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Two-dimensional numerical simulation of a scroll expander for ORC applications / Louis Dubail 

Public ISBD Titre : Two-dimensional numerical simulation of a scroll expander for ORC applications Type de document : Travail de fin d'études Auteurs : Louis Dubail, Auteur ; Giovanna Cavazzini, ; Patrick Hovine Editeur : ECAM Année de publication : 2018 Note générale : Universita degli Studi di Padova Langues : Anglais (eng) Index. décimale : TFE - Electromécanique Résumé : Over the past few decades, the study of scroll expanders has brought a lot of interest in research, as they are able to recover and transform low-grade temperature energy into mechanical energy and finally into electrical energy. As they are difficult to modelize and simulate in CFD (Computational Fluid Dynamis) softwares, several different approaches exist to try and resolve the problem. The literature describes different geometries and different techniques in order to simulate the system in the best and most realistic way. Therefore, this thesis will try to bring some elements of answer in order to carry out a two-dimensional simulation of a scroll expander, using dynamic meshing technique in Ansys-CFX software. In order to do that, a simple geometry will be computed in Matlab and then exported to a text file, to be able to create a mesh in Ansys. The thesis is expected to supply a basis for further studies on more accurate 2D or 3D models of scroll expanders. Two-dimensional numerical simulation of a scroll expander for ORC applications [Travail de fin d'études] / Louis Dubail, Auteur ; Giovanna Cavazzini, ; Patrick Hovine . - ECAM, 2018. Universita degli Studi di Padova Langues : Anglais (eng) Index. décimale : TFE - Electromécanique Résumé : Over the past few decades, the study of scroll expanders has brought a lot of interest in research, as they are able to recover and transform low-grade temperature energy into mechanical energy and finally into electrical energy. As they are difficult to modelize and simulate in CFD (Computational Fluid Dynamis) softwares, several different approaches exist to try and resolve the problem. The literature describes different geometries and different techniques in order to simulate the system in the best and most realistic way. Therefore, this thesis will try to bring some elements of answer in order to carry out a two-dimensional simulation of a scroll expander, using dynamic meshing technique in Ansys-CFX software. In order to do that, a simple geometry will be computed in Matlab and then exported to a text file, to be able to create a mesh in Ansys. The thesis is expected to supply a basis for further studies on more accurate 2D or 3D models of scroll expanders.

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