## 6.1. Vista CCD Workflows

There are two main ways to use Vista CCD:

- Vista CCD can be used in an iterative fashion to create a 1D design as follows:

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

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

  2. Either edit the Blade Design cell (of the new Vista CCD system) or show that cell's properties.

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

     Editing the cell causes the Vista Centrifugal Compressor 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 required input settings:

     - The compressor duty (pressure ratio, mass flow, rotational speed)

     - The gas properties

     - Fixed geometric constraints (for example, inducer hub diameter, vane thickness)

     - Some geometric and aerodynamic variables which are open to choice and may be changed during the iterative 1D design procedure (for example, vane number, relative velocity ratio, incidence, etc)

     See Data Review and Edit for details on the input settings.

  4. Compute a compressor design by clicking Calculate.

     The 1D geometric and aerodynamic dependent parameters are computed and displayed numerically; a meridional view of the impeller is also displayed. If efficiency correlations have been selected, a chart of the correlation with the current design point superimposed is also shown.

  5. Assess the results.

     See Viewing the Results for descriptions of the results.

  6. Continue to revise the input data and refresh (regenerate) the results until you obtain a satisfactory 1D design.

- Vista CCD can be used to model an existing compressor and, if known, its measured performance at single operating points. This use of Vista CCD is described in Using Vista CCD to Model an Existing Compressor.

Release 18.2 - © ANSYS, Inc. All rights reserved.