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Influence of the thermal boundary condition on the heat transfer in a rib-roughened cooling channel using LES and RANS

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Influence of the thermal boundary condition on the heat transfer in a rib-roughened cooling channel using LES and RANS

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dc.contributor.advisor Verstraete, Tom es_ES
dc.contributor.advisor Gil Megías, Antonio es_ES
dc.contributor.author Torres García, José Vicente es_ES
dc.date.accessioned 2015-04-27T13:50:48Z
dc.date.available 2015-04-27T13:50:48Z
dc.date.created 2014-09-26
dc.date.issued 2015-04-27
dc.identifier.uri http://hdl.handle.net/10251/49314
dc.description.abstract Internal cooling systems equipped with rib-roughened cooling ducts are used at turbine blades to refrigerate the metal by forced convection. The heat exchange between the walls of the cooling duct and the uid is sometimes modelled by Newton's law of cooling considering the heat transfer coe cient as a constant for a determinate study case. This assumption implies that the heat transfer is only a function of the temperature di erence between the wall temperature and the bulk ow temperature. The present study checks the in uence of the wall operating conditions over the heat transfer coe cient by simulating cases with di erent duct boundary conditions. Isother- mal and uniform heat ux rate boundary conditions with di erent discrete values are simulated using AVBP software. The mentioned simulations are also compared with other experimental and simulated results obtained by using Fluent software. The results show a increase in the heat transfer coe cient between the interface and the uid for the higher wall temperature when using an isothermal boundary condition and also for the higher heat ux rate when using an uniform heat ux rate boundary condition. A higher heat transfer coe cient is also seen when using the isothermal boundary condition compared to the use of an uniform heat ux rate boundary condition. es_ES
dc.format.extent 75 es_ES
dc.language Inglés es_ES
dc.publisher Universitat Politècnica de València es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject Boundary conditions es_ES
dc.subject Cooling systems es_ES
dc.subject Heat transfer es_ES
dc.subject LES es_ES
dc.subject RANS es_ES
dc.subject.classification INGENIERIA AEROESPACIAL es_ES
dc.subject.other Grado en Ingeniería Aeroespacial-Grau en Enginyeria Aeroespacial es_ES
dc.title Influence of the thermal boundary condition on the heat transfer in a rib-roughened cooling channel using LES and RANS es_ES
dc.type Proyecto/Trabajo fin de carrera/grado es_ES
dc.rights.accessRights Cerrado 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 Torres García, JV. (2014). Influence of the thermal boundary condition on the heat transfer in a rib-roughened cooling channel using LES and RANS. Universitat Politècnica de València. http://hdl.handle.net/10251/49314 es_ES
dc.description.accrualMethod Archivo delegado es_ES


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