2007/09/06 by Taizo Kobayashi, Kobayashi, Taizo, Toshiya Takami +7
Computer Science · Engineering · #Aerodynamics and Acoustics in Jet Flows #Computational Engineering #Computational Physics (physics.comp-ph) #FOS: Computer and information sciences #FOS: Physical sciences #Finance #Fluid Dynamics (physics.flu-dyn) #Fluid Dynamics and Turbulent Flows #Music Technology and Sound Studies #and Science (cs.CE)
paper · pdf · doi:10.48550/arxiv.0709.0787
openalex publication_date 2007/09/06 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
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.