X-673-64-1F REV 001 DEC. â94 GODDARD SPACE FLIGHT CENTER, Greenbelt, Maryland 58 ENGINEERING DRAWING STANDARDS MANUAL The following note shall be added to the tooling drawing: THIS TOOLING IS USED TO FABRICATE PIECE PART GX-XXXXXXX.
The transfer of heat by the movement of a heated fluid is called convection. Fluids include liquids and gases. During convection, heated particles of a fluid begin to. flow, transferring heat energy from one part of the fluid to another.
Convection is the movement of groups of molecules within fluids such as gases and liquids, including molten rock (rheid). Convection takes place through advection, diffusion or both. Convection cannot take place in solids because neither bulk current flows nor significant diffusion of matter can take place in solids. Diffusion of heat can take place in solids, but that is called heat conduction.