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一根短剑一样的小棒,一块砖头大小的仪器盒,将棒体往渠水中一插,便能精确地测出水的流量。这种明渠测流技术,目前在世界上尚属首列。1992年4月9日,在日内瓦举办的第20届国际发明展览会上,荣获二等奖。这仪器叫明渠测流棒,是山东省水利科技工作者牛奔用了十年心血发明的。明渠测流技术难度很大,影响因素较多、如水深变化、过水断面变化、流速变化、流速分布不均、不同水质等。牛奔在解决明渠测流中这一系列问题时,他运用普通物理动量定理这一基本定理,以教学作语言,根据流体力学和流体振动力学
A dagger-like rod, a brick-sized instrument case, which plunges the rod into the channel, accurately measures the flow of water. This open channel flow measurement technology, is still the first in the world. April 9, 1992, held in Geneva, the 20th International Invention Exhibition, won the second prize. This instrument is called open channel flow meter, water conservancy science and technology workers in Shandong Province Niu Ben spent ten years of hard work. Open channel flow measurement technology is very difficult, more influencing factors, such as changes in water depth, cross-section changes, changes in flow velocity, uneven distribution of velocity, different water quality. When Niu Ben solved this series of problems in open channel current measurement, he applied the basic theorem of ordinary physical momentum theorem to teaching as a language. According to the principles of fluid mechanics and fluid vibration mechanics