High Order Accurate Finite-Difference Methods: as seen in OVERFLOW

Abstract

Conventional nite-di erence methods are the main workhorse of NASA's OVERFLOW code. Recent enhancements in the development, implementation and analysis of simple high-order accurate nite-di erence techniques within OVERFLOW are documented here. Results are presented for simple vortex propagation to demonstrate the salient features of the methods, and more complex three-dimensional rotorcraft ows are used to validate their usefulness in real applications.