Estudio de viabilidad de implantación de un parque eólico

Duración (en horas): De 31 a 40 horas. Nivel educativo: GradoEl proyecto, realizado en grupos de 3 ó 4 alumnos, consiste en la realización del estudio de la viabilidad de implantación de un parque eólico en un emplazamiento elegido por el grupo dentro de la Comunidad Autónoma del País Vasco. Se enmarca en las cinco últimas semanas de docencia de la asignatura de Máquinas Hidráulicas, correspondiente a la titulación de Ingeniería Técnica Industrial especialidad Mecánica. Con el proyecto, los alumnos aprenden a realizar el estudio de viabilidad de instalación del parque en función de los datos disponibles del viento y eligiendo el aerogenerador más adecuado de entre los disponibles en el mercado

Power Control Optimization of an Underwater Piezoelectric Energy Harvester

Over the past few years, it has been established that vibration energy harvesters with intentionally designed components can be used for frequency bandwidth enhancement under excitation for sufficiently high vibration amplitudes. Pipelines are often necessary means of transporting important resources such as water, gas, and oil. A self-powered wireless sensor network could be a sustainable alternative for in-pipe monitoring applications. A new control algorithm has been developed and implemented into an underwater energy harvester. Firstly, a computational study of a piezoelectric energy harvester for underwater applications has been studied for using the kinetic energy of water flow at four different Reynolds numbers Re = 3000, 6000, 9000, and 12,000. The device consists of a piezoelectric beam assembled to an oscillating cylinder inside the water of pipes from 2 to 5 inches in diameter. Therefore, unsteady simulations have been performed to study the dynamic forces under different water speeds. Secondly, a new control law strategy based on the computational results has been developed to extract as much energy as possible from the energy harvester. The results show that the harvester can efficiently extract the power from the kinetic energy of the fluid. The maximum power output is 996.25 mu W and corresponds to the case with Re = 12,000.The funding from the Government of the Basque Country and the University of the Basque Country UPV/EHU through the SAIOTEK (S-PE11UN112) and EHU12/26 research programs, respectively, is gratefully acknowledged. The authors are very grateful to SGIker of UPV/EHU and European funding (ERDF and ESF) for providing technical and human

Computational Characterization of a Rectangular Vortex Generator on a Flat Plate for Different Vane Heights and Angles

Vortex generators (VG) are passive flow control devices used for avoiding or delaying the separation of the boundary layer by bringing momentum from the higher layers of the fluid towards the surface. The Vortex generator usually has the same height as the local boundary layer thickness, and these Vortex generators can produce overload drag in some cases. The aim of the present study was to analyze the characteristics and path of the primary vortex produced by a single rectangular vortex generator on a flat plate for the incident angles of beta = 10 degrees, 15 degrees, 18 degrees and 20 degrees. A parametric study of the induced vortex was performed for six VG heights using Reynolds average Navier-Stokes equations at Reynodls number Re = 27,000 based on the local boundary layer thickness, using computational fluid dynamics techniques with OpenFOAM open-source code. In order to determine the vortex size, the so-called half-life radius was computed and compared with experimental data. The results showed a similar trend for all the studied vortex generator heights and incident angles with small variations for the vertical and the lateral paths. Additionally, 0.4H and 0.6H VG heights at incident angles of beta = 18 degrees and beta = 20 degrees showed the best performance in terms of vortex strength and generation of wall shear stress.This research was partially funded by the Government of the Basque Country through the ELKARTEK program and by the Fundation VITAL Fundazioa

Gurney Flap Implementation on a DU91W250 Airfoil

Abstract The increasing capability of Wind Turbine (WT) based power generation systems has derived in an increment of the WT rotor diameter, i.e., longer rotor blades. This results in an increase of the electrical power generated but also in instabilities in the operation of the WT, especially due to the mechanical fatigue loads generated in its elements. In this context, flow control has appeared as a solution to improve the aerodynamic performance of the blades. These devices not only increase lift coefficient but also reduce mechanical fatigue loads. This paper presents a detailed numerical analysis of the effects of placing a passive flow control element, a Gurney Flap (GF), in a DU91W250 airfoil. Moreover, a numerical study of the influence of the GF length on the aerodynamic performance of the blade has been carried out. This study is considered as a basis for the development of an optimization technique of the GF length for long WT blades.The authors are grateful to the Government of the Basque Country and the University of the Basque Country UPV/EHU through the SAIOTEK (S-PE11UN112) and EHU12/26 research programs, respectively. The funding of Fundation Vital Fundazioa is also acknowledged

