Finite Element MethodIncompressible FlowWater CurrentsThis chapter focuses on the development and application of the parallel spectral element models for the incompressible Navier-Stokes equations and the shallo
spectral-elementmethod网络谱元法;谱元素法 网络释义 1. 谱元法 2.1.2.5 谱元法(Spectral-Element Method)54 2.1.2.6 谱差法(Spectral-Finite Difference Method)54 2.1.2.7 元…cdmd.cnki.com.cn|基于1 个网页 2. 谱元素法...低频段( 1 Hz )已有高度掌握三维波场行为的谱...
关于间断伽辽金谱元法(Discontinuous Galerkin Spectral Element Method, DGSEM) ,英文资料介绍较多,大概在2010年前后相关的论文才比较丰富。该方法集标准间断伽辽金(Discontinuous Galerkin, DG)支持非结构网格的优势和谱元法(Spectral Element Method, SEM)的低计算量下的高精度优势于一身,同时又有较为统一的模板来离...
为方便对解进行拉格朗日插值和高斯正交求积,需要将坐标 x 变换到 \left[ -1,1 \right] 区间内。1. 一维情况取一维网格的端点 x_1 和 x_2 ,对任意 x\in \left[ x_1,x_2 \right] 内的坐标 x 进行仿射变换到定义在 …
The method combines the flexibility of a finite element method with the accuracy of a spectral method. One uses a weak formulation of the equations of motion, which are solved on a mesh of hexahedral elements that is adapted to the free surface and to the main internal discontinuities of the...
谱元法 SEM(spectral element method)基于弹性力学方程弱形式基础之上,在有限单元上进行谱展开,从而使该方法具备了有限元适应任意复杂介质模型的韧性和伪谱法的精度,该方法又被称为高阶有限元方法或伪谱法的域分解 谱元法(SEM),最初是Patera在1984年计算流体力学中提出. 它在有限元上进行谱展开,所以具有有限元方法...
numerical method that has its origins in computational fluid dynamics. One uses a weak formulation of the equations of motion, which are solved on a mesh of hexahedral elements that is adapted to the free surface and to the main internal discontinuities of the model. The wavefield on the ...
Electrical engineering Spectral element method for forward and inverse problems in electrical impedance tomography (EIT) and thermoacoustic tomography (TAT) DUKE UNIVERSITY Qing H. Liu LimKim HwaIn this thesis, two imaging modalities, Electrical Impedance Tomography (EIT) and Thermoacoustic Tomography (...
The spectral-element method, a numerical scheme that combines the accuracy of spectral methods with the versatility of finite element techniques, has been employed to study the mechanisms of mixing and chemical reactions in, a diffusion flame stabilized on a two-dimensional planar mixing layer. The...
将插值看作一种函数逼近的方法,这与“拟合”有一些区别 拟合与插值的区别?。直观理解,插值要求所建立的连续定义域函数y~(xi) ,在数据点 xi 上其值 y~(xi) 等于观测点值 yi 。而拟合只要求在每一个数据点 xi 上与建立的连续定义域函数 y~(xi) 之间的某种偏差 ||y~(xi)−yi|| 最小(一致逼近-偏差...