matlab的欧拉方法代码BEM_flow_simulation MATLAB上的计算流体力学: 目的是使用边界元素方法模拟任何障碍物附近或周围的任何形式的流动 使用BEM绕圆柱障碍物和接近均匀战争的潜在流动 非粘性势流的假设适用于导航斯托克斯方程(Euler方程),使用边界元方法,该代码模拟了在均匀垂直壁附近的尺寸稳定的圆柱障碍物周围的流动。 该系统不受其他方向的限制。 该代码是流体力学硕士1实习的主题,并且作为大型项目的第一块砖,该项目用于模拟复杂非均匀障碍物周围的粘性流动,因此可以自由继续。 类“ pot_flow_class”模拟垂直于垂直壁(两个障碍物之间的距离为H)附近圆柱2D障碍物(无量纲半径r = 1)附近的该势流。 流速为U = 1(无量纲)。 使用边界元素方法的第二层。 这样的流动的精确解决方案的代码允许验证无垂直壁模拟。
2021-08-16 08:17:22 708KB 系统开源
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采用边界元法研究了具有非完好界面条件的二维三角晶格声子晶体的带隙特性。结合Bloch周期原理, 针对二组元三角晶格固-固体系声子晶体推导了含 非完好界面条件的边界元特征值方程。基于该方程, 计算了含有不同截面散射体(圆形截面、椭圆截面、正方截面)的能带结构, 讨论了晶格对称性对能带结构 的影响; 并且分析了圆形截面散射体填充比的变化对带隙位置及宽度的影响。通过与其它计算方法的结果比较, 说明边界元法可以有效准确地计算具有不同界 面条件和不同散射体形状的声子晶体的能带结构。而且, 非完好界面条件的声子晶体可以在低频打开完全带隙, 尤其圆形截面最为明显。
2021-08-09 17:19:59 1.73MB 声子晶体 边界元法 非完好界 能带结构
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This is a sequel to the book “Programming the Boundary Element Method” by G. Beerpublished by Wiley in 2001. The scope of this book is different however and this is reflected in the title. Whereas the previous book concentrated on explaining the implementation of a limited range of problems into computer code and the emphasis was on programming, in the current book the problems covered are xtended, the emphasis is on explaining the theory and computer code is not presented for all topics. The new topics covered range from dynamics to piezo-electricity. However, the main idea, to provide an explanation of the Boundary Element Method (BEM), that is easy for engineers and scientists to follow, is retained. This is achieved by explaining some aspects of the method in an engineering rather than mathematical way. Another new feature of the book is that it deals with the implementation of the method on parallel processing hardware. I. M. Smith, who has been involved in programming the finite element method for decades, illustrates that the BEM is “embarrassingly parallelisable”. It is shown that the conversion of the BEM programs to run efficiently on parallel processing hardware is not too difficult and the results are very impressive, such as solving a 20 000 element problem during a “coffee break”. Due to the fact that, compared to the Finite Element Method, a significantly smaller group of people are working in this field the development of the method is lagging considerably behind. The often quoted comparison that the method is a “Cinderella”, dominated by her “big sister”, the Finite Element Method, and whose beauty is hidden away, is still true and we hope that the reader will see the beauty of the method in the examples on industrial applications and the advanced topics presented at the end. The book includes some innovative development work carried out by the small but very active group at the Institute for Structural Analysis, Graz University of Technology, Austr
2021-08-03 20:43:36 5.15MB 边界元 代码
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作为边界元方法及其在声学问题中的应用的介绍,并继续完成计算模型的开发。
2021-07-07 17:15:12 106B 计算机科学
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边界元法边界元法边界元法边界元法边界元法
2021-06-21 20:15:03 2.16MB BEM
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边界元法基础,王元淳,上海交通大学出版社。内附Fortran程序
2021-05-07 08:54:24 6.39MB 边界元,
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特殊正交各向异性体的边界元法分析_米东.caj
2021-04-07 18:03:33 75KB 文献
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离心泵叶轮全三维势流的间接边界元法研究.rar
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简要得讲了讲有限元和边界元算法,我研究的也不多呀。
2019-12-21 22:00:38 972KB FEM BEM 有限元 边界元
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PROGRAME FOR SOLUTION OF REISSNER'S PLATE BENGDING PROBLEMES BY THE BOUNDARY ELEMENT METHOD
2019-12-21 21:46:45 26KB Fotran
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