- Air knife
An air knife is normally used in
manufacturingor as the first step in a recursive recyclingprocess to separate lighter or smaller particles from other components for use in later or subsequent steps, post manufacturing parts drying and conveyor cleaning, part of component cleaning. The knife consists of a high intensity, uniform sheet of laminar airflow sometimes known as streamline flow.
When a fluid flows in parallel layers, with no disruption between the layers it has laminar characteristics.
Fluid dynamics: Laminar flow is a flow regime characterized by high momentumdiffusion, low momentum convection, and pressureand velocityindependence from time. It is the opposite of turbulent flow. The dimensionless Reynolds numbercharacterizes whether flow conditions lead to laminar or turbulent flow. Aeronautics: Air flowing over an aircraftwing. The boundary layer is a very thin sheet of air lying over the surface of the wing, as well as all other surfaces of the craft. Because air has viscosity, this layer of air tends to adhere to the wing. As the wing moves forward through the air, the boundary layer at first flows smoothly over the streamlined shape of the airfoil. In this aspect the flow is called laminar or the laminar layer.
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Look at other dictionaries:
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knife — knife1 [ naıf ] (plural knives [ naıvz ] ) noun count *** an object with a sharp blade for cutting food: You need a sharp knife for the steak. knives and forks a kitchen/bread/carving knife a. an object with a blade, used as a weapon or tool: He… … Usage of the words and phrases in modern English
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knife — knife1 W3S3 [naıf] n plural knives [naıvz] ↑flipper, ↑knife, ↑tank, ↑wetsuit [: Old English; Origin: cnif] 1.) a metal blade fixed into a handle, used for cutting or as a weapon →↑scalpel ▪ a knife and fork … Dictionary of contemporary English