流,由于管子为光管,则??0.31640.3164??0.029842,所以代入式Re0.2512636.50.25(100??1.5)v2?6?9.81?58.86,可求出
30?10?2?3.623?800则其相应的雷诺数为Re???12601.7?2320,为湍
?0.069dv?流,由于管子为光管,则??0.31640.3164??0.029863,所以代入式Re0.2512601.70.25(100??1.5)v2?6?9.81?58.86,可求出
所以,管中的流速为v?3.622m?s?1,所以管中的体积流量为
qv??d24v???(30?10?2)2?3.6224?0.2560m3?s?1