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Issue:
Central-Upwind Scheme for Conservation Laws and Convection-Diffusion Equations
Author(s):
LIU Caixia
,
FENG Jianhu
Pages:
23
-
26
Year:
2004
Issue:
3
Journal:
AERONAUTICAL COMPUTER TECHNIQUE
Keyword:
双曲守恒律
;
中心迎风
;
CWENO
;
Abstract:
提出了一种新的求解双曲守恒律方程(组)的四阶半离散中心迎风差分方法.空间导数项的离散采用四阶CWENO的构造方法,使所得到的新方法在提高精度的同时,具有更高的分辨率.使用该方法产生的数值粘性同阶要比交错的中心格式小,而且由于数值粘性与时间步长无关,从而时间步长可根据稳定性需要尽可能的小.
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