沙粒佛汝德数相似原理 grain Froude similarity
低佛汝德数 low Froude number
低佛汝德数水跃 hydraulic jump of low Froude number
长期以来，人们一直用临界流速或临界佛汝德数的准则来确定冰塞的演变。
The critical velocity, or critical Froude number criterion has long been accepted as a means of determining frazil jam profiles.
研究了宽尾墩位置、始扩点水流佛汝德数与堰上水头之间的关系，导出了与水头损失、闸门宽度有关的计算公式。
It is shown that the relationship exists among the location of the flaring gate piers, the Froude number at the section of starting flare, the weir head, the head loss and the gate width.
应用推荐