convection does not happen in the state of matter of ideal gases.
in which state of matter does convection not happen?
ideal gases
convection





















































convection is the heat transfer due to the bulk movement of molecules within fluids such as gases and liquids, including molten rock (rheid). convection includes sub-mechanisms of advection (directional bulk-flow transfer of heat), and diffusion (non-directional transfer of energy or mass particles along a concentration gradient).





















































convection cannot take place in most solids because neither bulk current flows nor significant diffusion of matter can take place. diffusion of heat takes place in rigid solids, but that is called heat conduction. convection, additionally may take place in soft solids or mixtures where solid particles can move past each other.
convection
although forced convection from thermal gas expansion in zero-g does not fuel a fire as well as natural convection in a gravity field, some types of artificial forced convection are far more efficient than free convection, as they are not limited by natural mechanisms. for instance, a convection oven works by forced convection, as a fan which rapidly circulates hot air forces heat into food faster than would naturally happen due to simple heating without the fan.





















































section::::convection mechanisms.:gravitational or buoyant convection.
convection