Aircraft noise prediction and control is one of the most urgent and
challenging tasks worldwide. A hybrid approach is usually
considered for predicting the aerodynamic noise. The approach
separates the field into aerodynamic source and acoustic
propagation regions. Conventional CFD solvers are typically used to
evaluate the flow field in the source region. The FW-H equation is
used to extend the near-field CFD solution to the far-field
acoustic radiation. However the FW-H method requires the data on a
"complete control surface," which may be infeasible to accomplish
for most practical applications. Motivated by the need for the
accurate and efficient far-field prediction techniques, an advanced
computational methodology, Acoustic Intensity-Based Method (AIBM),
has been developed. This method is computational efficiency and
only needs the input data over an "open surface." In general, the
AIBM provides an effective alternative for the far-field acoustic
prediction of practical aeroacoustic problems.
General
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