查询词典 turbulence

The standard turbulence model has been modified to acquire more precise prediction for the turbulent axisymmetric sudden expansion pipe flows.

本文对单相湍流标准模型进行修正，提高了其对圆管突扩湍流的预测精度。

This study experimentally examined the heat transfer characteristics of 180-deg turning duct under forced convection cooling, as the internal cooling structure of 180-deg turning duct is widely applied to industrial cooling. While several perforated holes were separately arranged within the 180-deg turning duct, the cold flow of better cooling capability was guided in the first duct into the second duct in advance, so as to reduce the overheating of the second duct and realize uniform cooling of the machine members. In addition, the centrally separated holes could yield extra turbulence against the air current, and the interaction between bypass air current and mainstream may possibly improve the overall heat transfer capability.

本研究系以实验方法探讨180度转弯通道於强制对流冷却下之热传递特性，180度转弯通道之内部冷却构型在工业冷却之应用非常广泛，本研究设计将180度转弯通道其中间分隔具多个穿孔，目的在将第一流道内具较佳冷却能力之冷流提早引入第二流道，以减少第二流道产生过热情况，如此可使得机件获得均匀之冷却，此外，中间分隔上之穿孔对气流也具有额外之扰动效果、流经穿孔之旁通气流与主流交互作用，这都有可能增益整体热传能力。

Ultra-lightweight forged-aluminium 5-spoke wheels have fin-shaped plastic fairings to suppress air turbulence, reducing weight and improving aerodynamics while adding a sporty touch.

超轻锻造铝5辐轮毂有鳍状塑料整流罩镇压空气湍流，减轻重量，提高空气动力学同时增加了运动感。

In the third chapter of this dissertation, based on the physical and chemical properties of hydrogen and the combustion characteristics of hydrogen, the quasi-dimension combustion calculation model of hydrogen-fueled engine is set up through analyzing the characteristics of turbulence flame and chemical reaction kinetic of hydrogen-air mixture.

但是，对氢燃料发动机燃烧模型的研究尚处于空白。

It's always been the fate of the proletariat to overthrow the capital and property holders. While revolution might create turbulence in society, it is only through revolution that resources will be redistributed, that the old system of society will be struck down, that further development can be obtained. Armed revolutions of the past have always taken place because society had no democratic system, as well as the corresponding imbalance in distribution of society's resources. Despite the government's current effort to develop democracy, one can still see the results have not been great. From government officials down to flat-headed common folk, everyone's working hard to get a piece of the pie. Who cares about democracy?

从来都是无产者革资产者的命，革命本身会造成社会的动荡，但唯有彻底的革命资源才能重新分配，才能打破旧的制度社会才能得到进一步发展，历来的武装革命都是因为社会没有民主制度以及相应的社会资源分配不均衡所导致的唯一的也是必然的选择，然而如今虽然政府也在大力发展民主政治，但可以看到收效不大，从政府官员到平头百姓都在为眼前利益奔忙，谁管什么民主，民主离我们太远了！

The measured flow velocities by means of PDA in the XFD-12 flotation cell were used to calculate turbulence energy spectrum of mixing region, flotation region and froth region.

经论文中试验、测定和计算己查明：在药剂条件适'fl{的条件下，浮选槽中矿浆紊流状态是影响泡沫征化不良的胜要原因。

The circular centrifugal flotation cell has many originalities on the pulp aeration, air bubble mineralization, air pulp flow format in the ring shaped tank of the cell, feed method ect, due to the results of fluidics and turbulence and the action of centrifugal and gravitational force ect.

新型高效圆形离心浮选机充分发挥了湍流射流及离心—重力力场的作用，使其在矿浆充气、气泡矿化、浮选槽内矿浆流动形式、给料方式等方面独具特色。在普通喷动床环形区底部引入&充气&可消除环形区底部颗粒&死区&的影响，并能改善环形区气固间的热、质传递。

The circular centrifugal flotation cell has many originalities on the pulp aeration, air bubble mineralization, air pulp flow format in the ring shaped tank of the cell, feed method ect, due to the results of fluidics and turbulence and the action of centrifugal and gravitational force ect.

新型高效圆形离心浮选机充分发挥了湍流射流及离心—重力力场的作用，使其在矿浆充气、气泡矿化、浮选槽内矿浆流动形式、给料方式等方面独具特色。

Furthermore, using standard k-ε double equation turbulence model, it simulates the three-dimensional water movement of the circular and pier shaped cylinder measuring flumes, and makes researches on the discharge coefficient of the cylinder measuring flumes in the larger range.

用标准κ-ε双方程紊流模型，数值模拟圆柱形和桥墩形量水槽三维水流运动，在更大的范围内研究圆柱形和桥墩形量水槽流量系数的变化规律。

The effects of the gap between the driver cab and the freight body of the heavyduty truck on its aerodynamic characteristics were simulated by means of a simplified truck model ground transportation system using the RNG kε turbulence model and hybrid mesh technique.

以简化的大型载货汽车模型GTS为研究对象，采用RNG k-ε湍流模型和混合网格技术，分别模拟了气流流过驾驶室与货厢之间不同长度的间隙时产生的流场形态。

Chrysanthemum of 10 thousand birthday is lax to edaphic requirement, with the arenaceous qualitative loam with fecund, good drainage had better.

万寿菊对土壤要求不严，以肥沃。排水良好的砂质壤土为好。

He unstepped the mast and furled the sail and tied it.

他拔下桅杆，把帆卷起，系住。