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The numerical solution of incompressible viscous flow over an aerofoil is obtained by H-type grids and a special difference scheme.

本文用H型网格和特殊的差分格式数值求解了粘性不可压缩叶型绕流。

This conclusion has been verified by the computational results of the three-element airfoil.

某三段翼型的粘性绕流计算也证实了这一结论。

The predict model of hydro-performance of axial flow pump is established on the basis of numerical simulation.

在三维数值模拟的基础上,建立了考虑粘性及间隙影响的轴流泵叶轮水力性能的预估模型。

Abstract; According to current engineering hydrodynamics, there's positively constant head lossin Bernoulli's theorem for identical stream line in viscous fluid, which can later turn into heat anddissipate.

现行工程流体力学与水力学理论通常认为粘性流体元流伯努利方程中的水头损失项是但正的,并且这部分损失的机械能转变为热而耗散掉了。

The adaptive physical model on Coutte Flow based on a motional coordinate is presented,and a solution of a equation for velocity, temperature and rate of heat transfer of a viscous compressible fluid is obtained.

在基于动坐标系的库特剪切流的物理模型上,提出了两平板间可压缩粘性流体的温度,流速与热流速率间的关联式。

In this paper, the JFO condition, satisfied with global mass continuity, is incorporated into an universal Reynolds equation with micro-polar fluid which is solved for the oil film pressure using OSM and FEM. The bearing load capacity and friction resistance were given, and stiffness/damping coefficients and critical rotor mass were obtained by solving a pressure perturbation equation with micro-polar lubricants.

本文采用满足全流场质量连续的JFO边界条件,采用微极性流体的广义雷诺方程来求解油膜压力分布,进而获得油膜承载力和粘性阻力等轴承动力特性量;采用小参数摄动法得出油膜压强扰动方程,并采用有限元法解出扰动压强,积分扰动压强获得油膜的阻尼系数和刚度系数,进而求得了表示轴承油膜稳定性的临界转子质量。

Use pattern of Gao-Yong compressible onflow, 2 dimension of numeric imitate RAE2822 wing section differs in two kinds will shed what the circumstance falls to cross velocity of sound agglutinant circle sort a problem.

梗概: 应用Gao-Yong可压缩湍流模式,数值模拟RAE2822二维翼型在两种不同来流情况下的跨音速粘性绕流新问题。

The dynamics model for the simulation of liquid aluminum alloy in the porous medium is established as the following: x〓=〓 The viscous frictional resistance and additional resistance caused by the liquid metal surface tension when the liquid metal is infiltrating have been fully considered in this model.

在该模型中充分考虑了液态金属渗流时受到的粘性摩擦阻力、液态金属表面张力引起的附加阻力对渗流的影响。

On the basis of simulating unsteady viscous flows, coupling the structure dynamics equations, the problem of flutter is investigated for wings, empennage and wing-body configuration.On the basis, many examples, simulating the steady and unsteady viscous flows around wings, are given in this paper.

在模拟非定常粘性绕流的基础上,与颤振运动方程相耦合,分别对机翼、尾翼和组合体流固耦合现象中颤振问题进行了研究,准确求解跨音速颤振临界速度,分析它们在跨音速范围的颤振规律,并研究分析了机翼剖面形状变化对颤振速度的影响。

The main contents are as follows:Based on the vortex theory and the hydrodynamic basic equations, taking account of the viscosity effect, the expressions of the tangential speed...

主要内容包括:在涡运动理论的基础上,考虑流体的粘性效应,从流体动力学基本方程出发,分析推导了旋流分离器内流体的切向速度和切向应力的分布表达式,定性讨论了旋流分离器外壁的转动对切向速度和切向应力的影响。

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As she looked at Warrington's manly face, and dark, melancholy eyes, she had settled in her mind that he must have been the victim of an unhappy attachment.

每逢看到沃林顿那刚毅的脸,那乌黑、忧郁的眼睛,她便会相信,他一定作过不幸的爱情的受害者。

Maybe they'll disappear into a pothole.

也许他们将在壶穴里消失

But because of its youthful corporate culture—most people are hustled out of the door in their mid-40s—it had no one to send.

但是因为该公司年轻的企业文化——大多数员工在40来岁的时候都被请出公司——一时间没有好的人选。