Wiktionary
forced convection
n. The convection (carriage) of contents of a fluid, such as mass or (especially) heat, by means of currents induced in the fluid by a force which is not dependent on density changes in the fluid induced by heat.
Wikipedia
Forced convection
Forced convection is a mechanism, or type of transport in which fluid motion is generated by an external source (like a pump, fan, suction device, etc.). It should be considered as one of the main methods of useful heat transfer as significant amounts of heat energy can be transported very efficiently.