喷流

The air motion in umbrella curtain spray combustion system for diesel engine was studied using numerical analysis with the emphasis on the evolution of in-cylinder flow field, the interactions between swirl and squish and the effects of combustion chamber configuration.

用数值分析方法研究柴油机伞帘喷雾燃烧系统中的空气运动规律，探讨了缸内流场的演变过程、涡流与挤流的相互作用和燃烧室结构的影响，并比较了该燃烧系统与原机燃烧系统中的流场。

A large range of IRZ and intense fluctuating velocity area around the boundary of IRZ is measured and thought to be important to keep the excellent ignition and combustion characters of the new kind swirl burner. Together with temperature trace method, different structure and operation parameter of the burner are studied in this paper about their effects on turbulent and mixing characters of swirling jet. The structure variation includes different blade angle, use of central gear shape baffle, variable outer length and angle of lean primary air outlet, use of wedge outlet of lean primary air.

采用上述两种测量方法并结合热质比拟温度示踪的方法，本文对径向浓淡旋流煤粉燃烧器喷口结构和气流流动参数的变化对旋流流场的流动、混合、湍流脉动特性的影响进行了深入研究，研究了旋流叶片倾角大小、中心齿型扩锥、淡一次风扩口外伸长度和扩角的变化、淡一次风楔形扩口、直流二次风扩口角度的变化对出口旋转射流流动特性的影响，研究了一次风率和旋流二次风率运行参数变化的影响规律。

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。

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。

The ratio of length and diameter of capillary,the concentration of the spinning solution and the surface tension of spinneret, on the shape and die swell of the extruded thread of acetate fiber.

本文研究了喷丝速度、喷丝孔的长径比、纺丝液浓度和表面张力以及喷丝板表面性质对醋酸纤维素丙酮浓溶液细流流型的影响。

The results show that the gas flow is represented as laminar flow in flat nozzle contour and turbulent flow in scraggling nozzle contour; The development of turbulent flow is good for the control effect of super-sound velocity gas flow and the dielectric strength recovery properties.

光滑喷口壁面吹弧气体的流动表现为层流；凸凹不平的喷口壁面吹弧气体的流动表现为湍流；对存在有湍流的不同喷口，湍流发展得越充分，越有利于控制超音速流的发展，从而有利于提高介质强度恢复速度。

Herein, at least one of said separating means (2-5, 6-9) comprises a multiport cyclone into which the material flow to be treated is passed via an infeed nozzle (2, 6) having an annular cross section.

其中至少一个上述分离装置(2～5；6～9)包括多入口旋流器，使待处理的物料流径横截面为环形的进入喷口(2，6)进入该旋流器。

According to the existent problem of the running water film deduster which included the more pressure drop and the efficiency of low removal dust,the method was discussed by applying venturi and rotating-stream-tray and spraying and demister to reconstruct the old deduster.

针对文丘里水膜除尘器运行中存在的压降过大和除尘效率过低等问题，采用文丘里+旋流板+喷淋+折流除雾器的方法对原有除尘器进行改造。改造工程应用表明，该方案的阻力和除尘效率在理论上的分析与实际应用相一致，在文丘里喉管气速 40m/s，液气比 0 。5L/m3 ，喷淋液气比为 1.5L/m3 时，除尘效率达到 95 %以

The effects of the diameter of spout nozzle, the height of draft tube above distributor plate, spouting gas velocity and fluidizing gas velocity on solids circulation have been investigated.

实验中系统研究了导向管安装高度、喷动口直径、床层物料高度和流化气量对最小喷动速度的影响，并在此基础上得到最小喷动速度的关联式。

Research dephosphorizing speed, load of molten iron, oxygen gun site, nitrogen gun site, the flow of oxygen, the flow of nitrogen , nitrogen traffic flow on the pool of the impact, combined with industrial testing, Baosteel Stainless Steel Branch for the actual production process, that the best package of hot metal injection dephosphorization process parameters, Guiding operation at the scene.

摘 要：通过铁水包喷吹脱磷工艺水模拟实验，对不同工艺条件下熔池混匀时间及液面喷溅进行实测，研究了脱磷剂加入速度、铁水装入量、氧枪枪位、喷粉枪枪位、氧气流量、氮气流量对熔池流场的影响规律，并结合工业试验，针对宝钢不锈钢分公司的实际生产工艺，得出了最佳的铁水包喷吹脱磷工艺参数范围，指导现场操作。

In the United States, chronic alcoholism and hepatitis C are the most common ones.

在美国，慢性酒精中毒，肝炎是最常见的。

If you have any questions, you can contact me anytime.

如果有任何问题，你可以随时联系我。