Although often discussed as a distinct method of heattransfer, convective heat transfer involves the combined processes of conduction (heat diffusion) and advection (heat transfer by bulk fluid flow). Theconvective heat transfer coefficient (h), defines, in part, the heat transfer due to convection.
condution
convection 對流
advection 平流
conversion 轉變
Convective heat transfer, often referred to simply as convection, is the transfer of heat from one place to another by the movement of fluids. Convection is usually the dominant form of heat transfer in liquids and gases. Although often discussed as a distinct method of heat transfer, convective heat transfer involves the combined processes of unknown conduction (heat diffusion) and advection (heat transfer by bulk fluid flow).
This colour schlieren image reveals thermal convection from a human hand (in silhouette form) to the surrounding still exchange.
