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Encyclopedia > Convective overshoot

Convective overshoot is the phenomenon of convection carrying material beyond an unstable region of convection, into a stratified, stable region. Overshoot is caused by the momentum of the convecting material, which carries the material beyond the convecting region. Convection is the transfer of heat by the motion of or within a fluid. ... Instability in systems is generally characterized by some of the outputs or internal states growing without bounds. ... Stratification is the building up of layers of deposits, and can have several variations of meaning: Social stratification, is the dividing of a society into levels based on wealth or power. ...


One example is thermal columns extending above the top of the troposphere in Earth's atmosphere: warm air rising from the surface 'should' stop circulating at the tropopause, but its momentum carries it up into the stratosphere. This overshoot is responsible for most of the turbulence experienced in the cruise phase of commercial air flights. This article is about the atmospheric phenomenon. ... The troposphere is the lowermost portion of Earths atmosphere and the one in which most weather phenomena occur. ... The tropopause is a boundary region in the atmosphere between the troposphere and the stratosphere. ... The Stratosphere is also a major hotel and casino resort in Las Vegas. ... Turbulent flow around an obstacle; the flow further away is laminar Laminar and turbulent water flow over the hull of a submarine Turbulence creating a vortex on an airplane wing In fluid dynamics, turbulence or turbulent flow is a flow regime characterized by low-momentum diffusion, high momentum convection, and...


Another example of convective overshoot is at the base of the convection zone in the solar interior. The heat of the Sun's thermonuclear fusion is carried outward by radiation in the deep interior radiative zone and by convective circulation in the outer convection zone, but cool sinking material from the surface penetrates farther into the radiative zone than naive theory would suggest. This affects the heat transfer rate and the temperature of the solar interior. The convection zone is the outermost layer of the suns interior. ... A Sun is the star at the centre of a solar system. ... In physics, nuclear fusion (a thermonuclear reaction) is a process in which two nuclei join, forming a larger nucleus and releasing energy. ... Radiation generally means the transmission of objects or information from a source into a surrounding medium or destination. ... The convection zone is the outermost layer of the suns interior. ...


  Results from FactBites:
 
Convective overshoot - Wikipedia, the free encyclopedia (193 words)
Convective overshoot is the phenomenon of convection carrying material beyond an unstable region of convection, into a stratified, stable region.
Overshoot is caused by the momentum of the convecting material, which carries the material beyond the convecting region.
Another example of convective overshoot is at the base of the convection zone in the solar interior.
  More results at FactBites »


 
 

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