08 février 2024

Webinar Manuel García-Villalba

Manuel García-Villalba is professor of Computational Fluid Mechanics at the Institute of Fluid Mechanics and Heat Transfer of TU Wien, Austria, since 2022. Previously, he was associate professor at Universidad Carlos III de Madrid, Spain, and has also worked at the Karlsruhe Institute of Technology, Germany, where he also did his PhD. His research focuses on computational fluid mechanics and its applications in engineering and biomedicine.
Fluid-structure interaction in some bioinspired problems: a numerical study

The motion of insects, birds or fish can be described as a fluid-structure interaction problem, in which one or more deformable bodies are immersed in a fluid. The dynamics of the bodies is a direct result of their hydrodynamic interaction with the surrounding fluid, which is driven by their deformation (active or passive). As a consequence, the resulting problem is a highly non-linear problem consisting of the coupling between the equations of the fluid motion and the equations of motion of the bodies. Moreover, these bodies are usually geometrically complex: they may have mobile appendages and/or they may be deformable and subject to large deformations. This geometrical variability/complexity poses additional problems when modelling this kind of problems, since the fluid-solid interface changes with time. In our group, we have developed a methodology to study bioinspired fluid structure interaction problems (https://doi.org/10.1016/j.jfluidstructs.2022.103519). In the talk we will briefly introduce the methodology and to illustrate its capabilities two applications will be presented. First, we will report simulations of the flow around spanwise-flexible wings in forward flight (https://doi.org/10.1017/jfm.2023.308). This is a rich problem which involves fluid-structure resonance and aerodynamic tailoring. Second, we will discuss hydrodynamic interactions of self-propelled flappers in tandem configuration (https://doi.org/10.1017/jfm.2021.918). In this problem, we will show how the performance of the follower flapper is influenced by hydrodynamic interactions with the wake of the leader flapper.

08 février 2024, 16h3017h30
Webinar (please contact F. Romano for the link)