Publication Date:
2019-07-13
Description:
Analysis tools are needed to guide the development and evaluate the performance of multigrid solvers for the fluid flow equations. Classical analysis tools, such as local mode analysis, often fail to accurately predict performance. Two-grid analysis tools, herein referred to as Idealized Coarse Grid and Idealized Relaxation iterations, have been developed and evaluated within a pilot multigrid solver. These new tools are applicable to general systems of equations and/or discretizations and point to problem areas within an existing multigrid solver. Idealized Relaxation and Idealized Coarse Grid are applied in developing textbook-efficient multigrid solvers for incompressible stagnation flow problems.
Keywords:
Fluid Mechanics and Thermodynamics
Type:
AIAA Paper 2004-2531
,
34th AIAA Fluid Dynamics Conference and Exhibit; Jun 28, 2004 - Jul 01, 2004; Portland, OR; United States
Format:
application/pdf
