### 3.2.2. Frame Type

If a domain is rotating, you can choose to apply the initialization values relative to each domain (Frame Type = `Rotating`) or to the absolute frame of reference (Frame Type = `Stationary`). If the Frame Type setting is not given, the initialization values apply relative to each domain. For stationary domains, the Frame Type setting has no effect, and initialization values apply to the absolute frame of reference.

#### 3.2.2.1. Considerations for Multiple Domains and Global Initialization

When using the Global Initialization dialog box to set properties for Frame Type, the settings acquired by each domain in a multiple domain simulation are as follows:

- If one domain is rotating and the other is stationary, selecting a global rotating frame type will specify relative frame types for both domains. The rotating frame will therefore be initialized with its relative (rotating) frame and the stationary domain will be initialized with its relative (stationary) frame.

- If one domain is rotating and the other is stationary, selecting a global stationary frame type will specify initialization for both domains with an absolute (stationary) frame.

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