Mixing Plane

Use a Mixing Plane simulation object to interface two or more fluid regions with different flow conditions. The mixing plane helps you to simulate flow problems where averaging the flow over parts of the rotor interface is useful, such as when a rotor interacts with a stator. For example, you can use a Mixing Plane simulation object when you want to interface a rotating flow region with a non-rotating flow region.

A mixing plane does the following:

• It averages the velocity on the upstream plane of the mixing plane and applies it to the downstream plane.

• It averages the pressure on the downstream plane of the mixing plane and applies it to the upstream plane.

You can specify the following types of Mixing Plane:

• Mixing Plane with Joint Mesh Interface — When you use this type, you need to specify only one region.

• Mixing Plane with Disjoint Mesh Interface — When you use this type, the upstream and downstream regions do not need to touch.

You must specify the following:

• The velocity direction. You need to do this only for the Mixing Plane with Joint Mesh Interface type.

• The averaging method. You can specify this either along the radius by specifying the radial direction, or along a vector by specifying a direction on the mixing plane.

• The number of segments over which the software averages the flow quantities.

When you create a solution that contains a Mixing Plane simulation object, you must only have:

• Inlet or Opening types of Flow Boundary Condition upstream of the mixing plane, and

• Opening types of Flow Boundary Condition downstream of the mixing plane.

When you use the Mixing Plane with Joint Mesh Interface type and the mixing plane region is composed of more than one polygon faces, make sure to:

• Use 2D shell elements to mesh the mixing plane region.

• Have all element normals pointing in the same direction.

• Select the shell elements instead of the geometry.

Where do I find it?

In a Simulation file, with an active solution that has the appropriate solver, analysis type, and solution type selected:

• Choose Home tab→Loads and Conditions group→Mixing Plane .

• In the Simulation Navigator, right-click Simulation Objects and choose New Simulation Object→Mixing Plane.

How do I

Set up a mixing plane boundary condition

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

Mixing 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 } });