A numerical simulation is performed on the acoustic scattering from a circular vortex. Perturbed linearized compressible Euler equations for the perfect gas is used as the governing equations. A symplectic integration method and the compact finite difference schemes are applied to these equations. Two model flows are considered to approximate isolated circular vortex. They are the Rankine vortex and the Burgers vortex. In the case radial velocity distribution is modeled by a Rankine vortex, overall agreement of the pressure field computed by the present study and the previous studies is good. Acoustic wave interference patterns for the case of the Burgers vortex is compared with the case velocity profile is modeled by the Rankine vortex.
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