تعريف free convection في الإنجليزية الإنجليزية القاموس.
The convection (carriage) of contents of a fluid, such as mass or (especially) heat, by means of currents induced in the fluid by a buoyancy force which is dependent on an acceleration (such as gravity) acting upon density changes in the fluid which are induced by heat
The transfer of heat from a hot object by means of upward hot air currents from the object, is due to free convection.