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Τι (ποιος) είναι boundary layer - ορισμός
Boundary layer
LAYER OF FLUID IN THE IMMEDIATE VICINITY OF A BOUNDING SURFACE
Boundary layer effect; Boundary layers; Boundary Layer; Boundary-layer; Boundary layer theory; Boundary layer flow; Convective boundary layer; Surface boundary layer; Turbulent boundary layer; User:Lethepku/sandbox; Draft:Convective Boundary Layer; Shear layers; Fluid boundary layer; Convective Boundary Layer; Boundary-layer effect
In physics and fluid mechanics, a boundary layer is the thin layer of fluid in the immediate vicinity of a bounding surface formed by the fluid flowing along the surface. The fluid's interaction with the wall induces a no-slip boundary condition (zero velocity at the wall).
boundary layer
LAYER OF FLUID IN THE IMMEDIATE VICINITY OF A BOUNDING SURFACE
Boundary layer effect; Boundary layers; Boundary Layer; Boundary-layer; Boundary layer theory; Boundary layer flow; Convective boundary layer; Surface boundary layer; Turbulent boundary layer; User:Lethepku/sandbox; Draft:Convective Boundary Layer; Shear layers; Fluid boundary layer; Convective Boundary Layer; Boundary-layer effect
¦ noun a layer of stationary fluid (such as water or air) surrounding an immersed moving object.
Planetary boundary layer
![Regents Park]] twin towers and out over [[Lake Michigan]]](https://commons.wikimedia.org/wiki/Special:FilePath/20120629 atmospheric thermocline.JPG?width=200 "Regents Park]] twin towers and out over [[Lake Michigan]]")
LOWEST PART OF THE ATMOSPHERE DIRECTLY INFLUENCED BY CONTACT WITH THE PLANETARY SURFACE
Atmospheric boundary layer; Peplosphere; Stably stratified planetary boundary layer; Planetary Boundary Layer; Atmosphere ground layer; Free atmosphere; Nocturnal planetary boundary layer
In meteorology, the planetary boundary layer (PBL), also known as the atmospheric boundary layer (ABL) or peplosphere, is the lowest part of the atmosphere and its behaviour is directly influenced by its contact with a planetary surface. On Earth it usually responds to changes in surface radiative forcing in an hour or less.
Παραδείγματα από το σώμα κειμένου για boundary layer
1. A flat surface enables the orbiter to enjoy a smooth ride, knifing through a silky "boundary layer" of hot gas that envelops the shuttle as it decelerates.
2. A protruding gap filler, however, can "trip" this boundary layer and create turbulence that results in much higher hot–spot temperatures.
3. The fear was that the protruding strips of fabric could interfere with a phenomenon called a boundary layer transition, during which the flow of air over the shuttle‘s surface on reentry changes from laminar (smooth) to turbulent.