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Cálculo acústico de silenciadores de escape con arrays de conductos mediante elementos finitos

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Cálculo acústico de silenciadores de escape con arrays de conductos mediante elementos finitos

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dc.contributor.advisor Denia Guzmán, Francisco David es_ES
dc.contributor.author Algarra Navarro, Javier es_ES
dc.date.accessioned 2015-06-19T09:39:46Z
dc.date.available 2015-06-19T09:39:46Z
dc.date.created 2015-06-17
dc.date.issued 2015-06-19
dc.identifier.uri http://hdl.handle.net/10251/51947
dc.description.abstract The aim of this project is to determine and analyze the transmission loss (TL), this means the acoustic attenuation, due to the different geometrical configurations of our chamber from an exhaust system of an internal combustion engine. The main function of silencers is the attenuation of the flow pulsations generated by the discharge gases process in the internal combustion engine. This study will be performed using Finite Element Methods (FEM) programs, which is a mathematical technique for finding approximate solutions to boundary value problems for partial differential equations. The aim of the development and use of this type of programs is based on the reduction of time and also the economic advantage, compared to the conventional measurement techniques. It has been also developed simple analytical techniques (plane wave’s models), which can be applied during the design stage, to be able to establish a first approximation of the behavior of our silencer under study. The main disadvantage of this technique is the type of geometric design which can be studied. This means, it is too complicated to study with this technics, complex designs. For this reason, we have use a Finite Element Method (FEM) which permit the study of a more complex geometry. In reference to the Finite Element Method (FEM), in this project we have use two different programs to be able to determine whether the design is optimal or not. These programs are Ansys and Sysnoise. Ansys is used to design the geometry and to establish the mesh on our device (Preprocessor) and with Sysnoise, we establish the pressure behavior and velocity behavior of our device (Postprocesor). With these results we are able to analyze the transmission loss (TL) of our silencer and determine whether the design is optimal or not, depending on our initial criterion. We must say that Ansys is a powerful program with which we could also study the acoustic behavior of our devices. However, Sysnoise is not only more specialized, but also requires a less computational effort, this translate in a more efficient and economic analysis. There are lots of different geometric configurations to reach an optimal sound attenuation of the exhaust system, in the case of an internal combustion engine. In this project we will focus on the study of the transmission loss (TL), acoustic attenuation, of two different geometrical configurations of our silencer. The first device under study will be a non-axisymmetric (rectangular) empty chamber and an axisymmetric (circular) empty chamber configuration and the second device under study will be a non-axisymmetric chamber and an axisymmetric chamber with radial and axial Arrays configuration. es_ES
dc.description.abstract Puedes encontrar el trabajo académico en la biblioteca de la ETSID (P PFC/10141) es_ES
dc.format.extent 119 es_ES
dc.language Inglés es_ES
dc.rights Reserva de todos los derechos es_ES
dc.subject ARRAYS es_ES
dc.subject Cálculo acústico es_ES
dc.subject Elementos finitos es_ES
dc.subject Silenciadores de escape es_ES
dc.subject.classification INGENIERIA MECANICA es_ES
dc.subject.other Grado en Ingeniería Mecánica-Grau en Enginyeria Mecànica es_ES
dc.title Cálculo acústico de silenciadores de escape con arrays de conductos mediante elementos finitos es_ES
dc.title.alternative Finite element based in acoustic analysis of exhaut silencers incorporating duct arrays 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 Algarra Navarro, J. (2015). Cálculo acústico de silenciadores de escape con arrays de conductos mediante elementos finitos. http://hdl.handle.net/10251/51947. es_ES
dc.description.accrualMethod Archivo delegado es_ES


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