Direct numerical simulation of a recorder.
The aeroacoustics of a recorder are studied using a direct numerical simulation based on the Navier-Stokes equations in two dimensions. Spatial maps for the air pressure and velocity give a detailed picture of vortex shedding near the labium. Changes in the spectrum as a result of variations in the blowing speed are also investigated. The results are in good semi-quantitative agreement with general results for these phenomena from experiments.
Department of Physics, Purdue University, West Lafayette, Indiana 47907, USA. giordano@purdue.edu
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D000162:Acoustics; D000399:Air Pressure; D003198:Computer Simulation; D008962:Models, Theoretical; D009038:Motion; D009146:Music; D009716:Numerical Analysis, Computer-Assisted; D013016:Sound; D013997:Time Factors