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Ansys Meshing – Element Order (Linear & Quadratic)

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Source: Ansys

The global Element Order option allows you to control whether meshes are to be created with midside nodes (quadratic elements) or without midside nodes (linear elements). Reducing the number of midside nodes reduces the number of degrees of freedom. Choices for the global Element Order option include Program ControlledLinear, and Quadratic.

Examples are presented below. The heavy vertical line in each graphic represents the body boundary.

#### Program Controlled

Program Controlled is the default. For surface bodies and beam models, Program Controlled is identical to the Linear option described below. For solid bodies and 2-D models, Program Controlled is identical to the Quadratic option described below.

#### Linear

The Linear option removes midside nodes on all elements. Examples shown below are for a solid body.

The Quadratic option retains midside nodes on elements created in the part or body. All elements will have midside nodes.

If Element Order is set to Quadratic, and if Straight Sided Elements is set to No, the midside nodes will be placed on the geometry so that the mesh elements properly capture the shape of the geometry. However, if the location of a midside node might affect the mesh quality, the midside node may be relaxed to improve the element shape. Therefore, some midside nodes might not follow the shape of the geometry precisely.

In this tutorial, you will learn the differences between Linear and Quadratic element order in Ansys Meshing.

## Ansys Fluent Tutorial | Heatsink

In this tutorial, you will learn how to simulate a Heatsink using Ansys Fluent. In this first video, you will see how to create the geometry and the mesh using DesignModeler, Ansys Meshing and Ansys Fluent.

## Ansys Meshing | Inflation

You can set the Use Automatic Inflation control so that inflation boundaries are selected automatically depending on whether or not they are members of Named Selections groups.

## Ansys Fluent Tutorial | Heatsink

In this tutorial, you will learn how to simulate a Heatsink using Ansys Fluent. In this first video, you will see how to create the geometry and the mesh using DesignModeler, Ansys Meshing and Ansys Fluent.

## Ansys Meshing | Inflation

You can set the Use Automatic Inflation control so that inflation boundaries are selected automatically depending on whether or not they are members of Named Selections groups.

## Ansys Meshing – Keyframe Animation

You can make animations based on keyframes. Keyframes define the start and endpoints of each section of animation.

## Ansys Meshing – Match Control

In this tutorial, you will learn how to use the Match Control tool in Ansys Meshing. Match Control allows duplicating the mesh in a body. We have two option Match Control Cyclic and Arbitrary.

## Ansys Meshing – Body of Influence

The Body of Influence option is available in the Type field if you selected a body and Use Adaptive Sizing is set to No. Using this option, you can set one body as a source of another body

## Ansys Meshing – Sphere of Influence

The Sphere of Influence option is available in the Type field after you select an entity such as a body, face, edge, or vertex.

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