We will continue our seminar series on 15th May 2024
On site: Salón de Grados (Leganés)
For the next event in the Aerospace PhD Seminar Series, we will have the pleasure of hosting Dr. Andrea Sciacchitano, researcher at Delft University of Technology.
The event will take place in the Salon de Grados on Wednesday, May 15th at 15:00 pm and will be streamed (Online).
Dr. Andrea Sciacchitano is Associate Professor at the Delft University of Technology, the Netherlands, where he received his doctoral degree in 2014 on the topic “Uncertainty Quantification in Particle Image Velocimetry and Advances in Time-Resolved Image and Data Analysis”. His research focuses on measurement techniques for the quantitative visualization of fluid flows. In the recent years, Andrea and his team have developed the Large-Scale Particle Image Velocimetry (PIV) and the Robotic PIV techniques. Furthermore, Andrea has introduced the Ring-of-Fire concept, which provides unprecedented on-site aerodynamic measurements for transiting objects. He is currently scientific director of the TU Delft Sports Engineering Institute and chairman of the Knowledge Network Committee of the European Research Community on Flow, Turbulence and Combustion (ERCOFTAC). In his career, he has co-author over 50 publications in international scientific journals and two book chapters.
“Large-Scale PIV for on-site Aerodynamics. Development and applications of the Ring of Fire concept”
Abstract:
Particle Image Velocimetry, shortly PIV, is the leading measurement technique for the quantitative visualization of fluid flows. Based on tracking the motion of micrometric particles inserted into the flow and carried by the fluid, PIV enables unveiling the dynamics of complex and turbulent flows. However, for over two decades PIV has been confined to the lab environment and small measurement domains, as small as the size of a mobile phone, thus precluding its applicability to problems of practical interest. The introduction of sub-millimetre Helium-Filled Soap Bubbles (HFSB) as flow tracers has yielded a step-increase in the size of the measurement domain up to O(1 m3), thus enabling unprecedented flow measurements around objects as large as the human body. In this talk, I will discuss the development of the so-called Ring of Fire concept, whereby three-dimensional flow measurements are performed in the wakes of transiting objects to characterize the main flow structures and their contributions to the aerodynamic forces. I will show how the application of the conservation of momentum in a control volume moving with the object allows the determination of the aerodynamic drag. The talk will showcase applications in the field of sports aerodynamics, in particular cycling, ice-skating and running, as well as in the automotive sector, where the Ring of Fire concept has been employed both for validation of numerical simulations by Computational Fluid Dynamics as well as for the study of the diffuser flow.
The seminar will begin at 15:00 pm and will take place in the Salon de Grados, EPS Leganés.
No previous registration is required.
PhD in Aerospace Engineering UC3M 