动能

Considering gas-solid flow in annular space and BoYun Guo's hydrodynamic parameters model, For aired underbalanced drilling, combined with the minimum energy Angel law and based on the mininum gas injection scale at the key points, it is established a bottom-hole pressure model for gas-solid two phase stream; meanwhile, calculated the downhole depth of the Downhole-Deployment-Valves; and then fabricated the corresponding calculation software. For streamingly underbalanced drilling, it is fully given a step-by-step solution based on analysis from the relationship of various wellbore pressures at the course of underbalanced drilling as well as from the streaming behavior in different wellbore sections, adding consideration on multiphase stream pressure drop and Downhole-Deployment- Valve into account, it is of common application for development wells.

对于气体欠平衡钻井，考虑环空为气固两相流，参考BoYun Guo的流体力学参数计算模型，结合Angel的最小动能法标准，从满足关键点处的最小注气量入手，建立了气固两相流的井底压力计算模型，同时对套管阀的下入深度进行了计算，并利用VB语言编制了相应的计算软件；对于液体欠平衡钻井，考虑环空为多相流，在充分分析欠平衡钻井井内基本压力关系的基础上，从环空多相流压降分析入手，通过对井筒内各段的流态分析，逐段求解。

Adopt movable and recycled type FRP wind tunner, the strengthening design of the product can resist severe storm strike.

风筒 采用动能回收型FRP风筒，产品加强设计能抵御强台风袭击。

Its principle is use feed pump to put the premixed material into the host milling barrel in which proper mill medium is addedand reasonable designed arc line style blades are installed on the main axis symmetrically.Explosion proof machine transits the energy used for separating and milling to main axis through static electricity proof V tape belt to drive blade rotate in high speed, thus it will offer mill medium with high intensity function which can drive beads do random motion and bump with separated grain to create strong cutting force and then cut the material into ion or dissociation,thereby the material will keep in permanent ultramicron separation state.

其原理是利用送料泵浦将预先已搅拌好的物料送入主机研磨桶内，研磨桶内加入适量的研磨介质，合理设计的弧线型葉片对称地安装在主轴上，防爆電机通过防静電V型皮带把分散和研磨所需的能量传送到主轴上带动分散葉片高速转动，给予研磨介质以高强度的动能，带动珠子无规则运动与被分散物料之颗粒撞击产生强大的剪切力，使物料变为离子或游离子从而达到永久的超细微粒分离状态。

Fourthly, in baffled and unbaffled reactor, the improved ALE (Arbitrary Lagrange-Euler) method is applied to compute and simulate the 3D-flow field of air-water mixture, the velocity and kinetic energy distributions are analyzed and the processes of flow development are simulated, the results are validated with flow visualization experiment.

然后，采用改进的ALE(Arbitrary Lagrange-Euler)方法，对有、无挡板的反应器的气液混合物三维流场进行数值计算和模拟，分析了反应器内的速度和动能分布，模拟了流场的发展过程，并用流场显示实验进行了验证。

According to the principle of mutual transformation between potential energy and kinetic energy,the vertically falling law of power law fluid by the action of unconstant static pressure and the relation between rheological parameter and time were studied,thus providing a theoretical basis for calculating the rheological parameters of fluid in funnel viscomete...

根据位能与动能的变化关系，作者研究了在非恒定静压作用下幂律流体垂直下落的规律及流变参数与时间的关系，从而为计算漏斗粘度计中流体的流变参数提供了理论依据。

Results show this new-inlet hydrocyclone has original sides on liquid spin-making and stabilize its flow field. Moreover this gradual contraction inlet may translate some pressure energy of liquid into kinetic energy and increase circumrotate speed. These play active actions on improving separation efficiency. Moreover, the uniflow hydrocyclone has the traits of big capacity, low pressure drop and a little low separation efficiency in contrast to the returned flow hydrocyclone. This hydrocyclone system has the higher separation property in contrast to the single-level hydrocyclone.

实验结果表明：这种新型入口结构水力旋流器在流体的导旋方面具有独到之处，能很好的形成稳定的流场；同时这种渐缩式入口方式，可将来液的一部分压能逐渐转化为动能，提高了旋流速度，对提高分离效率起到积极作用；采用新型入口的直流式水力旋流器比返流式水力旋流器压降低，处理量大且分离效率略低；组成返流式水力旋流器串联系统相对于单级水力旋流器具有更高的分离性能。

However, for unstably stratified turbulent flow, some typical statistical quantities, e.

同时，这些结构也影响着湍动能和湍流热输运特性的变化。

The results indicate: diversion shell can transform the kinetic energy of fluid into pressure energy well, and eliminate the circumferential component of fluid; the inlet incidence angle of vaned diffuser increases at the condition of O.8Q, and it results in flow separation very likely and the hydraulic loss increases; it is nearly non-impact inflow at the condition of 1.2Q, and the velocity distribution is uniform at the inlet of vaned diffuser and flow separation dose not appear.

结果表明：导流壳能很好地将叶轮中流出的流体的动能转化为压能，并消除速度的圆周分量；在0.8Q工况下，空间导叶的进口冲角增大，容易在空间导叶背面产生流动分离，造成水力损失增加；在1.2Q工况下，空间导叶的进口接近无冲击入流，在进口处流速分布较均匀，其内部未发生流动分离现象。

With this Fruit Powered Clock you will essentially replicate this experiment by Volta.

那这和我们的水果动能时钟有什么关系呢？

While it is a certainty that waddling does burn a lot of calories, the penguins actually save energy in the long run because kinetic energy helps to keep them moving forward.

尽管摇摆行走会燃烧掉大量卡路里是个不争的事实，但企鹅终究还是能藉此节省能量，因为这当中所产生的动能有助于带动他们的身体向前移动。

Do you know, i need you to come back

你知道吗，我需要你回来

Yang yinshu、Wang xiangsheng、Li decang,The first discovery of haemaphysalis conicinna.

1〕 杨银书，王祥生，李德昌。安徽省首次发现嗜群血蜱。