The test of the Reynolds Number shows the rill flow pattern is turbulent flow, and the test of the Froude Number shows the rill flow maybe either sub critical flow or supercritical flow.

• 雷诺数试验结果表明 ,坡面细沟股流属于紊流范围 ,从弗劳德数的试验结果看 ,细沟股流有可能为缓流 ,也有可能为急流