查询词典 jet flow

According to requirements of design and development, not only should RJM system lead to large jet distance to actuate transverse flow of fluid in tanks, but also provide better diffusion effect.

在RJM系统的设计开发过程中，工业上对该系统的要求是不仅要射程远，能够使储罐流体横向有运动，而且要求四周的扩散效果要更好。

The experimental setup for the turbulent jets in crossflow is designed, and the hot wire anemometry IFA 300 is used to measure the velocity field and the turbulent kinetic energy, and the computational result matches experimental measurement reasonably well. The experimental result is very important in the analysis of the flow field, deduction of the equation of the jet trajectory, check of the turbulence model and validation of the numerical method.

首先，建立了用于测量横向紊动射流的实验台，并利用IFA 300型热膜风速仪系统测量了多种工况下的流场，并将速度、湍动能结果与数值计算结果进行了比较，实验结果与数值模拟结果吻合较好，从而为分析流场特性、确定射流轨迹、比较湍流模型以及验证数值计算方法提供了依据。

Based on the study of gas solid flow field in blowpipe of BF with oygen enriched PCI, the oxygen and coal concentration distribution inside the blowpipe were simulated and discussed, including the influence of position and inserting angle of the oxygen coal lance, the pattern of the oxygen enriched jet, as well as grain size of the coal.

在对高炉局部富氧喷煤直吹管内气固两相流流场研究的基础上，对直吹管内氧和煤粉的浓度场进行了数值研究，包括氧-煤喷枪的插入角度和枪位、局部富氧射流的漩流数以及煤粉粒度的影响。

The rotational jet and local oxygen enrichment can improve the mixing of oxygen and pulverized coal, but the effect of coal injection is weak on the whole flow field in blowpipe. The mass and momentum transfer near the exit of lance are very strong.

结果表明，氧-煤喷枪的漩流、富氧率等仅在氧枪出口的有限区域内对流场有较大的影响；喷煤对整个直吹管内的流场影响较小，但在氧-煤喷枪出口附近区域会促使气相和煤粉激烈混合，动量和质量传输较强烈。

In the study of flow oscillation and discrete frequency noise of impinging jet, it is found that there is a critical pressure ratio for a given nozzle and a nozzle-to-plate distance.

发现对于给定的喷嘴和冲击距离，存在一个压比临界点，当压比高于此临界点值时，流场振荡和离散频率噪声被显著抑制乃至消失。

Through the cold-state and simulation result, the special flow field of the burner can be obtained. It would be adjusting well when primary air nozzle adopting this form of inner-straight and outer-swirling. Inner straight can assure enough distance of jet, outer-swirling can entrain enough high temperature flue gas to burst into flame easily.

从冷态试验和数值模拟两方面可以得出这种燃烧器具有特殊的流场分布，一次风喷口采用这种外旋流内直流形式，兼有直流和旋流的两种特性，且具有很好的调节作用。

Secondly, the more complex inner and outer flow field is simulated around axisymmetric body with pump-jet (including no tip-clearance flow) with stator and rotor, and the numerical results are approved reasonable and inerratic by the contrast of the thrust and torque of rotor and stator to the experiment under the unself-propelled and self-propelled conditions.

紧接着，分析了推进器在非自航状态和自航状态下的性能、导管内部轴向、径向和周向速度场、压力场在相互作用中的具体形态和结构，并定性地分析了它们对水动力噪声、空泡生成以及振动的影响，为减少这些不利影响明确了解决的办法，为泵喷推进器的工程设计提供了切实可行的理论分析方法和技术思想，对工程实际具有重要的指导作用。

The paper presents that high pressure water jet comminuting technology was used for coal slurry pulverization,and then the comminuted slurry will be graded in a hydrocyclone,the fineness particles obtained from the over flow will be floated,and the coarseness particles from the under flow will be comminuted again.

介绍了采用高压水射流粉碎煤泥的技术，粉碎后的煤泥颗粒经水力旋流器进行分级，对溢流口得到的颗粒进行浮选，对底流口得到的颗粒再次粉碎。

By means of analysis of the influence of barrel inner surface on firing process and firing precision,3 kinds of exact manufacture method were proposed,they are compulsive spiral flow method,high pressure water jet ringed flow method and magnetorhelogical fluid method.

通过分析身管内表面对射击过程的影响后，提出了3种精密加工的方法，分别是强制螺旋流法、高压水射环流法、磁流变液法。

The MUSCL method of Godunov schemes is developed to simulate the complex flow fields of two-dimensional (2-D) and three-dimensional (3-D) flow field of rocket jet impingement in this paper.

本文首次采用Godunov类数值格式中的MUSCL方法对二维、三维复杂火箭导弹燃气射流冲击流场进行了比较全面系统的理论研究和数值仿真。

Cynanchum Lingtai apricot production in the average weight 65 grams, the brightly-colored fruit, juicy rich, sweet-sour taste, sweet from the nucleolus, when the late Qing Dynasty famous Shaanxi, Gansu provinces, the Qing imperial court Tongzhi tribute for years.

灵台生产的牛心杏平均单果重65克，果实色泽鲜艳，汁多味浓，甜酸适口，离核仁甜，清末时就驰名陕、甘两省，清同治年间曾为朝廷贡品。

Chenopodium album,Solanum nigrum, and Amaranthus retroflexus were very susceptible to the herbicides. Polygonum persicaria and Abutilon theophrasti were relatively less susceptible to the herbicides, and Lycopersicon esculentum was not susceptible to it. The relationship between reduction rates of weed biomass and PPM values of weed leaves 2,4, and 6 days after treatment was established.

供试的6种杂草对该混剂的敏感性存在显著差异：红心藜Chenopodium album、龙葵Solanum nigrum和反枝苋Amaranthus retroflexus对该混剂最敏感，ED90值分别为47.65、71.67和29.17g/hm2；春蓼Polygonum persicaria和苘麻Abutilon theophrasti敏感，ED90值分别为96.91、114.20g/hm2；而番茄不敏感。