Radiation dialog box (Thermal/SST/ESC/Multiphysics)

Option	Description
Type	Controls how the physical enclosures within which radiation is calculated are defined.With the All Radiation type, the software automatically detects appropriate physical enclosures.With the Enclosure Radiation type, you specify the physical enclosures.
Name	Lets you specify a name for the simulation object.
Destination Folder
Simulation Object Container	Specifies the folder in the Simulation Navigator in which the boundary condition will be stored. The list includes the root container and existing folders that you created using the New Folder command. Examples of a root container include Load Container, Constraint Container, and Simulation Object Container.
Folder Manager	Displays a hierarchical listing of existing folders. To create a new folder, right-click any level of the hierarchy and choose New Folder.
Region/Region Radiating from Top Side/Region Radiating from Bottom Side
Group Reference	Appears when you set Type to Enclosure Radiation.Lets you apply the region to a group.For more information, see Group Reference options.
Select Object	Lets you select the elements or geometry that define the enclosure.Element Selection Filtering lets you limit your element selection to the FE entity you select from the Filter Type list:0D Elements, 1D Elements, or 2D Elements lets you select only elements of that order.Element Edges lets you select 1D elements, the edges of 2D, or 3D elements.Element Faces lets you select 2D elements or the faces of 3D elements.Caution: You must select Element from the main selection Type Filter list to use the Element Selection Filtering options.Excluded lets you remove individual entities from within your selected object.
Stacked Smart Selector Methods	Opens the Smart Selector Methods dialog box where you can specify a progression of smart selection filters.For more information, see Smart Selector Methods dialog box.
Parameters
Include Radiative Environment	Select this option to model radiative exchange between any part of the enclosure and the environment. You must also define a Radiative Environment Temperature on the Ambient Conditions page in the Solution dialog box.
Calculation Method	Lets you control how the software calculates black body view factors.Hemicube Rendering uses your computer's graphics card to calculate shadowed view factors quickly and accurately. You can only use this option if your computer's graphics card supports the Open Graphics Library (OpenGL) standard, OpenGL version 2.1 or higher. The graphic display color depth must be set to 24 bit (“True Color”) or higher. See Understanding the Hemicube Rendering calculation method for more information.Deterministic uses the deterministic view factor method. Deterministic may be slower than the Hemicube Rendering method, but it does not rely on your computer's graphic card.Monte Carlo does a better job of accurate shadow modeling than the other methods. It also supports complex models of diffuse reflection and transmission, through definition of bidirectional reflectance distribution functions (BRDFs) and scattering coefficients as material properties. For more information, see Understanding the Monte Carlo calculation method.
Element Subdivision	Available when Calculation Method is set to Hemicube Rendering or Deterministic.Balances view factor accuracy against calculation speed.Fixed granularitySets the granularity of the element subdivision for computing shadowed view factors. Select one of five levels of granularity numbered 0 to 5. A higher subdivision level yields more accurate radiative conductances, but the computation requires additional time. Use GlobalUses the global element subdivision that you specify for the Element Subdivision option on the Radiation Parameters page in the Solver Parameters dialog box.Based on Error CriterionDynamically estimates a subdivision level for each view factor, using the lowest subdivision level that satisfies the criterion. You specify a view factor error tolerance for computing shadowing checks in the Criterion Value box.
Monte Carlo Settings	Choose a previously defined Monte Carlo Settings modeling object from the list or click Create Modeling Object to create a new one. For more information, see Monte Carlo Settings.
Elements not Part of this Enclosure Can Shadow	For an Enclosure Radiation type:Select Elements not Part of this Enclosure Can Shadow to include all elements in the model for shadowing checks.Clear the check box to limit shadowing checks to those elements in the enclosure.This option is not available for the All Radiation type, since all elements are always checked for shadowing
Include Faces of Solid Elements	Available when Type is set to All Radiation.Models radiation from the faces of solid elements.
Card Name	Displays the name of the associated solver card.

How do I

Define Radiation

Learn more

Radiation

Radiation types

Understanding enclosures

Understanding view factors

Understanding the Hemicube Rendering calculation method

Thermo-optical properties

Checking and orienting the normals of 2D elements

Quick links

Command reference

Pre/Post video examples

Bulk Entry Descriptions

Simcenter 3D tutorials

Browse Simcenter 3D help by product area

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

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

Radiation dialog box (Thermal/SST/ESC/Multiphysics), 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 } });