Lecture
This lecture explores the physics of sound radiation from a pulsating sphere, focusing on assigning radial velocity to the sphere and computing the sound pressure radiated by the source. The instructor demonstrates the use of ComSol software to model the sphere's vibration, define material properties, set boundary conditions, and compute the pressure field. The lecture covers the steps to create the geometry, define materials, set up physics, and perform frequency domain computations. Additionally, the instructor explains how to visualize the pressure field, compute the radiation impedance, compare theoretical and simulated results, and analyze the pressure distribution as a function of distance.