To Assign an LED Device
The LED model must contact either a PCB material or a solid material with “PCB” in its name. ("PCB" must be in English.) From this, the orientation of the device is determined automatically.
The side of the component touching the PCB material is the board side, and the board node is at the center of the board surface of the component. The opposite side is the case side.
Additional Guidelines:
LED materials must contact a part that is assigned a fluid material. Autodesk Simulation CFD does not support LED devices completely embedded in a solid object.
An LED must only contact one PCB material (or a solid with "PCB" in its name). One common situation is to sandwich the LED between two PCB materials. Another is for the LED to straddle two adjacent PCB materials. Neither of these configurations is supported. The LED must contact one and only one PCB.
One way to fix this is to modify the model configuration in the originating CAD tool. Move the LED so that it touches only a single PCB part. Another approach is to modify the material definition of one of the PCB parts within Autodesk Simulation CFD. Either change the definition of one of the parts to a solid or assign a different solid material that does not include "PCB" in its name.
An LED cannot contact a PCB material that is suppressed. A suppressed part cannot contact the board or case surfaces of the LED.
Check the Material branch (of the Design Study bar) to ensure that the PCB part is not suppressed. Suppressed parts are displayed with a line through their name. To unsuppress the part, right click on it, and click Resume. Note that the mesh will have to be defined again.
To Create an LED Device
Only two parameters are required to define an LED Device on the Material Editor:
Notes:
Data Extraction and Visualization
For visualization purposes, the device is divided into two regions--the junction and the case. Each region of the component has its own temperature which is governed by the resistance values and the surrounding conditions. A single rectangular element comprises each layer, and is shown:
For every two resistor component, the following data is available:
Results are viewed using these methods:
For more about using LED Devices in Lighting applications...