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dc.contributor.author | Tiseira, Andrés-Omar | es_ES |
dc.contributor.author | Dolz, Vicente | es_ES |
dc.contributor.author | Inhestern, Lukas Benjamin | es_ES |
dc.contributor.author | Echavarria-Olaya, Juan David | es_ES |
dc.date.accessioned | 2023-06-09T18:01:47Z | |
dc.date.available | 2023-06-09T18:01:47Z | |
dc.date.issued | 2022-03 | es_ES |
dc.identifier.issn | 1270-9638 | es_ES |
dc.identifier.uri | http://hdl.handle.net/10251/194034 | |
dc.description.abstract | [EN] This paper presents the results of a computational investigation of the aerodynamic choking mechanism in a variable geometry turbine, which is widely used in automotive turbocharging. RANS and URANS numerical simulations were carried out for two stator vane positions, 10% and 30% opening at different speeds and several other operating conditions to observe the establishment of choked flow and rotorstator interactions. When the stator vanes are at a closed position and high-pressure ratio, a shock wave is developed on the suction side of the stator vane; moreover, the effective area extends toward the rotor inlet. The shock losses of a fluid particle upstream of the rotor are related to the number of shocks that the particle goes through. The pressure losses are high close to the stator vanes and start to decrease toward the center of the vaneless space until they start to increase close to the rotor. The interaction between the rotor and stator creates shocks waves with an intensity depending on the rotor's leading edge position and the rotational speed. The pressure profile of the rotor blade under this circumstance is also affected, especially at high rotational speeds, when important load fluctuations may affect the integrity of the blades. | es_ES |
dc.description.sponsorship | The work has been partially supported by the Subprograma de Formación de Profesorado Universitario (FPU). Ministerio de Universidades. FPU18/02628 and by the FPI Subprograma. Universitat Politècnica de València. PAID-10-18 | es_ES |
dc.language | Inglés | es_ES |
dc.publisher | Elsevier | es_ES |
dc.relation.ispartof | Aerospace Science and Technology | es_ES |
dc.rights | Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) | es_ES |
dc.subject | Aerodynamics | es_ES |
dc.subject | CFD | es_ES |
dc.subject | Choking | es_ES |
dc.subject | Radial turbine | es_ES |
dc.subject | Rotor-stator interaction | es_ES |
dc.subject | Shock waves | es_ES |
dc.subject.classification | INGENIERIA AEROESPACIAL | es_ES |
dc.subject.classification | MAQUINAS Y MOTORES TERMICOS | es_ES |
dc.title | Choking dynamic of highly swirled flow in variable nozzle radial turbines | es_ES |
dc.type | Artículo | es_ES |
dc.identifier.doi | 10.1016/j.ast.2022.107396 | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/ //FPU18%2F02628//AYUDA PREDOCTORAL FPU-ECHAVARRIA OLAYA. PROYECTO: ESTUDIO SOBRE NUEVAS TECNOLOGICAS QUE PERMITAN UNA MEJORA EN LA EFICIENCIA DEL SISTEMA DE SOBREALIMENTACION EN MOTORES DE COMBUSTION INTERNA ALTERNATIVOS/ | es_ES |
dc.relation.projectID | info:eu-repo/grantAgreement/UPV//PAID-10-18//Programa de Ayudas de Investigación y Desarrollo/ | es_ES |
dc.rights.accessRights | Abierto | es_ES |
dc.contributor.affiliation | Universitat Politècnica de València. Escuela Técnica Superior de Ingeniería del Diseño - Escola Tècnica Superior d'Enginyeria del Disseny | es_ES |
dc.description.bibliographicCitation | Tiseira, A.; Dolz, V.; Inhestern, LB.; Echavarria-Olaya, JD. (2022). Choking dynamic of highly swirled flow in variable nozzle radial turbines. Aerospace Science and Technology. 122:1-13. https://doi.org/10.1016/j.ast.2022.107396 | es_ES |
dc.description.accrualMethod | S | es_ES |
dc.relation.publisherversion | https://doi.org/10.1016/j.ast.2022.107396 | es_ES |
dc.description.upvformatpinicio | 1 | es_ES |
dc.description.upvformatpfin | 13 | es_ES |
dc.type.version | info:eu-repo/semantics/publishedVersion | es_ES |
dc.description.volume | 122 | es_ES |
dc.relation.pasarela | S\459446 | es_ES |
dc.contributor.funder | Deutsche Forschungsgemeinschaft | es_ES |
dc.contributor.funder | MINISTERIO DE CIENCIA INNOVACION Y UNIVERSIDADES | es_ES |
dc.contributor.funder | Universitat Politècnica de València | |
dc.subject.ods | 09.- Desarrollar infraestructuras resilientes, promover la industrialización inclusiva y sostenible, y fomentar la innovación | es_ES |