Accession Number : ADA256622


Title :   Review of Preconditioning Methods for Fluid Dynamics


Descriptive Note : Contractor rept.


Corporate Author : INSTITUTE FOR COMPUTER APPLICATIONS IN SCIENCE AND ENGINEERING HAMPTON VA


Personal Author(s) : Turkel, Eli


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/a256622.pdf


Report Date : Sep 1992


Pagination or Media Count : 36


Abstract : We consider the use of preconditioning methods to accelerate the convergence to a steady state for both the incompressible and compressible fluid dynamic equations. Most of the analysis relies on the inviscid equations though some applications for viscous flow are considered. The preconditioning can consist of either a matrix or a differential operator acting on the time derivatives. Hence, in the steady state the original steady solution is obtained. For finite difference methods the preconditioning can change and improve the steady state solutions. Several preconditioners previously discussed are reviewed and some new approaches are presented. Preconditioning, Low Mach, Euler equations.


Descriptors :   *FLUID DYNAMICS , STEADY STATE , DYNAMICS , TIME , CONVERGENCE , APPROACH , FLUIDS , FLOW , EQUATIONS


Subject Categories : Fluid Mechanics


Distribution Statement : APPROVED FOR PUBLIC RELEASE