FloMcad trainingflotherm教程Tutorial2b

FLOTHERM V5 Advanced Training Course Tutorial 2BTutorial 2B - VOXELIZATIONThis exercise guides the user through the following tasks:1. Starting FLO/MCAD and importing a .sat file2. Using the voxelization translation capability at different resolutionsTutorial 2B - VOXELIZATIONBefore you start this tutorial, you need to download the associated zip file from the FLOTHERM user support area. Download the file /support/supp/flomcad/v5_voxelization_tutorial.zip to your computer. Unzip the file. It should contain the following 3 files:- Chassis.sat, a CAD file containing the chassis solid geometry.- Voxelization-Tutorial-Start.pdml, a FLOTHERM project file containing the remaining geometry (board and components).- A pdf version of this tutorial.Note: If you experience any issue with the download, please contact your local Flomerics technical support engineer or send an e-mail to . Start Flotherm V5.In the Project Manager, select ProjectImport ProjectPDML.Find the “Voxelization-Tutorial-Start.pdml” you downloaded earlier and click Open.Next, Save the Project as “Voxelization-Tutorial-One”.Inspect the model in the Drawing Board and Flomotion. The model so far includes:- A PCB SmartPart with 10% Copper by volume.- A 3 Watt component modeled as a Cuboid for simplicity.- An Aluminum pin fin heat sink sitting on the 3 Watt component.- An assortment of connectors along the back and a disk drive in the front.- Two regions, both with localized grid settings activated.It is assumed that these parts were imported using FLO/MCAD. If you are interested in knowing more about how, please refer to the FLO/MCAD V5 tutorial. This tutorial can be downloaded at ? And covers the other available simplification and translation operations in FLO/MCAD.The chassis is not yet included in the calculation but there is an assembly called “Aluminum-Chassis” with Aluminum 6061 attached to it. You will be placing all the objects translated in FLO/MCAD into this assembly.Next launch the FLO/MCAD window by clicking .In FLO/MCAD, select ExternalImport SAT. Find the “chassis.sat” file downloaded earlier and click Open. Note the complete list of CAD file types that may be imported: IGES, STL, SAT, STEP, PRO/E, CATIA V4, SOLIDWORKS.The chassis is an empty box with curved walls on the High-X and Low-X walls. The chassis walls are 1.6 mm thick. The overall dimensions are 240 mm x 220 mm x 43 mm high.Ensure that you are in Manipulation mode (hint: your mouse icon looks like a hand) and rotate the view of the chassis around until you are comfortable with the geometry.Switch to selection mode by hitting the F9 key on your keyboard. Your mouse icon should now look like an arrow.Confirm that you are in the MCAD Part selection mode by checking the lower right corner of the FLO/MCAD window. Click on the chassis to select it. When selected, a red bounding box will appear around the geometry.Click on the Voxelize icon along the left side of the FLO/MCAD window.Its time to define the discretization mesh to be imposed on the selected geometry. By default, the Voxelize menu appears with the Define Mesh By Minimum Number setting active.Hold your left mouse key down on Minimum Number and change the selection to Maximum Cell Size. Use the following settings:- Maximum Size of Cells in X: 20 mm- Maximum Size of Cells in Y : 20 mm- Maximum Size of Cells in Z : 20 mm- Minimum Cell Size : 2 mmClick OK to begin.The MCAD monitor window gives a summary of the voxelization mesh size in the X, Y, and Z directions and mentions when the operation has been completed.The FLO/MCAD window now shows the voxelized geometry. Transfer this geometry into the Project Manager by using ToolsTransfer Assembly. Note that you could also use the icon on the left side of the FLO/MCAD window.Note: ignore the warning message coming up and mentioning that no geometry is left in FLO/MCAD.In the Project Manager, drag the Chassis assembly into the Aluminum-Chassis assembly. This ensures all the geometry in the Chassis assembly will inherit the Aluminum 6061 material attribute.Check the geometry and grid in the Drawing Board and Flomotion. Note that due to the relatively coarse voxelization mesh used, the chassis has been imported as a very simple six-sided box! You will try different settings later in the tutorial.Click GO to solve the model.When finished record the temperature of the Package monitor point here:_. In the Project Manager, save the model with the name “Voxelization-Tutorial-Two”.Highlight the “Chassis” assembly and delete it.If you close it, start the FLO/MCAD window and import the “Chassis.sat” file.Select the chassis and click the Voxelization icon. This time use the following settings:- Maximum Size of Cells in X: 2.5 mm- Maximum Size of Cells in Y : 2.5 mm- Maximum Size of Cells in Z : 2.5 mm- Minimum Cell Size : 0.25 mmClick OK to begin.Transfer the voxelized geometry to the Project Manager.Drag the “Chassis” assembly into the “Aluminum-Chassis” assembly.Check the geometry and grid.Go to SolveReinitialize and solve.Record the Package Monitor Point temperature: _In the Project Manager, save the model with the name “Voxelization-Tutorial-Three”.Highlight the “Chassis” assembly and delete it.If you closed it, start the FLO/MCAD window and import the “Chassis.sat” file.Select the chassis and click the Voxelization icon. This time use the following settings:- Maximum Size of Cells in X: 1.5 mm- Maximum Size of Cells in Y : 1.5 mm- Maximum Size of Cells in Z : 1.5 mm- Minimum Cell Size : 0.15 mmClick OK to begin.Transfer the voxelized geometry to the Project Manager.Drag the “Chassis” assembly into the Aluminum-Chassis assembly.Check the geometry and grid.Go to SolveReinitialize and solve.Record the Package Monitor Point temperature: _In the Project Manager, save the model with the name “Voxelization-Tutorial-Four”.Highlight the “Chassis” assembly and delete it.If you closed it, start the FLO/MCAD window and import the “Chassis.sat” file.Select the chassis and click the Voxelization icon. This time use the following settings:- Maximum Size of Cells in X: 1.1 mm- Maximum Size of Cells in Y : 1.1 mm- Maximum Size of Cells in Z : 1.1 mm- Minimum Cell Size : 0.11