关于气动声学计算方法的文章

ABSTRACT
In contrast to computational aerodynamics, which has advanced to a fairly mature
state, computational aeroacoustics (CAA) has only recently emerged as a separate
area of study. Following a discussion of the classical field of aeroacoustics
as introduced by Lighthill, the paper provides an overview and analysis of the
problems associated with utilizing standard computational aerodynamics procedures
for acoustic computations. Numerical aspects of computing sound-wave
propagation are considered, including assessments of several schemes for spatial
and temporal differencing. Issues of particular concern in computing aerodynamically
generated noise, such as implementing surface and radiation boundary
conditions and algorithms for predicting nonlinear steepening and shocks, are
discussed. In addition, the paper briefly reviews alternatives to the conventional
finite-difference schemes, such as boundary-element and spectral methods and
the uncommon lattice-gas method.