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Modeling flue pipes: subsonic flow, lattice . . .

By Panayotis A. Skordos

Abstract

The problem of simulating the hydrodynamics and the acoustic waves inside wind musical instruments such as the recorder, the organ, and the flute is considered. The problem is attacked by developing suitable local-interaction algorithms and a parallel simulation system on a cluster of non-dedicated workstations. Physical measurements of the acoustic signal of various flue pipes show good agreement with the simulations. Previous attempts at this problem have been frustrated because the modeling of acoustic waves requires small integration time steps which makethesimulation very compute-intensive. In addition, the simulation of subsonic viscous compressible flow at high Reynolds numbers is susceptible to slow-growing numerical instabilities which are triggered by high-frequency acoustic modes

Topics: Boltzmann, and parallel distributed computers
Year: 1995
OAI identifier: oai:CiteSeerX.psu:10.1.1.18.9687
Provided by: CiteSeerX
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