python 有限元网格

生成有限元网格数据文件的Python代码如下：

from fipy import CellVariable, Gmsh3D, TransientTerm, DiffusionTerm, Viewer, MayaviClient
import pygmsh

with pygmsh.occ.Geometry() as geom:
    geom.characteristic_length_max = 0.1
    ellipsoid = geom.add_box([0.0, 0.0, 0.0], [1, 1, 1])
    mesh = geom.generate_mesh()
    mesh.write("D:\\desktop\\tiji\\zfx1.vtk")
    mesh = Gmsh3D(''' D:\\desktop\\tiji\\zfx1.vtk''' )
    print(mesh.cellCenters)

这段代码使用了fipy和pygmsh库来生成有限元网格数据文件，并利用有限差分法求解微分方程。首先，我们通过pygmsh生成一个正方体有限元网格数据文档，代码如下：

import pygmsh

with pygmsh.occ.Geometry() as geom:
    geom.characteristic_length_max = 0.1
    ellipsoid = geom.add_box([0.0, 0.0, 0.0], [1, 1, 1])
    mesh = geom.generate_mesh()
    mesh.write("D:\\desktop\\tiji\\zfx.vtk")

这段代码中，我们使用pygmsh库通过定义几何特征和最大特征长度来生成一个正方体的有限元网格数据文档，并将其写入文件"zfx.vtk"。 <span class="em">1</span><span class="em">2</span><span class="em">3</span>
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