M. Shirazaki et G. Yagawa, Large-scale parallel flow analysis based on free mesh method: a virtually meshless method, COMPUT METH, 174(3-4), 1999, pp. 419-431
Citations number
18
Categorie Soggetti
Mechanical Engineering
Journal title
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
In this paper, large-scale parallel computing based on a virtually meshless
method called the 'free mesh method' for incompressible viscous flow with
three-million D.O.Fs or one-million nodes is presented. By using the free-m
esh method, a seamless system from the stage of nodal information input wit
hout node-element connectivity information to the stage of the system equat
ions solver is successfully developed. The system can compute the global ma
ss, advection, diffusion, gradient and divergence matrices node-by-node ind
ependently from only nodal information on a parallel computer. With techniq
ues of node generation based on nodal density control and a kind of hash so
rting method for search nodes, a lid-driven cavity problem having three-mil
lion D.O.Fs can be successfully solved. In the problem, the process of cons
tructing system equations from nodal information by the free-mesh method, r
equires about 142 s using 64 processors of the Hitachi SR2201. (C) 1999 Els
evier Science S.A. All rights reserved.