• bio inspired
• bio-inspired
• BIoinspired
• CFD
• Computational Fluid Dynamics
• Comsol
• diodicity
• Fluidodynamics
• Tesla Valve

This thesis investigates hydraulic asymmetry-diodicity-in channels with asymmetric obstacles, inspired by shark intestines and lymphatic valves. Diodicity, defined as the ratio of pressure drops for identical flow rates in opposite directions, measures directional bias in hydraulic resistance. Two-dimensional (2D) channels were analyzed with rigid and deformable obstacles. Rigid obstacles produced limited diodicity due to small recirculation zones and inertial effects, while deformable obstacles, coupled via a fluid–structure interaction (FSI) framework, enhanced diodicity through geometric reconfiguration, with optimal performance depending on inlet velocity and obstacle stiffness.
A simplified annular model confirmed that channel geometry is the main factor governing unidirectional flow. Preliminary three-dimensional simulations with conical and helical geometries confirm the persistence of these mechanisms, highlighting the role of local geometry and deformation, and providing a framework for further investigation of asymmetric flow in complex, bio-inspired systems.