China's high-speed bubble boat research breakthrough
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The reporter learned from Wuhan University of Technology that the research on the high-speed bubble boat type of the National Science and Technology Research Project “863 Program†led by Professor Chen Keqiang of the school has successfully passed the acceptance of the Ministry of Science and Technology.
A bubble boat is a type of ship that uses bubble drag reduction technology. The research team conducted in-depth research on the mechanism of microbubble drag reduction of high-speed craft, the way of bubble generation, the design of jet device, the position of jet, the amount of jet, the attitude of the jet, and the influence of air bubbles on the propulsion efficiency. Many problems have been explored in the scale effect of resistance.
According to reports, after applying the practice results, the frictional resistance of the bottom surface of the ship can be reduced, so that the ship is both high-speed and energy-saving. According to different speeds and different ship types, energy saving can be 7% to 30%. At the same time, the research team also obtained two utility model patents for the bubble ship type and jet device.
Chen Keqiang told reporters that ship energy conservation has always been a difficult point for the shipbuilding industry to overcome. This research can not only achieve energy saving and fuel saving, but also reduce operating costs. At the same time, the microbubble drag reduction technology also has certain significance for the submarine's shock absorption and stealth.
It is reported that the ship bubble reduction technology is currently only used in the flat-bottom and high-speed boats of a few countries such as Russia.