Also, this paper suggests the curves of the real and imaginary parts of the first three order dimensionless complex frequencies varying with dimensionless flow speed in the case of different dimensionless delay time s and mass ratio and obtain the range of dimensionless speed of the occurrence of divergence instability and coupled-mode flutter of the cylinde.
采用微分求积法，推导了轴向流动中简支Kelvin模型粘弹性圆柱体的特征方程，给出了在不同无量纲延滞时间和质量比下前三阶无量纲复频率的实部和虚部随无量纲流动速度变化的曲线图，并得到了在不同无量纲延滞时间下，圆柱体发生发散失稳及耦合模态颤振的无量纲速度的范围。
In order to satisfy the real-time control of air/fuel ratio, this model was simplified based on two supposals as follows:(1) the intake air mass flow rate has a linear form with the product of the two established expressions, the throttle angle expression and the intake air pressure expres...
为满足基于模型进行空燃比实时控制的要求，基于以下两个假设对模型进行了简化：(1)假设进气流量与模型所建立的关于节气门开度和进气压力的表达式的乘积成线性关系；(2)充量系数和进气压力的乘积与进气压力成线性关系。
The riser total pressure drop and apparent solids holdup increase with the solids-to-air mass flow ratio, and there is greater effect of solids-to-air mass flow ratio on apparent solids holdups in lower part of riser.
此外，床层总压降和截面平均颗粒浓度随固气质量比的增加而增加，在上升管下部截面平均颗粒浓度受固气质量比的影响比上部大。
The influences of conveying pressure drop, the gas volume flow rate and conveying pressure on the solid-gas ratio and the solid mass flow rate were investigated.
分别在不同的输送差压、风量和压力等条件下进行了输送试验，考察操作参数对煤粉质量流量和固气比等气力输送特征参数的影响。
The influences of fluidizing gas flow rate, pressure, pressurizing gas flow rate and total conveying pressure drop on the solid-gas ratio and the solid mass flow rate were investigated.
分别在不同的输送差压、充压风量和流化风量等条件下进行了输送试验，考察操作参数对煤粉质量流量和固气比等气力输送特征参数的影响。
Different kerosene mass flows were achieved with variable mass flow Venturi during 2.5 seconds of stable combustion of pure kerosene in a scramjet combustor ignited by a special torch igniter. Along with the decrease of kerosene mass flow, corresponding fuel equivalence ratio are 1.01, 0.88, and 0.71, the thrust and wall static pressure of combustor decreased, shock train in isolator moved to downstream.
在模型发动机2.5s工作时间内，利用流量调节系统实现了煤油流量阶梯变化，对应当量比分别为1.01，0.88和0.71，随着燃料流量减小，超燃冲压模型发动机维持稳定燃烧，发动机推力减小，燃烧室压力降低，隔离段内预燃激波串位置后移。
The droplet size has important impact on the air temperature, humidity and the state of the water film, the quantity of the nozzle and the compressed air are determined by the spray angle and the droplet distribution, acquired the initial structures parameters of the nozzle through theoretical calculation, and make use of the CFD to analysis the influence of the ratio between the mass flow rate of the compressed air and the spray water, the nozzle exit diameter on the performance of the nozzle, when the nozzle exit diameter d= 0.6mm, the compressed air mass flow rate of the optimum ratio is 8 m3/h, and its atomization is best, the spray angle is 100°.
旋转喷雾布水冷却时，液滴粒径的大小决定换热器表面水膜状态和飘逸损失量和换热器外侧空气温湿度，喷嘴雾化角及液滴分布决定喷嘴数量和压缩空气量，本文在理论计算基础上初步确定喷嘴结构尺寸，利用fluent软件详细分析了喷嘴出口孔径、气水比对喷嘴性能的影响，研究发现：喷嘴出口孔径为0.6mm，最佳气水比对应的压缩空气量为8m3/h，液滴粒径60μm，雾化角为100°。
The distribution of the mass flow rate, the heat transfer coefficients and the film effectiveness of cylindrical holes was measured. The influence of mainstream Reynolds number, blowing ratio and the position of holes on flow rate, the heat transfer coefficients and the film effectiveness was studied greatly.
