## 6.4. Common Options

The following options and frames are always visible in the Vista Centrifugal Compressor Design dialog box:

Units: These option buttons control whether the data (both input and results) are presented in either SI or imperial units. The data switches as soon as the units are changed; no recalculation is required after switching and any subsequent recalculation will yield identical results.

Impeller sketch: This displays a simple meridional sketch of the impeller, hub, and shroud curves.

The Calculate button updates the data model with the input data in the user interface and subsequently performs the calculation.

The Close button updates the data model with the input data in the user interface before closing it.

Note: When the user interface loses focus, Workbench is automatically updated with the input data. Conversely, on receiving the focus the user interface input data will be updated from Workbench.

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