Use of a Dynamic Grid Adaptation in the Asymmetric Weighted Residual Method
作者:
GrafU.,
RomstedtP.,
WernerW.,
期刊:
Nuclear Science and Engineering
(Taylor Available online 1986)
卷期:
Volume 92,
issue 1
页码: 66-70
ISSN:0029-5639
年代: 1986
DOI:10.13182/NSE86-A17866
出版商: Taylor&Francis
数据来源: Taylor
摘要:
AbstractA dynamic grid adaptive method has been developed for use with the asymmetric weighted residual method. The method automatically adapts the number and position of the spatial mesh points as the solution of hyperbolic or parabolic vector partial differential equations progresses in time. The mesh selection algorithm is based on the minimization of the L2norm of the spatial discretization error. The method permits the accurate calculation of the evolution of inhomogeneities, like wave fronts, shock layers, and other sharp transitions, while generally using a coarse computational grid. The number of required mesh points is significantly reduced, relative to a fixed Eulerian grid. Since the mesh selection algorithm is computationally inexpensive, a corresponding reduction of computing time results.
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