The experimental results showed that the removal efficiency increased with increasing Reynolds number of jet exit and flow ration of jet-crossflow.
研究结果表明,增大射流出口雷诺数和增大射流与主气流的气速比均能提高可吸入颗粒的清除效率。
The results show that effect of wall curvature on turbulence is distinct, and enhances with increase of S/W, Reynolds number based on jet exit width.
结果表明,曲率对壁面射流的影响较强,并随着S/W的增大而增强。 随着雷诺数的增大,壁面曲率的影响也有强化的趋势。
The variations of the local scour equilibrium depth with the parameters of the jet, such as jet exit height, width, velocity and sediments characteristics, were observed in the experiments.
实验观测了射流局部达到冲刷平衡时,最大冲刷深度随射流喷口高度、喷口宽度、喷口流速、横流流速及泥沙特性变化的规律。
At the region near the nozzle exit, a vibrating flow phenomenon is found, which is associated with the expansion waves and shock waves reflections inside the gas jet.
发现了在接近喷嘴出口的区域里,出现了与射流内的激波、膨胀波有关的振荡流。
Exit flue gas temperature, flue gas quantity and length of flue gas jet could be control conveniently according to requirement of the boiler start up process.
用到循环流化床锅炉启动,可以任意调整出口烟气温度、出口烟气射流长度。
The optimum jet distance for jet pressure pulsation was about 7-14 times of nozzle exit diameter.
实验还表明,自激振荡脉冲喷嘴射流存在最优喷距,最优喷距的大小为喷嘴出口直径的7~14倍。
Theresult proved, abrasive water jet metal-cutting don't exit heat effect.
试验结果表明,磨料水射流切割无热影响区。
The impinging jet injection device improves combustion efficiency. If the fuel streams impinge with the airstreams directly at the exit of air-inlet, it makes negative effect on combustion efficiency.
燃气射流与空气流在进气道出口直接撞击不利于燃烧效率的提高。
Sountherly lower level jet of exit region on the south side of upper level jet enhances the inflow intensity of storm which provide the plenty of vapor for the convective systems.
高空急流出口区南侧的偏南风低空急流加强了风暴的入流强度,为风暴提供了有利的风场环境和水汽条件。
The pressure difference on the wall between actuator and the exit of primary jet is great.
主流通道内侧压力差主要产生在激励器与主流出口之间的上下壁面上。
Also, the small shock waves exit in the jet under the practical operation conditions because it is hard for the jet to perfectively work in the design conditions.
在实际的操作环境下,很难做到完全满足喷孔的设计条件,产生了微弱的斜激波。
In the model the exit area ratio, solid particle mass ratio, fuel enthalpy of combustion, jet gas molecular weight, chamber stagnation temperature, flight Math number etc. have been considered.
在该模型中考虑了底排出口面积比,排气固相颗粒质量比,燃料热值,燃气分子量,燃烧室总温,飞行马赫数等因素。
Abstract : Acoustic radiation from a supersonic underexpanded jet with a designed exit Mach number 1.95 is investigated using large eddy simulation (LES).
摘要 :针对马赫数为1.95的欠膨胀超声速喷流声辐射特性,采用高精度计算格式的大涡模拟(LES)方法进行数值研究。
Abstract : Acoustic radiation from a supersonic underexpanded jet with a designed exit Mach number 1.95 is investigated using large eddy simulation (LES).
摘要 :针对马赫数为1.95的欠膨胀超声速喷流声辐射特性,采用高精度计算格式的大涡模拟(LES)方法进行数值研究。
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