Structural Acoustic Modeling and PML's in COMSOL Multiphysics

M. Zampolli
NATO Undersea Research Centre, La spezia

In water we can’t see far, because light and electromagnetic waves are absorbed over relatively short distances. In contrast, sound travels very well in water In fact it is well known that marine mammals rely on sound for communication over large distances, and some of them even use sound to locate their target while hunting.

In this presentation we provide an overview of the principles of SONAR and Underwater Acoustics. We present the Structural Acoustic Multiphysics Problem and explain why it is computationally expensive.

In addition we also present methods and strategies for solving the Structural Acoustic Multiphysics Problem, and explain how to use Perfectlt Matched Layers (PMLs) in Computer Aided simulations.

Keynote speaker's biography: Mario Zampolli joined the NATO Undersea Research Centre in 2001, after earning a PhD. in Mechanical Engineering from Boston University, with acoustics, fluid dynamics and wave physics as major subject areas. Prior to the doctoral degree, Dr. Zampolli earned an Italian Laurea degree in Applied and Theoretical Mathematics (1996) from the University of Bologna, with focus on control theory and aerodynamics. At the NATO Undersea Research Centre, Dr. Zampolli works in the target echo modeling group of the Expeditionary Mine Countermeasures and Port Protection Department. His research interests include mathematical simulation techniques for target echoes in shallow water environments, physics-based target echo classification, and target scattering experiments.

Mario Zampolli was one of the keynote speakers at the COMSOL User's Conference, fall 2006 in Milan.