@Article{cmes.2017.113.086,
AUTHOR = {Yunpeng Ma, Lifeng Wang, Mingxu Yi},
TITLE = {Acoustic Scattering Performance for Sources in Arbitrary Motion},
JOURNAL = {Computer Modeling in Engineering \& Sciences},
VOLUME = {113},
YEAR = {2017},
NUMBER = {1},
PAGES = {89--108},
URL = {http://www.techscience.com/CMES/v113n1/27343},
ISSN = {1526-1506},
ABSTRACT = {In this paper, an analytical time domain formulation based on Ffowcs Williams-Hawkings (FW-H) equation is derived for the prediction of the acoustic velocity field generated by moving bodies. This provides the imposition of the Neumann boundary condition on a rigid scattering surface. In order to calculate the scattering sound pressure of the duct, a thin-body boundary element method (BEM) has been proposed. The radiate sound pressure is calculated using the acoustic analogy FW-H equation. The scattering effect of the duct wall on the propagation of the sound wave is presented using the thin-body BEM. Computational results for a pulsating sphere, dipole source, and a tail rotor verify the method. The sound pressure directivity and scattering effect are shown to demonstrate the applicability and validity of the approach.},
DOI = {10.3970/cmes.2017.113.086}
}