Effect of base flownon-parallelism on the local linear stability of low-density jets

Blanco Iglesias, José Miguel

Publication:
Effect of base flownon-parallelism on the local linear stability of low-density jets

dc.contributor.advisor	Coenen, Wilfried
dc.contributor.author	Blanco Iglesias, José Miguel
dc.contributor.departamento	UC3M. Departamento de Ingeniería Térmica y de Fluidos	es
dc.date.accessioned	2016-05-06T19:25:47Z
dc.date.available	2016-05-06T19:25:47Z
dc.date.issued	2014-06
dc.date.submitted	2014-07-11
dc.description.abstract	The effect of retaining base flow non-parallelism in the local linear spatiotemporal stability analysis of slender low-density jets, discharging from a round injector into a quiescent ambient, is studied in the present work. Retaining base flow non-parallelism in the local linear stability analysis was found to have a stabilizing effect in the flow closer to the injector exit. This effect was greater the lower the values of the Reynolds number and the initial momentum thickness of the velocity profile at the injector exit. When comparing the results obtained to existing experimental data, maintaining the base flow non-parallelism in the analysis gave better agreement with the experimental data than not taking base flow non-parallelism into account. Furthermore, it changed the evolution of the local stability properties so that a more theoretically sound criteria could be used in determining the absolute or convective unstable nature of the flow. This allows to reduce the uncertainty in the stability description of the flow when base flow non-parallelism is retained in the stability analysis.	es
dc.description.degree	Ingeniería Aeroespacial	es
dc.format.mimetype	application/pdf
dc.identifier.uri	https://hdl.handle.net/10016/22927
dc.language.iso	eng	es
dc.rights	Atribución-NoComercial-SinDerivadas 3.0 España	*
dc.rights.accessRights	open access	es
dc.rights.uri	http://creativecommons.org/licenses/by-nc-nd/3.0/es/	*
dc.subject.eciencia	Aeronáutica	es
dc.subject.other	Dinámica de fluidos	es
dc.subject.other	Aeronáutica	es
dc.subject.other	Estabilidad	es
dc.title	Effect of base flownon-parallelism on the local linear stability of low-density jets	es
dc.type	bachelor thesis	*
dspace.entity.type	Publication