Improved Block Interface Conditions for Aeroacoustic Problems with Gridn Discontinuities

摘要

Aeroacoustic simulations are extremely sensitive to numerical errors. To achieve a high order of accuracy, optimized finite difference schemes, such as the well-known dispersion-relation-preservation schemes, and multiblock structured meshes are often used. Challenges appear in communicating the flow information near grid discontinuities between neighboring blocks, and sophisticated interface treatments are required. The characteristic interface condition has been successful in applications in p