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A bubble curtain in Florida used to stop debris entering the marina. A bubble curtain is a system that produces bubbles in a deliberate arrangement in water. It is also called pneumatic barrier. The technique is based on bubbles of air (gas) being let out under the water surface, commonly on the bottom.
The Mitsubishi Air Lubrication System (MALS) [1] is a system that reduces the viscous resistance component of the hull of ship by creating a layer of air bubbles below the hull of the ship. This reduces frictional resistance between the hull and the seawater. The system has been designed for bulk carriers and passenger ships. [2]
Air bubbling through a perforated pipe causes an upward water flow that slows the spread of oil. It can also be used to stop fish from entering polluted water . A further application of the pneumatic barrier is to decrease the salt-water exchange in navigation locks and prevent salt intrusion in rivers. . [ 1 ]
Manufacturers of diffused aeration systems claim that converting from coarse bubble to fine bubble system should yield a 50 percent energy cost savings. [2] Specifically, in aeration tanks, a system that utilizes coarse bubble diffusers requires 30 to 40 percent more process air than a fine bubble diffused air system to provide the same level ...
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Interfacial aeration is defined as the air entrainment process along an air–water interface, usually parallel to the flow direction. In hydraulic structures, free-surface aeration is commonly observed: i.e., the white waters. The air bubble entrainment may be localised or continuous along an interface (water jets, spillway chutes). Despite ...
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Bubble wrap Square-shaped bubble wrap for house insulation. Bubble wrap is a pliable transparent plastic material commonly used for protecting fragile items during shipping. . Known for its cushioning air-filled bubbles, it has also become a cultural icon, celebrated for its satisfying popping sound and alternative uses as a stress-relief