of a first-stage mixed-flow section having four blades at the conical nose region followed by a second-stage fully axial-flow section with three blades within the annular gap region. A stator with three inwardly-directed vanes is provided at the conical tail region to recover pressure and straighten the flow. CFD predictions of head and efficiency characteristics agreed remarkably well with the validation experimental data: with overprediction of head by DEWEY : 620.1 ISSN : 0098-2202 En ligne : http://asmedl.org/getabs/servlet/GetabsServlet?prog=normal&id=JFEGA4000134000004 [...]

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