速度分布

The velocity profile, apparent viscosity and laminar - turbulent transition for dilatant cement slurry flow through ecentric annuli are studied in this paper.

本文研究了胀流型水泥浆在偏心环空中的速度分布、视粘度及流动状态的转变等问题。

Validation of the method is presented by calculating the Taylor's vortex array and a double layer flow problem.

并以Taylor涡和流体的初始流场为双层速度分布的问题为例，得到了很好的结果。

Then the coefficients of entrance region effect and the relations between them, and the flowbehaviour index n can be obtained by solving the energy integral equation. Under the assumption of the velocity distribution within boundary layer: f = 1-(1-η)n+1/n for example, co...

以边界层内幂律流体层流速度分布假设f=(1一η)~(n+1/n为特例，所求出的结果与文献[4]中的理论值和实验值比较表明，本文的计算是既简便又可靠的。

Based on the prior information obtained by qualitative inversion, the two stages inversion method was put forward. That is, the first stage is that distinguishing the high-quality element and non- high-quality element, and determining the initial iteration value of element sound velocity reasonably. The second stage is that treating differentially the constraint weights of the high-quality element and non- high-quality element, and then quantitatively inversing the final sound velocity distribution. The results of two concrete specimens indicate that the two stages inversion method can inhibit artifacts effectively and has better defect identification effect than normal one stage inversion.

在获取定性反演先验信息的基础上，提出了两阶段反演的方法：第一阶段，区分优质像元和非优质像元，合理确定像元声速的迭代初值；第二阶段，区别对待优质像元和非优质像元的约束权重，定量反演最终的速度分布。2个混凝土试件的模型试验表明，两阶段反演能有效抑制伪像，具有比常规的一阶段反演更好的缺陷识别效果。

Therefore, a similarity solution of velocity distribution exists in such unsteady Navier-Stokes equations; In chapter 3, the unsteady flow of a viscoelastic fluid with the fractional derivative Maxwell model in rectangular tube is studied.

因而，给出了不定常Navier-Stokes方程速度分布的一相似性解；第三章研究了具有分数阶Maxwell模型的粘弹性流体在矩形管内的不定常流动。

Furthermore, the velocity profile in fully developed region is a gaussian distribution.

射流的起始段由于势流核心的存在而与充分发展段具有不同的断面速度分布。

There are four emphases in -research, for instance, flow state in pipeline, distribution of concentration and velocity, deposition-limit velocity and calculation of flow resistance or head loss.

研究重点主要集中在管内流动状态、浓度和速度分布、临界流速及阻力损失计算四个方面。

In order to clarify the flow characteristics of supercavitation area, supercavitation flow velocity distribution around a hydrofoil are addressed along with both high-speed visualization and LDV measurements.

为了了解超空化流动区域的流动特性，观察了超空化流动区域的流动结构；采用LDV的方法测量了超空化发生时绕水翼的速度分布大小。

The calculation results of three -dimensional velocity distribution of impeller discharge flow roughly meet the experimental results.

计算所得的桨叶排出流的三维速度分布与实验结果大体一致。

We also show that an errroneous assumption about the geometry of the universe and different infall models only slightly change the results.

上面探讨的星系成团性和速度分布特征是与星系自身的物理性质紧密联系的，而这二者在很大程度上都依赖于星系的摇篮-暗物质晕。

In the negative and interrogative forms, of course, this is identical to the non-emphatic forms.

。但是，在否定句或疑问句里，这种带有"do"的方法表达的效果却没有什么强调的意思。

Go down on one's knees;kneel down

屈膝跪下。。。下跪祈祷