Experiment of the influence of outlet velocity on comfort in multi-point jet zone 风速对多点射流区域舒适性影响的实验研究
Based on the hydraulic model test of an oblique inlet passage, the hydraulic loss coefficient and distribution of the outlet velocity of the inlet passage are obtained in the paper. 由斜式进水流道模型水力特性试验得到了进水流道的水力损失和出口流场的分布,分析了进水流道出口流场对水泵及其装置性能的影响。
That the effect of air outlet velocity on the temperature field is significant and the vertical temperature gradient is large, but the horizontal temperature difference is small. 出口风速对温度场的分布有很大影响,垂直平面温度梯度较大,水平平面温度分布均匀。
By analyzing the inlet and outlet velocity triangles of the twin impellers in detail under design and off-design point, the paper gives a matching condition and formulas for working out the two triangles. 通过对设计工况与非设计工况下前置叶轮与后置叶轮的进出口速度三角形的分析,提出了求解速度三角形的耦合条件,给出了求解公式。
For utility's pulverized coal fired boilers, to equilibrate the outputs of all burners and rationally dispose the pulverized coal concentration and outlet velocity of burners 'are the vital conditions and guarantee for the safe and economic operation of boilers. 对于电站煤粉锅炉,均衡各燃烧器的出力,合理配置燃烧器喷口的煤粉浓度和出口速度是锅炉安全、经济运行的重要条件和保证。
A novel concept is adopted to design gating system based on the bottom pouring system with stable filling, in which the ingate outlet velocity is as the bottleneck to control the flow velocity of liquid metal in whole gating system. 采用底注式平稳充型的方案来设计浇注系统,把液流在内浇道的出口速度作为限制瓶颈,它控制金属液在整个浇注系统的流动速度。
Experimental Research on the Local Generator and the Outlet Velocity Distribution of Spiral Flow in Circular Pipe 圆管螺旋流局部起旋器与出口段流速分布
Experimental study of the impact of the air-curtain outlet velocity on the temperature distribution for display case 立式开式陈列柜风幕送风速度对其温度分布影响的实验研究
The calculation of the outlet velocity of pressure vessel jet and the nozzle-duct system are led into the gas line pressure test, and the relationship between the test pressure Ps and the pressure drop [ △ P] has been obtained. 把受压容器喷出口的流速计算和喷管&直管体系引入煤气管道的试压过程,得到试验压力Ps与允许压力降[△P]间的关系。
Predictions show that different inlet velocity profiles and subgrid scale models have effects on transient turbulent flow structures and outlet velocity profiles. 数值研究拟不同型式入口速度分布和不同亚网格尺度模型下模型燃烧室二维瞬态紊流流场。
In transitional season, outlet velocity which is 10.2m/s is the best. 在过渡季,应选择10.2m/s的送风速度,将未经处理的室外新风直接送入室内;
The effects that of the outlet angle of guide vane and angle of cone, as well as outlet velocity of guide vanes and liquid concentration of inlet fluid on the separator performance were tested and analyzed, some conclusions were obtained. 试验中重点分析了导叶式气液旋流分离器的叶道出口角度、锥体角度、叶道出口速度以及入口含液浓度对其分离性能的影响规律。
With the mature CFD industrial software FLUENT, the effects of spray nozzle on the high position in the emergency ventilation is numerically simulated. The influences of different nozzle type and outlet velocity on the ventilation effect in the metro accident section are obtained. 运用成熟的CFD商业软件FLUENT,对高位喷嘴在地铁隧道事故通风中的应用效果进行了数值模拟,得出喷口形式、射流风速对事故区间通风效果的影响情况;
Experiment on the influence of frost formation on evaporators on the outlet velocity of the air curtain is carried out. 本文实验研究了陈列柜蒸发器结霜对其风幕送风速度的影响。
Outlet velocity is uniform. 收缩段出口速度均匀;
The result indicates that outlet velocity and outlet diameter have obvious effect on air distribution. 模型试验结果及其分析研究表明,送风速度和送风口直径对工作区空气分布有很明显的影响。
For improving natural ventilation effect, proposes setting an inner glass at a distance of about 0.8 m from the external wall, and simulation results show that air outlet velocity can reach about 2.3 m/ s and heat can be effectively removed from curtain wall. 为该医院病房玻璃幕墙热通道实现自然通风提出了改进措施,模拟得出在距外壁0.8m左右处安装一内层玻璃时出风口气流速度能达到2.3m/s左右,可有效地把热量带出。
Outlet Velocity Influence by Structure of Horizontal Lean-rich PC Burner 水平浓淡结构对燃烧器出口速度的影响
The efficiency distribution along blade span and the inlet and outlet velocity triangle measurement of rotor blades were made around the designing point. 在设计点附近作了沿叶高效率分布及动叶进、出口速度三角形的测定。
An empirical formula of diameter d4 of abrasive waterjet nozzle to pump pressure P and uniform outlet velocity V_4 was established based on the design of structure parameters and performance test. 本文对射流喷头进行了结构参数设计和性能实验,得出了动力泵压力P与磨料水射流出口处均匀速度V4和磨料喷嘴直径d4的经验公式。
Influence of Turbocharger Scroll Case Geometry on Nozzle Outlet Velocity Field 涡轮增压器蜗壳形状对其喷嘴出口速度场的影响
In summer, outlet velocity which is 8m/ s and outlet temperature which is 19 ℃ are the best. 在夏季,应选择8m/s的送风速度和19℃的送风温度;
The different parameter of inlet gas affected outlet velocity differently. 对于不同的气体进口参数,对出口气流速度的影响是不同的。
These factors include outlet temperature 、 outlet velocity and outlet diameter. 这些因素包括送风温度、送风速度、送风口直径、送风方式等。
On this, the fluid field especially the outlet velocity distribution of the equipment is studied under several different inlet boundary conditions. 然后考察了几种不同入口条件下该设备内的流场及入口条件对出口流场均匀性的影响。
At the same condition, polytropic exponent increases, meaning heat loss from the nozzle increases, will lead to outlet velocity and local acoustic velocity decreasing, but Mach number increasing. 相同条件下,多变指数n增大,表明微喷管散热增加,将引起微喷管出口速度和当地声速减小,马赫数则随多变指数增大而增大。
First, the polymeric fluid flow in coat-hanger die was simulated using the three-dimensional finite element method. The outlet velocity and the residence time distribution were analyzed, which could affect the quality of melt blown nonwoven fabric. 本论文首先对熔喷衣架型模头内的聚合物熔体流动进行三维数值模拟,通过分析出口速度和滞留时间的分布特点,指出两者将会显著影响熔喷非织造最终产品的性能。
Using smoke as tracer particles, the flow distributions were obtained under different pressure and flow rate. The measured data of outlet velocity distribution along the axis and the numerical simulation results are in good agreement. 试验采用烟雾作为示踪粒子,获取了不同流量、不同压力下的清晰的微尺度流场,微喷管出口轴线速度分布的试验结果与数值模拟结果较吻合。
Got the optimum vane angle range by comparing the nozzle outlet velocity vectors. 通过对比喷嘴出口速度矢量图,得到各型号喷嘴的最佳叶片摆放角度范围。