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    Lesson 6

    Uploaded by

    The Rural man
    This lesson focuses on the Update Regions task in Ansys Fluent Meshing. This task allows the user to define and update the properties of regions in the computational model, such as region name and type, after importing a CAD model and creating the surface mesh. The example model contains two regions - a heat sink solid domain and an enclosure fluid domain. The Update Regions task identifies and allows editing of these regions to ensure accurate physics simulation and downstream tasks like adding boundary layers.

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    Lesson 6

    Uploaded by

    The Rural man
    13 views2 pages
    This lesson focuses on the Update Regions task in Ansys Fluent Meshing. This task allows the user to define and update the properties of regions in the computational model, such as region name and type, after importing a CAD model and creating the surface mesh. The example model contains two regions - a heat sink solid domain and an enclosure fluid domain. The Update Regions task identifies and allows editing of these regions to ensure accurate physics simulation and downstream tasks like adding boundary layers.

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    Lesson_6

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    This lesson focuses on the Update Regions task in Ansys Fluent Meshing. This task allows the user to define and update the properties of regions in the computational model, such as region name and type, after importing a CAD model and creating the surface mesh. The example model contains two regions - a heat sink solid domain and an enclosure fluid domain. The Update Regions task identifies and allows editing of these regions to ensure accurate physics simulation and downstream tasks like adding boundary layers.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    13 views2 pages

    Lesson 6

    Uploaded by

    The Rural man
    This lesson focuses on the Update Regions task in Ansys Fluent Meshing. This task allows the user to define and update the properties of regions in the computational model, such as region name and type, after importing a CAD model and creating the surface mesh. The example model contains two regions - a heat sink solid domain and an enclosure fluid domain. The Update Regions task identifies and allows editing of these regions to ensure accurate physics simulation and downstream tasks like adding boundary layers.

    Copyright:

    © All Rights Reserved
    Download as PDF, TXT or read online from Scribd
    Download as pdf or txt
    of 2

    Describe_Geometry_Lesson_6

    The focus of this lesson [1] [2] is on the Update Regions task. The role of this task is to update the
    properties of any defined regions in the computational model.

    After the CAD model has been imported and the surface mesh has been created, the describe
    geometry task and its subtasks are used to define the computational model.

    After the completion of this task, Ansys Fluent Meshing is fully aware of the fluid, solid and dead
    regions in the model.

    These identified regions and their properties are tabulated in the Update Regions task.

    Let me pass you over to my colleague who help you understand the functioning of this task through
    an example.

    Launch Ansys Fluent in meshing mode.


    Go to File, Read, and select Mesh, and then pick the provided mesh file. Once Fluent finishes reading
    the file, you will notice that the watertight geometry workflow has been automatically setup and all
    the tasks till Describe Geometry and its subtasks have already been successfully completed. This
    is because the surface mesh that we just imported into Fluent has originally been created using the
    watertight workflow and saved after completing the Describe Geometry and its subtasks. Such files
    when read back into Fluent retain the information regarding their workflow.

    The model we have here is that of a heat-sink, which is the solid domain, placed inside an enclosure
    which is the fluid domain.

    So, there are a total of 2 domains or regions in the model, and these are listed in the Update Regions
    task. The first column lists the names of each of the regions and the second column lists the region
    type.

    Either hovering or left clicking once on the name of any of the regions highlights them in the graphics
    display window. To change the names of any of the regions, simply double left-click on the
    appropriate region name, enter the new name and press the ‘Enter’ button on the keyboard.

    (2:37) The Draw Regions button can be used to filter the regions that are displayed in the graphics
    window. One can choose between displaying all the regions or just the solid or the fluid regions. A
    custom set of regions can be visualized by selecting them in the table, right-clicking, and selecting
    Draw Selections in the context menu. This context menu also has the options to change the region
    name or type. If any of the regions have been wrongly identified i.e., a wrong region type has been

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    Describe_Geometry_Lesson_6

    assigned than what is required, it can be fixed from the region type dropdown menu for that specific
    region.

    The choice of region type is between solid, fluid, and dead.

    Note: The dead regions are the same as a void or a pocket in the domain and are not transferred to
    the Fluent solver.

    It is critical that the regions are rightly defined not only to simulate the correct physics, but also to
    ensure the successful implementation of downstream workflow tasks such as add boundary layers
    which relies on the region type to speed-up the setup and generation of the prism layers.

    The print summary button can be used to print the information regarding the regions to the console
    window.

    Once you are satisfied with the region assignment, click Update Regions to confirm and move to the
    next task in the workflow.

    In case any changes need to be made to any of the settings click Revert and Edit, make your
    changes, and click Update to confirm the changes or click Cancel to cancel your changes.

    To summarize, in this lesson, we learnt about:


    How to modify the name and type of the regions defined in the computational model using the
    Update Regions task of the Ansys Fluent Meshing Watertight Geometry Workflow.

    References

    [1] "Ansys Innovation Space," [Online]. Available: shorturl.at/i1359.

    [2] "Ansys Learning (YouTube)," [Online]. Available: shorturl.at/cDI12.

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