Fluid-Structure Interactions of Wind on a Plant
Dr. Frédérick P. Gosselin
Associate Professor, Mechanical Engineering, Polytechnique Montréal
Visiting Associate Professor, UBC Department of Botany
When: May 27, 2019 | 2-3 PM
Where: CEME 2202 | 6250 Applied Science Lane
Abstract: Plants live in constantly moving fluid, whether air or water. In response to the loads associated with fluid motion, plants bend and twist, often with great amplitude. These large deformations are not found in traditional engineering application and thus necessitate new specialised scientific developments. Studying Fluid-Structure Interactions (FSI) in botany, forestry and agricultural science is crucial to the optimisation of biomass production for food, energy, and construction materials. FSI are also central in the study of the ecological adaptation of plants to their environment. This seminar presents past work in my lab on drag reduction by reconfiguration, considering 2D deformation, poroelasticity, torsion, and chirality. I will also present ongoing work on flutter and vortex-induced vibrations in plants.
Biography: Frédérick P. Gosselin specialises in slender structure mechanics. He is an Associate Professor in the Mechanical Engineering Department of Polytechnique Montréal (appointed in 2012). He obtained his M.Eng. from McGill University in Montreal in 2006 under the supervision of Michael P. Païdoussis for his work on fundamental fluid-structure interactions. He then obtained a Doctoral degree from École Polytechnique in Palaiseau, France (2009) under the supervision of Emmanuel De Langre for his work on the mechanisms of fluid-structure interactions in fluid flow over vegetation. He was then awarded an FQRNT post-doctoral fellowship at Polytechnique Montréal (2010-11). He studies a variety of slender structures ranging from tree branches and leaves, spider silk, and cell membranes to aircraft wings and hydraulic turbines. He holds an NSERC Discovery grant to study plant biomechanics. Moreover, Prof. Gosselin develops new biomimetic 3D printing technologies for making spider silk-inspired fibers. He leads a collaborative industrial project on modelling numerically the shot peen forming of thin aluminum structures with residuals stresses. These simulations are highly versatile, he is currently spending his sabbatical year (2018-19) at the Botany Department of UBC to adapt these metal forming models to simulate biological growth in kelp blade morphogenesis.