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9.2 Periodic Flows

Periodic flow occurs when the physical geometry of interest and the expected pattern of the flow/thermal solution have a periodically repeating nature. Two types of periodic flow can be modeled in ANSYS FLUENT. In the first type, no pressure drop occurs across the periodic planes. In the second type, a pressure drop occurs across translationally periodic boundaries, resulting in "fully-developed'' or "streamwise-periodic'' flow.

This section discusses streamwise-periodic flow. A description of no-pressure-drop periodic flow is provided in Section  7.3.16, and a description of streamwise-periodic heat transfer is provided in Section  13.4.

Information about streamwise-periodic flow is presented in the following sections:

For more information about the theoretical background of periodic flows, see this section in the separate Theory Guide.

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