DID YOU KNOW? DTIC has over 3.5 million final reports on DoD funded research, development, test, and evaluation activities available to our registered users. Click HERE
to register or log in.
The Application of Adaptive Mesh Refinement to the Numerical Simulation of Compressible Flow,
NATIONAL AIR INTELLIGENCE CENTER WRIGHT-PATTERSON AFB OH
Pagination or Media Count:
This article is based on the adaptive mesh refinement calculation methods developed by M.J.Berger and J.Oliger. It opts for the use of the concept of numerous units formed into a grid, used in solving hyperbolic type equation sets. It combines finite difference forms, opts for the use of Richardson extrapolation techniques to automatically carry out local truncation error estimates, and, for regions with low accuracy, produces new fine mesh local refinements or eliminates old fine mesh refinements which are no longer needed, in order to reach, in the minimum amount of operations, the specified accuracy requirements. Grids are capable of going down into a layer on layer refinement. On the basis of the layered sequence of coverage, each individual grid is a rectangular uniform grid or mesh in any direction desired. This set of algorithms is independent of difference forms used in solutions, is very easy, and combines various types of forms. AN
APPROVED FOR PUBLIC RELEASE