Petra Amparo López Jiménez

Redox Cell Hydrodynamics Modelling – Simulation and Experimental Validation

Abstract An electrochemical reactor is an assembly capable of withstanding an electrochemical reaction of practical application. It consists of electrodes surrounded by a volume of liquid electrolyte. Major difficulty and challenge involved in this modeling is the fact that real experimentation with high acid flows is extremely difficult to perform. To overcome them, some assumptions are proposed in order to achieve a computational model suitable to be used as virtual laboratory for redox batteries designers. A model is proposed to analyze the flow of the liquid electrolyte in an electrochemical reactor. Numerical and experimental analyses of such flow in a prototype of a real reactor are proposed. Good hydraulic behaviors will be shown in the majority of the volume, even if there are zones with practically no velocities or with recirculations. These volumes are used to define the parameters that indicate the hydraulic operation. This article describes the experimental and numerical modeling applied to a particular Iron Flow Cell prototype. The experimental validation has shown little numerical errors, smaller than 2.25%. This methodological research provides a very powerful calibrated tool which will help engineers in the future in decision-making in order to optimize real designs.

¿Puede un conjunto de tareas evaluar la competencia “Análisis y Resolución de problemas” en una asignatura de grado?

The active methodologies in which the student are involved in the learning process are crucial for the motivation in the current curriculum. In this sense, the proposal of tasks, in which the student confront a problem, is interesting for the teacher. The results, obtained by learning based on tasks, are shown through the developed case study in the matter Fluid-mechanics Engineering (Iti. 2), which is taught in the third course in the Mechanical Engineering Bachelor’s Degree of the Escuela Politècnica Superior de Alcoy. The manuscript aim is to show six tasks make possible to evaluate the cross competence ‘CT-03 Analysis and Solving the problems’ as well as to improve the learning results of the specifics competences. The experience was developed throughout Poliformat platform, using Tasks tool, in which, the students were applied the evaluation peer review. The manuscript describes the developed rubrics and shows the high participation and satisfaction degree of the students when this learning methodology was applied.

Implementando metodologías de evaluación en proyectos de redes de saneamiento en el Máster Universitario en Ingeniería Hidráulica y Medio Ambiente. Caso de estudio.

Development of projects as teaching strategy is a powerful tool to activate and strengthen the students’ learning. The classical evaluation of projects by numeric items has been the usual way but the introduction of UPV generic student outcomes within student’s curricula obliges to update the evaluation criteria as well as the way to achieve it. This communication presents the time planning of a subject, which represents a level III (Master Degree) control point for the generic outcome ‘Design and Project’. As a consequence of the wide range of the students background in this subject, there are many of them which did not previously work this outcome for levels I and II (Bachelor). A rubric was developed to do the evaluation in which descriptors were defined according to traditional used items. These defined descriptors were used to evaluate the reached degree by the students for each indicator. Finally, the experience demonstrated the possibility to evaluate the ability to develop a project using competences. A comparison between marks obtained by traditional system and marks obtained by competences was developed, getting similar results that did not change the final mark in the student curricula.

Sustainability Challenges in Hydraulic Engineering for Agriculture

Nowadays, hydraulic engineering represents a compromise between science and technique that should go in parallel with the developmentof the farmer’s performance, in agricultural terms. On the one hand, it is the science of water in movement, and its interactions with the surrounding environment, considered as a fluid. On the other hand, water management implications are a junction of challenges to be solved in order to provide the better solutions for population and environment in a sustainable framework.

Los objetos de aprendizaje como conductores para favorecer el aprendizaje autónomo en el campo de la mecánica de fluidos.

El presente trabajo describe la experiencia de los autores en el campo del aprendizaje autonomo en materias de mecanica de fluidos a traves de objetos de aprendizaje. La mecanica de fluidos es una disciplina muy transversal en los programas curriculares de los alumnos de ingenierias, puesto que aborda los problemas de movimiento de agua y aire y se encuentra formando parte de materias basicas en la preparacion de los futuros ingenieros como pilar para sus estudios de instalaciones, maquinaria hidraulica, energia, materias ambientales y de dispersion de contaminantes, materias de sostenibilidad, etc. En este sentido, los conceptos principales de la mecanica de fluidos no son sencillos de transmitir en ocasiones, con los tiempos en los que se dispone para teoria de aula. La disponibilidad de objetos de aprendizaje en este campo, se convierte en una herramienta complementaria importante para que los alumnos puedan apoyarse a su ritmo en la adquisicion de los conceptos que aqui se presentan. La experiencia de los autores en este campo es ya larga y los resultados del seguimiento y las consultas de los objetos puestos a libre disposicion del alumnado, muy satisfactoria.

El e-portafolio y redes multimedia como herramienta de aprendizaje autónomo. Casos de estudio en Grado y Master.

El presente trabajo describe el papel que juega el e-portafolio como una herramienta que cumple un doble objetivo: de un lado, los alumnos tienen que desarrollar problemas de forma autonoma como pequenos estudios de caso basandose en las practicas de aula realizadas previamente. En este sentido el alumno debe aplicar sus conocimientos mas abstractos a la resolucion de problemas. De otro lado, la plataforma Poliforma-T permite al alumno registrar sus documentos en plazos reglamentarios y recibir retroalimentacion sobre la correccion de los mismos antes de la evaluacion correspondiente. De forma paralela, los conocimientos teoricos se encuentran a disposicion del alumno a traves de objetos de aprendizaje directamente relacionados con el contenido de los problemas de estudio. La metodologia se ha implantado en dos asignaturas muy diferentes: Mecanica de fluidos de Grado de Ingenieria Electrica de la EPSA; y la asignatura Dispersion de Contaminantes en Agua y en Atmosfera del Master Universitario en Ingenieria Industrial con unos resultados muy positivos.