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利用变分原理的自适应网格技术被应用到两个有解析解的激波问题上,它能根据问题的求解,在解的大梯度区自动加密网格,从而非常成功地算出了激波。通过分析发现自适应网格技术在提高精度、减少运行时间方面显示了优良的性能。 相似文献
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A new time difference scheme which can use the data of past multi-time to determine its coefficients has been derived from the central and the forward difference used in numerical models. The computed result shows that this new scheme can improve the precision of time difference remarkably. 相似文献
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