Circulation

From open-encyclopedia.com - the free encyclopedia.

The word circulation can mean the following:

The transport of blood through the circulatory system. See circulation (physiology).
Movement of gas or fluid through a physical circuit (such as air through ventilated building) or an imaginary one (such as money through the economy).
The readership of a periodical.
In fluid dynamics, circulation is the line integral of fluid velocity around a closed curve

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