These solutions apply for laminar flow with a Prandtl/Schmidt number greater than 0.6. ==Boundary layer turbine== This effect was exploited in the Tesla turbine, patented by Nikola Tesla in 1913. It is referred to as a bladeless turbine because it uses the boundary layer effect and not a fluid impinging upon the blades as in a conventional turbine...
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http://en.wikipedia.org/wiki/Boundary_layer
in fluid mechanics, thin layer of a flowing gas or liquid in contact with a surface such as that of an airplane wing or of the inside of a pipe. The ... [4 related articles]
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http://www.britannica.com/eb/a-z/b/99
An area in the troposphere which is affected by the solar heating, radioactive cooling, and surface friction of the earth. The height of the boundary layer can range anywhere from 100m to 300 km and coincides with the height at which pollutants are mixed.
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http://www.chemistry-dictionary.com/definition/boundary+layer.php
A very thin layer of air flowing over the surface of an aircraft wing, or airfoil, (as well as other surfaces of the aircraft). The molecules directly touching the surface of the wing are virtually motionless. Each layer of molecules within the boundary layer moves faster than the layer that is clos...
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<radiobiology> In fluid flow, a narrow region next to a fixed boundary or surface where the fluid velocity rapidly changes from zero to some finite value. The term has been generalised to situations with similar mathematics. ... (09 Oct 1997) ...
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http://www.encyclo.co.uk/local/20973
In general, a layer of air adjacent to a bounding surface. Specifically, the term most often refers to the planetary boundary layer, which is the layer within which the effects of friction are significant. For the earth, this layer is considered to be roughly the lowest one or two kilometers of the atmosphere.
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A general term for the layer of air adjacent to a surface.
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A layer of static to slow moving air adjacent to the surfaces of a moving body. Friction between the body and the surrounding air holds back the flow nearest the surfaces, whilst the air further from the body in the mainstream flows past at unabated speed
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the layer of air immediately adjacent to the surface of an airfoil. Its flow, rather than being laminar, is essentially random, or circulatory, and produces a great deal of aerodynamic drag.
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http://www.sportpilot.org/learntofly/glossary.html
[
n] - the layer of slower flow of a fluid past a surface
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http://www.webdictionary.co.uk/definition.php?query=boundary%20layer
A layer of fluid near a surface, where flow is affected by viscous properties of the fluid. At the surface, fluid velocity must be zero, and the boundary layer is a thin film that depends on surface texture, fluid velocity in the 'mainstream of flow,' and fluid mass properties such as salinity.
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The portion of a fluid flowing past a body that is in the immediate vicinity of the body and that has a reduced flow due to the forces of adhesion and viscosity.ExampleThe layer of air next to the Earth's surface, typically a few hundred metres thick. Ordinarily, only the boundary layer is appreciably affected by the properties of the surface. The ...
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The thin layer of air immediately surrounding the surfaces of an aeroplane or airship. This layer is slowed down in flight by the friction exerted on the surface as it moves through the air and represents an important element of drag.
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noun the layer of slower flow of a fluid past a surface
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https://www.encyclo.co.uk/local/20974
the portion of a fluid flowing past a body that is in the immediate vicinity of the body and that has a reduced flow due to the forces of adhesion and viscosity.
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https://www.infoplease.com/dictionary/boundary-layer
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