What Is Convection In Physics?
Convection is the movement of molecules within fluids (i.e. liquids, gases and rheids). Convection is one of the major modes of heat transfer and mass transfer. In fluids, convective heat and mass transfer take place through both diffusion – the random Brownian motion of individual particles in the fluid – and by advection, in which matter or heat is transported by the larger-scale motion of currents in the fluid. In the context of heat and mass transfer, the term “convection” is used to refer to the sum of advective and diffusive transfer. this article includes: 1 Convective heat transfer 2 Natural convection 2.1 Natural convective heat transfer 2.2 Onset of natural convection 3 Forced convection 4 Flames and convection 5 Buoyancy induced convection not due to heat 6 Oceanic convection 7 Vibration convection in gravity fields 8 Scale and rate of convection http://en.wikipedia.
