Isoparametric finite element using cubic hermite polynomials for acoustics in duct components with flow

Authors

  • D.C. Stredulinsky Defence Res. Establ. Atlantic, Dartmouth, NS, Canada
  • A. Craggs

Keywords:

acoustic wave propagation, aeroacoustics, channel flow, finite element analysis, resonance, isoparametric finite elements, cubic hermite polynomials, finite element model, duct system components, acoustic resonant frequencies, hard walled cavities, acoustic propagation characteristics, duct bends, junctions, higher order mode propagation, convective effect, low Mach number air flow

Abstract

Describes the development of a new finite element model to analyse the propagation of sound through duct system components. The element model was first tested by predicting the acoustic resonant frequencies of hard walled cavities. It was then used to predict the acoustic propagation characteristics of duct bends and junctions, including higher order mode propagation in attached straight ducts, and the convective effect of low Mach number air flow

Additional Files

Published

1991-07-01

How to Cite

1.
Stredulinsky D, Craggs A. Isoparametric finite element using cubic hermite polynomials for acoustics in duct components with flow. Canadian Acoustics [Internet]. 1991 Jul. 1 [cited 2024 Jul. 23];19(3):3-15. Available from: https://jcaa.caa-aca.ca/index.php/jcaa/article/view/638

Issue

Section

Technical Articles