Location:
Classroom 10, Alrick Building, King's Buildings
Date:
On the leading edge vortex of thin wings - Mr Abel Arredondo
Abstract
On thin wings, the sharp leading edge triggers laminar separation followed by reattachment, forming a Leading Edge Vortex (LEV). This flow feature is of paramount importance because, if periodically shed, it leads to large amplitude load fluctuations, while if stably attached to the wing, it can provide lift augmentation. We found that on asymmetric-spinnaker type yacht sails, the LEV can be stable despite the relatively low sweep (30). This finding, which was recently predicted numerically by Viola et al. (Ocean Eng., 2014; 90:93-103), has been confirmed through current flume tests on a 1:115th model scale sail. Forces were measured and Particle Image Velocimetry was performed on four horizontal sail sections at a Reynolds number of 1.7x104. Vortex detection revealed that the LEV becomes progressively larger and more stable towards the highest sections, where its axis has a smaller angle with respect to the freestream velocity. Mapping the sail section on a rotating cylinder through a Joukowski transformation, we quantified the lift augmentation provided by the LEV on each sail section. These results open up new sail design strategies based on the manipulation of the LEV and can be applicable to the wings of unmanned aerial vehicles and underwater vehicles.
Abel Arredondo Biography
Abel was awarded a master’s degree in Sustainable Energy Systems in the University of Edinburgh, UK in 2014, with his thesis titled "On the progress on the design of a self-damping Flettner rotor". He previously worked several years as a wireline field engineer in Schlumberger and got his BSc in Mechatronics engineering in Tecnológico de Monterrey, Mexico with a semester abroad in Hochschule Furtwangen University, Germany. In 2014 he was awarded a scholarship by Conacyt (Consejo Nacional de Ciencia y Tecnología) to start a PhD under the supervision of Dr. Ignazio Maria Viola. His PhD project aims to detect experimentally the leading edge vortex (LEV) in a spinnaker and ways to alter the behaviour of the LEV. The fields of application of this research include yacht racing and novel wing/blade designs. Abel has obtained a travel grant by the APS-DFD External Affairs Committee to present his work at the 69th Annual Meeting of the APS Division of Fluid Dynamics, in November 2016. Abel has presented his work at the 29th Scottish Fluid Mechanics Meeting 2016, XIV Symposium of Mexican Students and Studies 2016 and the UK Fluids Conference 2016. He has previously presented at the Engineering School Research Conference for Second Year PhD Students in University of Edinburgh 2016 and at the Department of Hydrodynamic Systems in the Technical and Business University in Budapest 2016. He is also part of the Consulting Team for the career of Mechatronic Engineers in Tecnologico de Monterrey, campus Cuernavaca, Mexico.
Control of Wave Energy Converters using Artificial Intelligence - Mr Enrico Anderlini
Abstract
After a brief background on me, the presentation willcover some of the aspects of my EngD project. Firstly, the problem of the control of wave energy converters will be summarised. In particular, the dependence of most state-of-the-art control strategies on models of the system dynamics will be highlighted as an issue. Then, I will introduce a couple of techniques taken from artificial intelligence that have been used to address this problem. A case study will also be brought forward for greater clarity. Finally, the presentation will conclude with some comments on how this new methods can help your research in different fields, such as wind and tidal energy and even smart grids.
Enrico Anderlini Biography
Enrico Anderlini studied for his Master of Engineering in naval architecture at the University of Southampton. During his studies, he spent a semester in Germany on an Erasmus exchange program at the Technical University of Hamburg-Harburg. He is currently a last year IDCORE student, with his project being sponsored by Wave Energy Scotland.
Seminar Info
There will be a host of hot beverages, sandwiches and cakes available from 12:45pm. We look forward to welcoming you all to the Seminar.
Further Information
