Astrophysics (index)


(transport of something through a fluid's motion)

Advection is the transport of something in a fluid as the fluid moves, e.g., through expansion, convection, or Gravity. The "something" transported can be a substance, or a condition, e.g., pollutant particles, water vapor, gas makeup, heat energy, or electric charge. The term can be used for liquids, such as in rivers or oceans, or gases, such as in Atmospheres or gas clouds.