查询词典 vector flow of vector field

3The transience multiphase flow software was employed for simulating pipeline's slug flow behavior in this paper. The computational results of OLGA have been interpretted by relevant theory.The changes of pressure and holdup in the slug flow analyzed were explained, and its inherent regularity was also revealed in detail.Through which, the cause to slug flow was found out, and the flow type of slug could be suppress or controlled effectively.

3采用瞬态多相流软件对管道流动特性进行模拟研究，用相关理论解释OLGA软件的计算结果，主要针对段塞流压力、持液率的变化规律进行分析，详尽地揭示其内在规律，确定段塞流产生的原因，并进行模拟控制调节。

Whether current field , temperature field and flow field are designed reasonably or not are critical for the design of rare earth electrolysis cell, therefore, the study on current field and temperature field is very important.

怎么样设计合理的电场、热场、流场是决定电解槽设计好坏的关键因素，所以，有关电场、热场、流场的研究显得十分重要。

The total amount of flux spreading is an infinite volume at any point of the vector field, and its manifestation/result is determinate by the net flow of consciousness in a given region of the vector field.

这总流量在矢量场中的任一点是无穷大的，它的显现结果决定于该矢量场中指定区域内意识的净流入。

Field data of pedestrian flow was collected in Chinese comprehensive passenger transport terminal—Xizhimen underground station using video recording, and then selected and analyzed by statistic analysis software SPSS. Parameters relation models for pedestrian flow on different terminal facilities were established based on data statistics. The results show that the pedestrian flow-density relation model is quadratic equation in corridor; the flow-space relation model is quadratic equation when space is below a certain value and is logarithmic equation when space is above the value; the speed-density relation model is linear equation. The models on stairs show the similar characteristics, but the eigenvalue is different.

对国内综合交通客运枢纽——北京西直门地铁站行人流数据进行视频采集，采用统计分析软件SPSS对行人流参数数据进行筛选及拟合分析，建立了不同设施的行人流参数关系曲线及函数模型，研究结果表明，水平通道处行人流量与密度呈二次函数关系、流量与空间在某一临界点两侧分别呈二次函数及对数函数关系、速度与密度呈线性关系，楼梯处与之相似但特征点数值存在差异。

Comparison between the velocity distributions at the different flow rate conditions showed that increasing the flow rate was help to improving the velocity distribution. The periodic mean field on r-6 plane at different axis positions showed that the flow within the vaned diffuser, especially within the inlet region, was periodic unsteady when impeller located at the different circumferential position, just as the flow within the vaneless diffuser.

有叶扩压器内平均流场的分析表明，在定常流动的假设下，不同流量工况下有叶扩压器的内部流动也呈现为沿轴线向后盘方向推移流动状况逐渐恶劣的分布规律，表明二元叶片构成的平行直壁有叶扩压器对轴向不均匀流动的掺混作用仍然不大。

The rotary character of flow can be seen clearly through tangent plane flow field. The turbulent intensity of the inner-straight flow is lower than the outer-swirling flow.

模拟还得到了该流场存在两个较大的外回流区，通过切面流场可以很清晰地看出气流的旋转特性。

Comparing with real engineering, analyze the experiment and simulation results, the conclusion is that the mixture model can simulate the flow field of gas-liquid two-phase well; the effect of plain plug flow aeration is better than circumvolve plug flow aeration's; for the same plug flow aeration , the effect of 20m/s aeration is better than 10m/s's and

结合实际工程的运行，对实验结果及模拟结果进行对比分析，结论为：采用混合模型能够很好的模拟曝气池内气液两相流的流场；平移推流式曝气比旋转推流式底层曝气的曝气效果好；在同种曝气方式，相同工况下，20m/s的曝气速度的曝气效果要比10m/s、30m/s的曝气速度的曝气效果好。

The density flow in horizontal-flow sedimentation basin is discussed, and the flow field is analyzed, the coagulative precipitation effect for different plans are compared, at the same time the measures of abatement of density flow are discussed.

对影响混凝沉淀效果最大的水流因素—平流沉淀池中异重流的形成原因进行了讨论，对其流场进行了分析，并对不同方案混凝沉淀效果进行了比较，同时，就减弱异重流的条件进行了讨论。

Based on analysis of the current state of the flow pattern modeling abroad and at home, explains the meaning of the mathematical simulation of the flows in the valve.(2) Comparing flow simulation data of jet pump with its experimental one, the feasibility and reliability of FLUENT used for flow simulation are proved.(3) Based on the characteristic of valves, the fluid field analysis of specific ring-spray type flow-adjustable is finished. The valve structure is optimized to meet the need, which makes it have such advantages:(1)smaller vortex area and faintish vortex intensity, so the vibration of vortex is controlled effectively;(2)the pressure is distributed more equality, the transition area is larger.

论文的主要内容包括：(1)简述了阀门研究的现状与发展，在分析与总结国内外流体流动模拟研究的基础上，探讨开展阀门内水流运动数值模拟的意义；(2)对特定型号的射流泵进行了内部流场的数值模拟研究，并与实验数据相比较，验证了应用Fluent进行数值模拟的可行性和可靠性；(3)针对调流阀的特点，对特大口径环喷式流量调节阀进行流场计算，其设计指导思想如下： 1、控制旋涡，减小旋涡区，减小涡的强度； 2、控制压力分布，使阀体受力更均匀，改善局部应力状态，提高阀门使用的安全性； 3、最小绝对压力高于水的汽化压力，不产生汽蚀。

This scheme can be applied to flow field computation of nonviscous or viscous flow, laminar or turbulent flow and compressible or incompressible flow.

本文首次提出了基于分布参数最优控制理论、雷诺平均N—S方程的平面叶栅反问题的普遍形式——最优化设计的理论和方法。

Diabetes is a social disease that affects several million people worldwide.

糖尿病是一个社会性疾病，全世界有数百万人罹患此病。

I'll call you on Friday to see if we can reschedule our luncheon meeting at your convenience.

我星期五会给您打电话在您方便的时候我们重新安排我们的午餐约会。