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There exists a maximum drag-coefficient in the drag curves corresponding to a critical Froude number. 与深度的关系是在跃层以上阻力系数最大,在跃层中心阻力系数最小,下层中随着深度的增大而减小。内波频率对阻力系数影响不大,但存在某一共振频率使得阻力系数增大。
The critical state of flow is defined as the condition for which the Froude number is equal to unity. 将弗氏标数等于1的情况规定为流动的临界状态。
The argument hangs around what is known as a Froude number. 问题就在于那个著名的“弗鲁德值”。
The hydraulic jump can be distinguished using the Froude number. 进一步研究表明，河槽束狭加大涨潮流速，河床淤浅则减缓潮波传速。
Furthermore, the Froude number and density Froude number of the. 提出模型中弗劳德数和密度弗劳德数必须同时与原型相等。
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
It is assumed that the free surface is rigid, and this corresponds to the low Froude number maneuvers in calm water. 自由表面假定为固化平面,这与静水中低佛鲁德数操纵情况相符。
The Froude number of flow is the factor of flow status: supercritical flow or subcritical flow. 由流体流动的福劳德数可以确定流动的缓急程度。
The volume of aeration was affected by the Froude number and the height of the cavity pocket at the back of the gate. 门后通气量主要受上游来流的弗劳德数和门后空腔相对高度的影响。
If the Froude number exceeds 0.5, then it is more efficient to run than to walk. 如果佛氏数大于0.;5，那么奔跑比行走更有效率。
The results showed that the effects of Froude number and the dimensionless height of ... 研究结果表明,弗鲁德数及无因次装料高度对最大扭矩与瞬时扭矩的比率及平均功耗有显著的影响。
It shows that the depth rise and maximum width of backflow zone depend on froude number and bend angle. 根据能量和动量守恒原理，导出了计算上游水位壅高和下游回流区最大宽度的理论关系式，并用室内实验结果进行了验证。
Finally,the uncertainties of the form factor(1+k),Froude number(Fr),and the breakwater resistance of the ship model were analyzed. 文中还对该船模的形状因子(1+K)、傅汝德数(Fr)以及水状态(破水阻力R)进行了不确定度分析;并给出了分析的结果.
Measurements of ground concentration reveal that as the densimetic Froude number grows, the lower flammability distance (LFD) increases. 但随著下游距离增加，云团持续扩散，使得云团最大浓度之差异性变小。
Some common problems are studied which rose in design of hydraulic jump dissipaters for big unit width flux and small Froude number flow. 阐述在设计大单宽流量低佛氏数水跃消能工所遇到的问题,以及此类型泄水建筑物水跃消能的特点和所要解决的问题。
The calculation of the centerline velocity and temperature is made for a wide range of exit Froude number and environment stratification. 得出中性浮力点以前的形成后区,可分为非浮力区、过渡区和卷流区。
It showed that the Froude number was reasonable, and the approach to use reduced-scale model technique for studying the natural smoke filling with pre-flash fire is practicable. 相似模型实验结果表明：烟气自然填充过程中，存在烟气分层现象，但没有明显的分界面；
Charts shown in Figures 8, 9 and 10 can be used for judging the posibility of occureance and the type of vortices at the entrance with a similar Froude number. 提供的曲线图8、9和10可用以判别具有类似佛劳德数的进水口在运行时可能产生漩涡的条件以及类型;
In low water head hydraulic constructions,a common hydraulic problem is energy dissipation for small Froude number water flow because the energy dissipation is less efficient. 低水头闸坝工程的一个普遍水力学问题是低佛氏数水流的消能防冲,其特点是消能率低,为达到较好的消能效果,常常要在消力池加一些辅助消能工程。
Concentration distributions of the heavy gas for different gas spill angles, and densimetric Froude numbers were measured and investigated. 藉由风洞实验量测结果，分析研究当重质气体在各种溢漏角度、以及溢漏密度福禄数条件下对于重质气体浓度扩散之影响效应。