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Create a User Defined Function (UDF)

This section explains how to create a UDF (C script) to be used in ANSYS Fluent jobs.

Step 1: Navigate to the UDF Page

From the Jobs tab, click on UDF in the top menu.

UDF Page

Step 2: Click on Create

Click the Create button to start the UDF creation flow.

Create Button

Step 3: Fill UDF Information

Provide: - UDF Name - Application (e.g., ANSYS Fluent) - Version (e.g., 2025 R1)

UDF Form

Step 4: Upload the Script File

Click Open Local File or drag and drop your .c or .h file for upload.

Upload File

Step 5: Configure Journal File (Optional)

If your job requires a Fluent journal file, you can add it from the Working Directory section:

  1. Set the Working Directory path.
  2. Under Journal File, click Browse Local File or Browse Shared Folder to select your journal file.
  3. The Journal Content editor will display the loaded journal script, which you can review or edit directly before submission.

Journal File Selection

Step 6: UDF Creation Complete

click on create UDF,the UDF will appear in the list after successful creation.

UDF Created

    📌 General Notes
  • If you encounter any UI issues or have questions about job submissions or status, please contact the Admin for support.