Sound Generation by a Turbulent Flow in Musical Instruments - Multiphysics Simulation Approach -
Abstract
Total computational costs of scientific simulations are analyzed between direct numerical simulations (DNS) and multiphysics simulations (MPS) for sound generation in musical instruments. In order to produce acoustic sound by a turbulent flow in a simple recorder-like instrument, compressible fluid dynamic calculations with a low Mach number are required around the edges and the resonator of the instrument in DNS, while incompressible fluid dynamic calculations coupled with dynamics of sound propagation based on the Lighthill's acoustic analogy are used in MPS. These strategies are evaluated not only from the viewpoint of computational performances but also from the theoretical points of view as tools for scientific simulations of complicated systems.
Keywords
Cite
@article{arxiv.0709.0787,
title = {Sound Generation by a Turbulent Flow in Musical Instruments - Multiphysics Simulation Approach -},
author = {Taizo Kobayashi and Toshiya Takami and Kin'ya Takahashi and Ryota Mibu and Mutsumi Aoyagi},
journal= {arXiv preprint arXiv:0709.0787},
year = {2007}
}
Comments
6 pages, 10 figure files, to appear in the proceedings of HPCAsia07