Open AccessThe influence of joint geometry of toneholes with the main bore of wind musical instruments on their frequency characteristics
Author(s) -
R A Gerasimov
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/2090/1/012154
Subject(s) - multiphysics , curvature , radius , radius of curvature , geometry , drag , acoustics , frequency band , mechanics , physics , mathematics , engineering , finite element method , electrical engineering , computer science , antenna (radio) , thermodynamics , mean curvature , computer security , mean curvature flow
The article discusses the influence of geometric parameters (the presence and magnitude of the radius of curvature) at the junction of the toneholes with the main bore of the air column on the frequency characteristics of woodwind musical instruments. A theoretical calculation of the eigenfrequencies of an air column with one tonehole in the case of sharp edges has been carried out. The resonance frequencies were also found using computer simulation in the COMSOL Multiphysics 5.5 program for the case of sharp edges and joints with a radius of curvature. An empirical dependence of the frequency of the main tone of the air column on the radius of curvature of the edges of the tonehole is obtained. All simulation were carried out for two models: excluding and including viscous drag and thermal exchange losses.