### 5.1.1. Meanline Calculation

To set up and run a meanline case in Vista AFD:

1. With ANSYS Workbench running, create a new Vista AFD system (available in the Component Systems toolbox).

   (Double-click the Vista AFD system or drag it onto the Project Schematic view.)

2. Either edit the Meanline cell (of the new Vista AFD system) or show that cell's properties.

   (Right-click the Meanline cell and select either Edit or Properties from the shortcut menu.)

   Editing the cell causes the Vista Axial Fan Design dialog box to appear.

   The cell properties can be used as an alternative to the dialog box. One advantage of using cell properties is that you can make use of Workbench input parameters to specify the values of input settings.

3. Specify the basic aerodynamic and geometric requirements, namely:

   - the fan duty (for example, head rise, mass flow, rotational speed)

   - the machine configuration (with/without IGV or OGV)

   - fixed geometric constraints (for example, annulus diameters, aspect ratio)

   Refer to Data Review and Edit for details about each input setting.

   With the appropriate inputs made, the meanline calculation can be run.

4. Run a meanline calculation by one of these methods:

   - Updating the Meanline cell after configuring its properties.

   - Editing the Meanline cell, configuring the settings in the Aerodynamics and Geometry tabs, then clicking the Calculate button, which is shown in Figure 5.3: Meanline Results Summary.

     Figure 5.3: Meanline Results Summary

     The Results tab is then automatically made visible. The 1D aerodynamic dependent parameters are computed and displayed numerically; values that are outside of the recommended ranges are highlighted.

     A sketch of the meridional view of the designed fan is displayed. This outlines the annulus in black, the IGV in red (if enabled), the rotor in blue and the OGV in green (if enabled).

     Refer to Results Tab for details.

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