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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]
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.
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 ]
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
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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These systems used single point injection of air into the liquid stream, normally through a foot valve at the bottom of the string. Gas lift was used as early as 1864 in Pennsylvania to lift oil wells, also using compressed air, via an air pipe bringing the air to the bottom of the well. Air was used in Texas for large-scale artificial lift.
An inflatable air cushion is a bag of fabric or plastic that can be inflated to provide cushioning. Unlike bubble wrap, inflatable air cushions have a check valve to allow the cushion to be inflated or sometimes deflated. Samsung toner packaging in inflatable air cushion Impact limiter, JPL Vacuum chamber for testing leaks in inflatable cushion.