Aerosol Delivery by Inhalation Catheter and Trachea Digitalization

Neonatal respiratory distress syndrome (RDS) is related with high mortality and morbidity in preterm infants and the best approach to treat it is an open research field. The use of perfluorocarbons (PFC) together with non-invasive respiratory support techniques, such as nasal continuous positive airway pressure (CPAP), has confirmed its effectiveness to achieve a more homogeneous surfactant distribution. The goal of the current study was to evaluate the main features of the aerosol generated by an intracorporeal inhalation catheter, which consists of one central lumen delivering the liquid and six peripheral lumens delivering compressed air. Firstly, experiments were made through an Aerodynamic Particle Sizer (APS) with sterile water and perfluorocarbon FC75 with a driving pressure of 4 bar to analyze properties linked with lung deposition such as the aerodynamic diameter (Da), mass median aerodynamic diameter (MMAD) and geometric standard deviation (GSD). Subsequently, a numerical model was developed with CFD techniques. The experimental validation of the numerical model provides an accurate prediction of the air flow axial velocity.This work has been supported by Consolidated Groups from the Basque Government. Technical and human support provided by IZO-SGI, SGIker is gratefully acknowledged

Aerosol Delivery by Inhalation Catheter and Trachea Digitalization

Neonatal respiratory distress syndrome (RDS) is related with high mortality and morbidity in preterm infants and the best approach to treat it is an open research field. The use of perfluorocarbons (PFC) together with non-invasive respiratory support techniques, such as nasal continuous positive airway pressure (CPAP), has confirmed its effectiveness to achieve a more homogeneous surfactant distribution. The goal of the current study was to evaluate the main features of the aerosol generated by an intracorporeal inhalation catheter, which consists of one central lumen delivering the liquid and six peripheral lumens delivering compressed air. Firstly, experiments were made through an Aerodynamic Particle Sizer (APS) with sterile water and perfluorocarbon FC75 with a driving pressure of 4 bar to analyze properties linked with lung deposition such as the aerodynamic diameter (Da), mass median aerodynamic diameter (MMAD) and geometric standard deviation (GSD). Subsequently, a numerical model was developed with CFD techniques. The experimental validation of the numerical model provides an accurate prediction of the air flow axial velocity.This work has been supported by Consolidated Groups from the Basque Government. Technical and human support provided by IZO-SGI, SGIker is gratefully acknowledged

Experimental and Numerical Modeling of Aerosol Delivery for Preterm Infants

Respiratory distress syndrome (RDS) represents one of the major causes of mortality among preterm infants, and the best approach to treat it is an open research issue. The use of perfluorocarbons (PFC) along with non-invasive respiratory support techniques has proven the usefulness of PFC as a complementary substance to achieve a more homogeneous surfactant distribution. The aim of this work was to study the inhaled particles generated by means of an intracorporeal inhalation catheter, evaluating the size and mass distribution of different PFC aerosols. In this article, we discuss different experiments with the PFC perfluorodecalin (PFD) and FC75 with a driving pressure of 4-5 bar, evaluating properties such as the aerodynamic diameter (Da), since its value is directly linked to particle deposition in the lung. Furthermore, we develop a numerical model with computational fluid dynamics (CFD) techniques. The computational results showed an accurate prediction of the airflow axial velocity at different downstream positions when compared with the data gathered from the real experiments. The numerical validation of the cumulative mass distribution for PFD particles also confirmed a closer match with the experimental data measured at the optimal distance of 60 mm from the catheter tip. In the case of FC75, the cumulative mass fraction for particles above 10 mu m was considerable higher with a driving pressure of 5 bar. These numerical models could be a helpful tool to assist parametric studies of new non-invasive devices for the treatment of RDS in preterm infants.Consolidated Groups from the Basque Government supported this work. Technical and human support provided by IZO-SGI, SGIker (UPV/EHU) is gratefully acknowledged

Estudio de investigación de las competencias demandadas y del perfil profesional requerido a los titulados de la Escuela Universitaria de Ingeniería de Vitoria-Gasteiz

A partir del análisis del perfil del ingeniero en la sociedad europea, se ha elaborado una encuesta amplia mediante la que se solicitó a las empresas del entorno las competencias y materias que consideraban más importantes en la formación de los ingenieros de las titulaciones ofertadas en la Escuela. A partir de los resultados de dichas encuestas, se establece un perfil requerido a los titulados.Estudio sobre el perfil de ingreso y las competencias demandadas a los titulados de Ingeniería de la EUI de Vitorai-Gasteiz, obtenido a partir del análisis de encuestas completas a empleadores del entornoPrograma IBP para el impulso de la Innovación de la docencia de la UPV/EH

Estudio de viabilidad de implantación de un parque eólico

Duración (en horas): De 31 a 40 horas. Nivel educativo: GradoEl proyecto, realizado en grupos de 3 ó 4 alumnos, consiste en la realización del estudio de la viabilidad de implantación de un parque eólico en un emplazamiento elegido por el grupo dentro de la Comunidad Autónoma del País Vasco. Se enmarca en las cinco últimas semanas de docencia de la asignatura de Máquinas Hidráulicas, correspondiente a la titulación de Ingeniería Técnica Industrial especialidad Mecánica. Con el proyecto, los alumnos aprenden a realizar el estudio de viabilidad de instalación del parque en función de los datos disponibles del viento y eligiendo el aerogenerador más adecuado de entre los disponibles en el mercado