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Alternative TitleA Kind of Non-Reflection Numerical Boundary Scheme for the Propagation of Atmosphere Waves
刘晓; 徐寄遥; 北京8701信箱
Source Publication空间科学学报
Keyword无反射数值边界格式 光滑拟合外推边界格式 大气波动 虚假反射
Other AbstractAccording to the fundamental principle of non-reflection boundary conditions and consid-eying the fact that high order numerical boundary schemes can decrease the boundary error and spu-rious reflections, in this paper,a high order Smooth Fitting Extrapolate Boundary Scheme (SFEBS)is proposed by using the method of the least squares for data fitting.Since the governing equations for atmosphere movement can be reduoed to a connective equation,so,to verify the validity of SFEBS,the propagation of one dimensional wave packet and shock governed by connective equation are sim-ulated and compared with the boundary scheme that is based on the idea of Taylor series expansion(TEBS hereafter). The numerical results show that, the spurious reflections that calculated by high order SFEBS is about 1/6 of that calculated by the same order TEBS. This shows that SFEBS is a better numerical boundary scheme for outflow boundary.SFEBS will be a very good numerical boundary scheme for the numerical simulation of atmosphere waves with wide spectrum
Indexed ByCSCD
Funding Project中国科学院空间科学与应用研究中心
Citation statistics
Cited Times:3[CSCD]   [CSCD Record]
Document Type期刊论文
Corresponding Author北京8701信箱
Recommended Citation
GB/T 7714
刘晓,徐寄遥,北京8701信箱. 大气波动传播问题的一种无反射数值边界格式[J]. 空间科学学报,2006,26(2):111-117.
APA 刘晓,徐寄遥,&北京8701信箱.(2006).大气波动传播问题的一种无反射数值边界格式.空间科学学报,26(2),111-117.
MLA 刘晓,et al."大气波动传播问题的一种无反射数值边界格式".空间科学学报 26.2(2006):111-117.
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