TY - JOUR
T1 - Construction and Analysis of an Adapted Spectral Finite Element Method to Convective Acoustic Equations
AU - Hüppe , Andreas
AU - Cohen , Gary
AU - Imperiale , Sébastien
AU - Kaltenbacher , Manfred
JO - Communications in Computational Physics
VL - 1
SP - 1
EP - 22
PY - 2018
DA - 2018/04
SN - 20
DO - http://doi.org/10.4208/cicp.250515.161115a
UR - https://global-sci.org/intro/article_detail/cicp/11143.html
KW - 
AB - <p style="text-align: justify;">The paper addresses the construction of a non spurious mixed spectral finite
element (FE) method to problems in the field of computational aeroacoustics. Based
on a computational scheme for the conservation equations of linear acoustics, the extension
towards convected wave propagation is investigated. In aeroacoustic applications,
the mean flow effects can have a significant impact on the generated sound
field even for smaller Mach numbers. For those convective terms, the initial spectral
FE discretization leads to non-physical, spurious solutions. Therefore, a regularization
procedure is proposed and qualitatively investigated by means of discrete eigenvalues
analysis of the discrete operator in space. A study of convergence and an application
of the proposed scheme to simulate the flow induced sound generation in the process
of human phonation underlines stability and validity.</p>