Altair ElectroFlo 2018 official version

Altair ElectroFlo function introduction

1. Tools: Provides a series of important tools to help design engineers in the rapid prototyping process. These tools are designed to reduce modeling time, error checking and standardization. These tools don’t just help novice users; But it can save advanced users time and in some cases days of modeling time.

​ ​ 2. Model Manager (Listview): Allows users to browse the entire model. Geometry and boundary conditions can be modified on multiple objects simultaneously, and there are many useful tools for miscellaneous tasks. This tool is particularly useful for understanding complex models; but it has many features that greatly enhance the modeling process.

Treeview: Treeview, located in Model The left side of the Manager, with checkboxes to populate the Listview. It filters the objects that the user wants displayed on the right side of the window. Checking a parent box in the hierarchy will check/uncheck all child nodes of that checkbox. Any combination of objects can be displayed at once

Sorting: Information in list view is displayed in columns. Most properties on a Listview can be modified directly by double-clicking on their properties (instead of double-clicking). Objects can be sorted by any property, such as type, material, power or temperature.

Hide/Show: The first column contains the hide/show checkboxes. These toggle buttons will show or hide objects. (show = checked)

File: The Point to File feature exports the items displayed in the main Model Manager view to a tab-delimited text file that can be read into Excel. This is useful for exporting solid temperature/power results or obtaining other data for reports.

Model Tools: Provides various tools to model multiple objects/ BC makes changes; these include changing the reference coordinate system, renaming, moving/adjusting changes to materials/assemblies/colors, including/unincluded in analysis and changing installation priorities.

         Set Critical Temperature for Solids: This will bring up a pop-up window that allows the user to set critical and/or warning temperatures for these selected solids.

Having critical and warning temperatures for solids allows the user to easily process which solids have failed or are close to failure.

Solids can be colored by passing/warning/failure in the results view.

​ ​ Display: These are functions that change the visibility of entities.

Priority: Priority determines which material properties will be used when there are overlapping entities. The highest priority (lower number) has the highest priority and will override entities with higher priority numbers. The override flag means that this entity will take precedence over any entity without an override set.

​​Color: The "Color By" option allows changing the coloring scheme of the entity. Each material, component, part, and entity has an associated color, and users can quickly change the color, assembly, part, or entity.

​​ 3. Member display: View the graphical representation of the physical material composition. This allows the user to change how the model is color coded. It also allows the user to view the order of materials in the selected plane. It's always a good idea to use this tool to ensure that the correct element properties are passed to the solver and that important entities are not inadvertently overwritten by another object.

​ ​ 4. Electrical connections: This tool is only relevant when performing electronic co-simulation (check the electrical analysis in the model parameters). Utilize a fully automated procedure to inspect electrical areas using component resistivity and electrical connections. The user can select from a list of areas and place all members of the selected circuit into a group. This is a convenient way to view/modify the entire area.

5. Boundary conditions: Apply boundary conditions using complete associations between objects, loads and functions. The user selects the application area, enters a constant value or points to a function/form to get a different value. Modifying/copying the object will automatically modify/create the BC accordingly.

​ ​ 6. Mesh: Meshing in Altair ElectroFlo is fully automated and user control can be improved.

Create mesh: This option will automatically generate a mesh using the specified global mesh parameters, or use the default values ​​if not specified. The automatic routine starts with a coarse mesh, consisting only of key planes (formed by geometry and BC), and packs elements within "key plane pairs" according to global parameters.

Local mesh editing: To optimize the mesh between specific bond planes, the user selects the "Local parameters" checkbox. From here, the user selects pairs of key planes between which the mesh is to be modified. This is accomplished by selecting the left (lower coordinate) key plane with the mouse.

This will highlight the selected bond plane as well as the adjacent (right) bond plane. The user then specifies the mesh density between these planes via one of three methods.

Method 1, the user specifies the grid thickness on the left (lower coordinate value), the grid thickness on the right (higher coordinate value) and the corresponding grid levels on both sides. This results in a bidirectional bias; However, the deviation can be from the left toward the center rather than from the right toward the center.

Method 2, the user provides the number of elements between bond planes and the size ratio between the first and last elements. This is equivalent to specifying a one-way deviation from one bond plane to the next.

Method 3, this method is very similar to method 2 above. The user again specifies the number of elements between the key planes, and then specifies the size ratio between the first and center elements (in method 2, the user specifies the size ratio between the first and last elements).

Model Cleanup Utility: Due to the complexity and random placement of components, electronic thermal models often involve severe alignment issues, resulting in elements with extremely high aspect ratios, which can lead to inaccurate solutions and disagreements in CFD calculations.

