Description: 利用matlab实现电磁场数值方法里面的有限差分与有限元法。-Using matlab to achieve numerical method of electromagnetic field inside the finite difference and finite element method. Platform: |
Size: 541696 |
Author:钱湘行 |
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Description: 电磁波、声波或地震波等数值模拟中常常会用到有限差分法，但是很多文章都只是泛泛而谈时间2阶，空间4阶等等如何用公式，本文给出了任意阶精度的泰勒展开与迭代公式。-Numerical simulation of electromagnetic, acoustic or seismic waves will often use the finite difference method, but many articles are just generalities time two bands, space, etc. How to order 4 formula, this paper presents the accuracy of any order Taylor expansion and iterative formula. Platform: |
Size: 504832 |
Author:suboy |
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Description: Cell centered (LAPc) and cell edge (LAPe) algorithms were developed to solve the static neutron diffusion
equation in 2D Cartesian geometry using Lagrange interpolation with the progressive polynomial approximation.
Two benchmark problems were used to test the algorithms the two-group TWIGL problem and
a one-group IAEA benchmark problem. The LAP algorithms showed to be more accurate than a finite
difference method (FDM) and for about the same level of accuracy, the LAP numerical methods have
an efficiency advantage because they have to solve for less number of unknowns. The LAP algorithms
showed more sensitivity to the mesh size than what QUANDRY results showed. Even though the FDMs
algorithm, for the calculation of keff, showed systematically to be less accurate than QUANDRY, LAPc,
and that LAPe, it was the only one that did not produce negative flux in any location for all the mesh
structures analyzed in the IAEA problem. Other variants of Platform: |
Size: 192512 |
Author:yangs |
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Description: Computational fluid dynamics has been a hot topic of research these last
forty years, and several books have been published on this topics. This book
concentrates on the numerical of Computational Fluid Mechanics, followed
by some focus of new development of classical methods, and to the recent
methods appearing in this field.
The present volume presents in nine chapters a selection of some
numerical methods used in computational fluid mechanics including:
mathematical models in computational fluid mechanics, numerical methods
in computational fluid mechanics, finite volume, finite difference, finite
element, spectral methods, smoothed particle hydrodynamics methods,
mixed-element-volume methods, free surface flow. The topics covered in this
book are wide ranging and demonstrate the extensive use in computational
fluid mechanics. Platform: |
Size: 7804928 |
Author:z.h.o.u.l.e.i |
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