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Water drumming, the tambor de agua (Spanish: drum of water), bungo, or liquindi, of African origin, is water, such as a river, which is played by striking the surface directly with one's hands. It is performed by the Baka in Africa, and in South America by the descendants of formerly enslaved people , with strokes comparable to the culoepuya .
The freshwater drum prefers clear water, but it is tolerant of turbid and murky water. They prefer the bottom to be clean sand and gravel substrates. [22] The diet of the freshwater drum is generally benthic and composed of macroinvertebrates (mainly aquatic insect larvae and bivalve mussels), as well as small fish in certain ecosystems. [23]
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The ocean drum is held by the frame, with the heads horizontal, and played by rolling the wrists so the drum gently tilts in all directions. The metal beads inside roll over the bottom head like water rolling over the shore. [2] Different speeds produce different sounds.
It consists of a large steam drum vertically connected to a smaller water drum (a.k.a. "mud drum") via multiple steam-generating tubes. These drums and tubes as well as the oil-fired burner are enclosed by water-walls - additional water-filled tubes spaced close together so as to prevent gas flow between them.
An O-type boiler is a form of water-tube boiler.It is named, like the D-type and A-type boilers, from the approximate shape of its tubes.. They are characterised by single steam and water drums vertically above each other, with curved vertical water tubes to the sides forming an overall cylindrical volume.
The fundamental characteristic of the "three-drum" design is the arrangement of a steam drum above two water drums, in a triangular layout. Water tubes fill in the two sides of this triangle between the drums, and the furnace is in the centre. The whole assembly is then enclosed in a casing, leading to the exhaust flue.
Usually the lower part of the water drums were exposed outside the casing, but only the ends of the steam drum emerged. The water level was at around one-third of the steam drum diameter, enough to cover the ends of the submerged water-tubes. The weight of the boiler rested on the water drums, and thus on supports from the firing flat's deck.