​ ​ Therefore, one of the key modeling steps involves "cleaning" the geometry by moving objects slightly and/or merging "faces" within specified tolerances. Altair ElectroFlo offers mesh cleaning tools with one-click full automation; or user control of selected objects.

​​ 7. Automation: User provides tolerance (minimum distance between faces). The tool detects all cases with associated entities to merge individually or globally with one click

​ ​ 8. Object@Keyplane: This tool is used to identify entity objects that coincide with any key plane. The user is presented with a summary report of all objects on a key plane pair, and can optionally merge the two key planes and modify the objects.

Material: Provide a material definition to all geometric entities by selecting the material from the box or entering the name of a new material whose properties will be set later. Material properties are stored under the material name. Material properties can be user-defined or downloaded from Altair Select materials from the material library provided by ElectroFlo.

​ ​ 1)Library Materials - To reference materials from the library, the user must select from the materials in the list box.

​ ​ 2) User-defined—Create a user-defined material by typing the material name (not included in the library) into the material data box. This name will be added to the list of material names for subsequent use.

​ ​ 3) Geometry - Users can create/modify/copy geometry; it can also be imported into the model in various formats. Altair ElectroFlo allows the import of geometric objects from CAD (STEP) and ECAD (IGES, IDF and ODB++). Currently, enhancements are being made to use ODB ++'s ECAD import to allow "smart import" of thermal-related details, filtering out the vast majority of PCB objects that have no significant impact on the thermal solution. During this enhancement, ECAD import functionality is disabled.

10. Conjugate heat transfer/CFD core solver: Altair The ElectroFlo solver utilizes a stable and powerful computational fluid dynamics (CFD) core. The core solver is based on a finite volume formulation and uses the Structured Cartesian method for meshing, shown to be the most stable and numerically highest meshing option in CFD calculations.

​ ​ 11. Coupled Electrical Solver: Thermal analysis of high-current devices requires accurate calculation of the heat generated due to the flow of current in traces and connectors. In this approach, the voltage field is coupled in parallel but with the temperature, pressure and flow fields, exploiting this automated process with updated electrical properties. The obtained current density is used to calculate the Joulian calorific value.

Accurately calculate the heat dissipation of traces and wires caused by current flow (Joule heating or self-heating effect)

Avoid the difficult task of estimating trace heating for complex circuits, which invariably leads to "over-design".

​ ​ 12. Embedded 1D flow network solver: This feature allows the direct integration and coupling of flow network modeling methods in the entire system model. Suitable for modeling of liquid cooling channels, microchannels and microchannels, phase change rings, complex heat exchangers and cold plates. Design cooling loops by extending outside the domain of the electronics box; calculate pressure losses throughout the system and obtain pumping requirements.

13. Radiation solver: In many electronic applications, thermal radiation may be an important heat transfer mode that cannot be ignored. Altair ElectroFlo's fully automated radiation solver allows users to include thermal radiation in calculations with virtually no additional modeling/simulation cost to automatically perform visual factor calculations and generate radiosity networks. Radiating surfaces are automatically generated based on user-specified tolerances. This method automatically combines element surfaces to have a more reasonable radial mesh, rather than being dictated by the extreme details of the problem.

14. Embedded thermal/electrical RC network: This option allows for combining 3D conjugate CFD/thermal analysis with universal R/ C network solvers combine to provide a complete thermal modeling platform. Some benefits include: Modeling component details with minimal computational cost. Extend the thermal solution beyond the confines of the electronics box to account for more realistic boundary conditions. Circuits can be modeled more easily and accurately by extending the circuit beyond the thermal model domain using electrical nodes and resistors connected to components in the model.

​ ​ 15. 2D Plate: Allows users to simulate thin conductive solids sandwiched between 3D elements. This method is ideal for modeling heat sinks, circuit board layers, component details with minimal impact on performance.

Altair ElectroFlo installation steps

​​ 1. Download the Altair ElectroFlo official version installation package from Huajun Software Park. After unzipping, double-click the "exe" file to enter the installation wizard and click Next

​ ​ 2. Click "Browse" to select the installation location. Generally, the default is C drive. It is recommended to install on D drive. Click Next.

3. The software information is ready, click Next to install

​ 4.Altair ElectroFlo is being installed, please wait patiently

5. When the installation is complete, click Close to exit the installation wizard.

Altair ElectroFlo update log

​ ​ 1. Optimize content

​​ 2. The details are more outstanding and bugs are gone.

Special instructions:

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