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Chebyshev Finite Spectral Method With Extended Moving Grids
Author(s): ZHAN Jie-min, LI Yok-sheung, DONG Zhi
Pages: 365-
374
Year: 2011
Issue:
3
Journal: Applied Mathematics and Mechanics
Abstract: 给出了基于非均匀网格的Chebyshev有限谱方法.提出了可生成两种类型扩展型动网格的均布格式一种类型的网格被用来提高波面附近的分辨率,另一种类型则用在梯度较大的流动区域.由于采用Chebyshev多项式作为基函数,该方法具有高阶精度.从上个时间步到当前时间步,两套不均匀网格间的物理量采用Chebyshev多项式插值.为使方法在时间离散方面保持高精度,采用了Adams-Bashforth预报格式和...
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