Computational solutions of unsteady viscous flows with oscillating boundaries

摘要

This paper presents recent computational solutions for two- and three-dimensional unsteady viscous flows with oscillating boundaries based on: (i) an enhanced hybrid-spectral method, and (ii) time-integration methods using artificial compressibility. A comparison is made between the results obtained with a mean-position analysis and with a formulation based on a time-dependent coordinate transformation, better suited for large amplitude oscillations.