### 7.2.1. Global Controls

- Component selection control

  This drop-down list enables you to select between the impeller and volute components. You should specify details for both the impeller and volute components before performing a calculation. This list is set to `Impeller` by default.

- Calculate

  Click Calculate to perform the calculation. If you modify the input controls after you click Calculate, the results will be out-of-date. To update the results, click Calculate again.

- Close

  Click Close to close Vista CPD.

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