Thermal Rotational Periodicity

Use the Thermal Rotational Periodicity simulation object to define rotational periodicity in a thermal model for conductive and radiative heat transfer. This simulation object allows you to represent a full 3D model from a single section by using rotational periodicity.

The following types are available.

Conductive

Defines a conductive thermal rotational periodicity. You define a master region and a slave region. You can also specify the coupling resolution, the overlapping region, and the overlap projection direction.

Radiative

Defines a radiative thermal rotational periodicity on the complete model. You specify the periodicity by defining the number of sectors or the sector angle. The thermal solver computes view factors for all 2D surface elements.

You must define the revolve axis for all types.

Complete model	Periodic sector

Example:

To model conductive and radiative thermal heat transfer on the complete model shown using just the periodic sector, you define the following Thermal Rotational Periodicity simulation objects:

• One Conductive type of simulation object on the lavender surfaces.

• One Radiative type of simulation object on the periodic sector body. The thermal solver computes the view factors for the elements that are on the red surfaces taking into account the cyclic symmetry of the model.

After solving the thermal or coupled solution, the thermal solver creates the ExpandedElement.bun file that contains original elements and expanded elements that are created by rotating the original elements. You can import this BUN file to visualize the original and duplicate elements in the Post Processing Navigator. For each element, the software displays the instance number of the sector. This file helps you to evaluate if you set up your model correctly, particularly, when the software computes view factors where there are collisions between original and expanded elements. The file is stored in the run directory.

Where do I find it?

Application	Pre/Post
Command Finder	Thermal Rotational Periodicity
Simulation Navigator	Right-click the Simulation Object Container node→New Simulation Object→Thermal Rotational Periodicity

How do I

Create a thermal rotational periodicity

Learn more

Advanced Controls

Deactivation Set

Disjoint Fluid Mesh Pairing

Duct Flow Boundary Conditions

Immersed Ducts

Flow Blockage

Flow Boundary Condition

Flow Convergence

Flow Surface

Fluid Domain

Free Molecular Heating

Interface Resistance

Joule Heating

Merge Set

Mixing Plane

Moving Frame of Reference

Orbital Heating

Override Set

Particle Injection

Peltier Cooler

Periodic Boundary Condition

Printed Circuit Board

PCB Component

Radiation

Radiative Element Subdivision

Radiative Heating

Report

Screen

Selective Results

Solar Heating andSolar Heating Space

Solid Motion Effects

Supersonic Inlet

Surface-to-Surface Contact

Symmetry Plane

Thermal Coupling

Thermal Coupling — Advanced

Thermal Coupling — Convection

Thermal Coupling — Radiation

Thermal Streams Junction

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

Related Topics

Protective Layers

Thermal Rotational Periodicity, 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 } });