Multigrid methods for numerical simulation of laminar diffusion flamesThis paper documents the result of a computational study of multigrid methods for numerical simulation of 2D diffusion flames. The focus is on a simplified combustion model, which is assumed to be a single step, infinitely fast and irreversible chemical reaction with five species (C3H8, O2, N2, CO2 and H2O). A fully-implicit second-order hybrid scheme is developed on a staggered grid, which is stretched in the streamwise coordinate direction. A full approximation multigrid scheme (FAS) based on line distributive relaxation is developed as a fast solver for the algebraic equations arising at each time step. Convergence of the process for the simplified model problem is more than two-orders of magnitude faster than other iterative methods, and the computational results show good grid convergence, with second-order accuracy, as well as qualitatively agreement with the results of other researchers.
Document ID
19930038651
Acquisition Source
Legacy CDMS
Document Type
Conference Paper
Authors
Liu, C. (NASA Lewis Research Center Cleveland, OH, United States)
Liu, Z. (NASA Lewis Research Center Cleveland, OH, United States)
Mccormick, S. (Colorado Univ. Denver, United States)
Date Acquired
August 16, 2013
Publication Date
January 1, 1993
Subject Category
Inorganic And Physical Chemistry
Report/Patent Number
AIAA PAPER 93-0236
Meeting Information
Meeting: AIAA, Aerospace Sciences Meeting and Exhibit