新型轻便流速仪动态特性的研究

文章介绍了一种适宜近岸表层水域中测流用的流速仪,该仪器为旋桨式,受波浪影响小,动态特性好,可供测量海洋、港湾、江河、湖泊、水库、河口不同深度下(含表层)水流的速度和方向。作者根据测流中的实际问题,就流速仪的动态方程及其特性进行研究,并对转子式流速仪在水流中使用的局限性进行了探讨。

Research on A New Kind of Protable Current Meter and Its Dynamic Characteristics

In recent years, with the rapid development in the coastal engineering of our country and to meet the demand in the domestic market, a kind of current meter suitable for measuring the coastal currents in near surface layers should be developed urgently. Therefore, the new kind Current Meter has been designed and manufactured,it is a kind of propeller current meters with excellent dynamic characteristics and it is less an affected by waves.The new kind current meter can be used to measure the current speed and direction at different water depths in oceans, rivers, lakes, reseriors and at ports and estuaries, especially in extrashallow water. The Current Meter, featured by rational desikgn seable properties, operatonal reliability, small, volume, light weight and less power consumption,is a new kind of portable current measuring instruments.Practical problems concerning direct current measurement in very shallow water including the dynamic equation and performance of a rotor type current meter are discussed in this paper. The application of this current meter in such area is also addressed. Further on the author introduces a propeller type current meter which is less affected by waves in upper layer of water and its dynamic effectness.