Symmetry Plane

If your model is perfectly symmetrical, create a Symmetry Plane simulation object to simplify the problem, and save computational time by building only half of the model. Use Symmetry Plane to define the plane about which the model is symmetrical. If the model is characterized by quarter symmetry, then you can use Symmetry Plane to define two perpendicular symmetry planes.

Note:

With a Symmetry Plane, both the geometry and boundary conditions must be symmetrical.

Selecting a surface to define the symmetry plane

The software assumes that the surface on which you define the symmetry plane:

• Is adiabatic.

• Has a velocity normal to the surface of zero.

• Has a surface shear of zero.

The surface defining a symmetry plane must be related to the 3D fluid mesh. It must be a face bounding the polygon body used to define the 3D mesh. Neither 2D thermal elements nor faces of 3D thermal elements can lie on the plane of symmetry.

Note:

You must create the Symmetry Plane simulation object for each symmetry plane. For example, for a model with a quarter symmetry, you must have at least two independent Symmetry Plane simulation objects.

Mass and momentum equations

For the mass equation and all scalar equations such as energy, water vapor or passive component k and є, a zero flow condition is imposed at the symmetry plane.

For the momentum equations, the symmetry conditions are specified such that all vector values are parallel to the plane of symmetry.

Note:

Fluid velocity at the symmetry plane is always aligned with the plane.

Where do I find it?

Application	Pre/Post
Command Finder	Symmetry Plane
Simulation Navigator	Right-click the Simulation Object container node→New Simulation Object→Symmetry Plane

How do I

Define a Symmetry Plane

Learn more

Inputs to expressions

Look up more details

Auto-generated expressions

Quick links

Simcenter 3D Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal boundary conditions

Thermal/Flow, Electronic Systems Cooling, and Space Systems Thermal

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

Symmetry Plane, Simcenter 3D 2021.1 Series

© 2020 Siemens

window.mainLanguage="en_US"

window.delivId=""

window.projectId=""

MathJax.Hub.Config({ TeX: { extensions: ["autoload-all.js"] }, tex2jax: { displayMath: [ ] }, "SVG": { scale: 125 } });