FEMesh Properties

An FEMesh object contains a description of the finite element mesh. A PDEModel container has an FEMesh object in its Mesh property.

Generate a mesh for your model using the generateMesh function.

Properties

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Mesh nodes, returned as a matrix. Nodes is a D-by-Nn matrix, where D is the number of geometry dimensions (2 or 3), and Nn is the number of nodes in the mesh. Each column of Nodes contains the x, y, and in 3-D, z coordinates for that mesh node.

2-D meshes have nodes at the mesh triangle corners for linear elements, and at the corners and edge midpoints for 'quadratic' elements. 3-D meshes have nodes at tetrahedral vertices, and the 'quadratic' elements have additional nodes at the center points of each edge. See Mesh Data.

Data Types: double

Mesh elements, returned as an M-by-Ne matrix, where Ne is the number of elements in the mesh, and M is:

  • 3 for 2-D triangles with 'linear' GeometricOrder

  • 6 for 2-D triangles with 'quadratic' GeometricOrder

  • 4 for 3-D tetrahedra with 'linear' GeometricOrder

  • 10 for 3-D tetrahedra with 'quadratic' GeometricOrder

Each column in Elements contains the indices of the nodes for that mesh element.

Data Types: double

Target maximum mesh element size, returned as a positive real number. The maximum mesh element size is the length of the longest edge in the mesh. The generateMesh Hmax name-value pair sets the target maximum size at the time it creates the mesh. generateMesh can occasionally create a mesh with some elements that exceed MaxElementSize by a few percent.

Data Types: double

Target minimum mesh element size, returned as a positive real number. The minimum mesh element size is the length of the shortest edge in the mesh. The Hmin name-value pair passed to the generateMesh function sets the target minimum size the at the time it creates the mesh. generateMesh can occasionally create a mesh with some elements that are smaller than MinElementSize.

Data Types: double

Mesh growth rate, returned as a scalar strictly between 1 and 2.

Data Types: double

Element polynomial order, returned as 'linear' or 'quadratic'. See Elements or Mesh Data.

Data Types: double

Introduced in R2015a