Meshfree simulation of acoustic scattering

In regard to acoustic scattering, finite element analysis is a popular tool to resolve acoustic scattering fields of considered objects. However, numerical results from finite element analysis would seriously suffer from the adverse influence of the well-known numerical pollution effect at high wavenumbers, leading to unreliable simulations of acoustic scattering. In this work, the modified radial point interpolation meshfree technique with the modified node selection scheme is adopted to study acoustic scattering problem of an infinite and rigid cylinder using the regular and irregular node distributions. Numerical results reveal that the present method can be more accurate and reliable in simulations of acoustic scattering than finite element analysis and the original radial point interpolation method, especially at high wave numbers.