With Flow Simulation 2016 users no longer have to model two separate solid bodies for use with the Two-Resistor Component feature available in the Electronics Cooling module. To add a Two-Resistor Component model to your Flow Project, simply open the property manager and select the top surface of the one component that represents your chip. This selected top face will represent the case node and the software will automatically populate the “Components to apply the Two-Resistor” field with the corresponding part file. The bottom face of the component is still considered the board node and defined automatically. The top and bottom faces representing the case face and the face touching the board still need to be parallel to one another.
For older projects that have existing Two-Resistor Components already assigned, those instances will be automatically converted to the new style feature. You will not have to re-apply these instances. Simply edit your Two-Resistor Component feature created in a previous version in 2016 and you will be given a message to perform the conversion.
Flow Simulation will simply add both the case and junction bodies to the “Components to apply the Two-Resistor” field and choose the case surface.
Another benefit to the change is that you no longer need to enter the dimensions of the chip when creating your custom Two-Resistor Components in the Engineering Database. The program can automatically determine the width, length, and thickness of the structure.
Please note that multiple bodies can still be selected to represent the chip however their faces must be touching just as in previous versions. This will allow you to continue using older geometry but will allow you to re-assign with a “new style” Two-Resistor Component feature if necessary.