Dynamic Similarity in Hydrodynamics

This lecture discusses dynamic similarity in hydrodynamics, focusing on the scaling of forces exerted by incoming flows on plates, dimensional analysis, and non-dimensional relations for incompressible flow around obstacles. It covers topics such as wake behind cylinders and spheres, influence of rugosity on drag, celerity of domino waves, power of cars as a function of velocity, and predicted bird velocity. The lecture also explores the equilibrium of forces in rowers, non-dimensional Navier-Stokes equations, Reynolds number, and simulations using COMSOL Multiphysics. The instructor emphasizes the importance of reference scales, geometric similarity, and the non-dimensional parameters in fluid dynamics.