Convection meaning: Learn about the three

Learn about the three types of heat transfer: conduction, convection, and radiation. Get helpful examples. Simulation of thermal convection in the Earth's mantle. Hot areas are shown in red, cold areas are shown in blue. A hot, less-dense material at the bottom moves upwards, and likewise, cold material from the top moves downwards. Convection (or convective heat transfer) is the transfer of heat from one place to another due to the movement of fluid. Although often discussed as a distinct method of heat transfer, convective heat transfer involves the combined processes of conduction (heat ... Convection is the flow of a fluid or a mixture due to density differences and body forces. Learn about natural convection, forced convection, granular convection and convective heat transfer, with illustrations and applications. Warm air rises by the process of convection. This gradient, established and maintained by the surface buoyancy flux through the process of turbulent convection, is what draws fluid in from the external reservoir.