The high-speed wind blows into the air groove to cause the wind tunnel effect, which enhances and maintains the high wind speed, making it easier for the water to be blown away.

Design and Geometry: The shape, length, and width of the air knife determine its efficiency and pressure drop. Narrower gaps or longer knife designs can lead to higher pressure drops.

The effective distance of an air knife refers to the maximum reach at which the high-velocity air stream generated by the device remains sufficiently powerful to perform its intended function. It is the point beyond which the air velocity drops below a threshold where it might not effectively remove contaminants or moisture from the targeted surface. This parameter depends on various factors including the air knife design, air pressure, and the specific characteristics of the application.

The working principle of an air knife involves the high-velocity air being directed onto a surface, creating a sheet or curtain of air. This focused, high-speed airstream has several practical applications: