ABSTRACT:
In spite of its fairly recent development, the lattice Boltzmann method (LBM) has quickly become a popular and yet powerful tool in fluid dynamics and acoustics. Differently from the traditional methods based on the Continuum Theory (e.g. finite volumes, finite elements, finite differences, to name but a few), LBM captures the temporal behaviour of a fluid by means of two basic operations on the particle level, namely the propagation and collision of the fluid particles. Some advantages of LBM include its straightforward approach to complex boundary conditions and the facility to be computed in parallel processing schemes. Moreover, LBM is capable of resolving, in a single computational structure, phenomena involving very different scales, such as the interaction between flow and acoustic fields. This lecture will present a brief introduction to the LBM theory, discuss essential advantages and limitations of the method, and focus on practical applications involving acoustic problems.
ABOUT ANDREY DA SILVA:
Dr. Andrey R. da Silva is an Assistant Professor at the School of Acoustical Engineering, Federal University of Santa Maria - Brazil. He received a BSc degree (2002) and an MSc degree in Sound and Vibration (2004) from the Federal University of Santa Catarina - Brazil, and a PhD in Music Technology from McGill University (2008), where he was also a student member of CIRMMT. Prior to joining the faculty, he was a post-doctoral researcher at the Computational Acoustic Modelling Laboratory, McGill University (2009), and an associate researcher at the Vibroacoustic Laboratory - UFSC (2010). Dr. da Silva is currently a member of the Technical Committee in Musical Acoustics of ASA. His research interests involve musical acoustics, acoustics of internal flows and numerical techniques in vibration and acoustics. At the present time, Dr. da Silva conducts research on machinery noise control, numerical methods in sound and vibration, and room acoustics.