Análisis del comportamiento de un rodamiento de vuelco mediante elementos finitos y técnicas de subestructuras

[ES]estudio del comportamiento de un rodamiento de vuelco situado en la unión buje-pala de un aerogenerador mediante diferentes técnicas de modelización por elementos finitos y su comparación. Los análisis realizados son: estático con contacto Rough, estático con contacto Bonded y mediante técnicas de subestructuras. En el estudio se ha utilizado ANSYS Mechanical APDL.

Análisis del flujo de

[ES]Este proyecto estudia el flujo de dióxido de carbono a través de toberas de diferentes diámetros con un software de simulación, mediante el método de los volúmenes finitos (CFD). El objetivo es poder elegir la tobera que optimice la cantidad de gas utilizado en función de la distancia a la que tenga que llegar. Con un modelo computacional adecuado, esta simulación puede realizarse en un ordenador sin tener que recurrir a ensayos, ahorrando costes y tiempo.

Adaptive coatings based on polyaniline for direct 2D observation of diffusion processes in microfluidic systems

[EN] Therefore the understanding and proper evaluation of the flow and mixing behaviour at microscale becomes a very important issue. In this study, the diffusion behaviour of two reacting solutions of HCI and NaOH were directly observed in a glass/polydimethylsiloxane microfluidic device using adaptive coatings based on the conductive polymer polyaniline that are covalently attached to the microchannel walls. The two liquid streams were combined at the junction of a Y-shaped microchannel, and allowed to diffuse into each other and react. The results showed excellent correlation between optical observation of the diffusion process and the numerical results. A numerical model which is based on finite volume method (FVM) discretisation of steady Navier-Stokes (fluid flow) equations and mass transport equations without reactions was used to calculate the flow variables at discrete points in the finite volume mesh element. The high correlation between theory and practical data indicates the potential of such coatings to monitor diffusion processes and mixing behaviour inside microfluidic channels in a dye free environment.