测量了气膜孔的流量系数、气膜孔下游换热系数和冷却效率的分布，重点研究了主流雷诺数、二次流吹风比以及孔排位置对气膜孔的流量系数、气膜孔下游的换热系数和冷却效率的影响。
The test results show that the performance of ISD will improve with the increase of air temperature, mass flow of air and initial moisture content of wood particles and the decrease of air humidity and mass flow rates ratio.
研究结果表明，随着气流温度的升高、气流湿度的下降、气流流量的增加、刨花初含水率的提高及载带率的减小，刨花对撞流干燥的强度也随着提高。
The test results show that the performance of ISD will improve with the increase of air temperature, mass flow of air and initial moisture content of wood particles and the decrease of air humidity and initial moisture content of wood particles and the decrease of air humidity and mass flow rates ratio.
研究结果表明，随着气流温度的升高、气流温度的下降、气流流量的增加、刨花初含水率的提高及载带率的减小，刨花对撞流干燥的强度也随着提高。
First, experimental study on the influence of air temperature, velocity, initial moisture content of wood particles and mass flow rates ratio in the process of ISD has been performed.
首先，在不同气流温度、温度、流量及不同刨花初含水率、载带率条件下进行刨花对撞流干燥实验。
In this article, the following three researches are accomplished to discover the drying characteristics, influence on the quality of wood particles and kinetic rules of ISD: First, experimental study on the influence of air temperature, velocity, initial moisture content of wood particles and mass flow rates ratio on the process of ISD has been performed.
在本文中，为了探求刨花对撞流干燥的干燥特性、对刨花品质的影响及其动力学规律，进行了以下三个方面的研究：首先，在不同气流温度、湿度、流量及不同刨花初含水率、载带率条件下进行刨花对撞流干燥实验。
By analyzing the volume mass-transfer coefficient, the optimal operating flow-ratio and packed density were obtained.
通过考察体积传质系数，确定了纤维液膜萃取分离器的最佳填充密度和最佳流量比。
Compared with the general single-tube model, this paper takes the horizontal bundle absorber as the research object, analyses the principal of dual-solution two-phase flow heat and mass transfer in absorber, introduces the wetting ratio to describe the incomplete wetting performance and view it as the changeable parameter to explain it's influence to total performance of absorber and cooling capability of evaporator.
与以往广泛采用的单管模型相比，本文采用了实际中应用较多的水平管束式吸收器作为研究的对象，对吸收器内二元溶液两相流动传热传质机理做了深入细致的分析，引入了润湿率 WR 这一参数来衡量实际运行中出现的管壁的不完全润湿特性，并将其作为可变参数分析它对吸收器总体性能以及蒸发器制冷能力的影响。
An effervescent nozzle and a multistage nozzle were investigated as well. Comparisons between the nozzles showed that the newly developed ZNtype nozzle has the largest fuel output with the same orifice diameter, and the highest droplet fineness with the same air-to-fuel mass flow ratio.
与现有的气泡雾化喷嘴、低压多级雾化喷嘴相比，该喷嘴在相同的气浆比下具有较高的雾化细度，在相同出口尺寸的条件下具有较大的燃料流量。
The flow rate and the mixing ratio of the two gases is controlled through the use of HiTec closed-loop mass flow controllers.
流速和两气体混合比例是通过使用控制下的国际展贸中心的闭环质量流量控制器。
When the volume ratio of n-butanol in the feed was 60% and the content of ethanol was equal to hexanol, feed flow rate was 1.8 mL/min, distribution ratio was 1∶2, reflux ratio was 5∶1, the result was the best, the mass fraction of ethanol could reach more than 96% in the overhead product, the mass fraction of n-butyl alcohol could reach more than 98% in the side-draw product, and the bottom of column had no ethanol. Compared with the conventional two distillation column process, DWC required less energy, the energy consumption of condenser and reboiler could be reduced by more than 27.2% and 23.9% respectively.
结果表明，当进料中正丁醇体积分数为60%、乙醇和正己醇的体积分数相当，进料速度1.8 mL/min，分配比1∶2，回流比5∶1时，DWC的分离效果最佳，塔顶采出乙醇的质量分数在96%以上，侧线采出正丁醇的质量分数在98%以上，塔釜中无乙醇；DWC与常规二塔流程相比具有明显的节能效果，冷凝器和再沸器的热负荷分别降低27.2%和23.9%以上。
The effects of the mass ratio of alkali-to-ore, the mass ratio of KNO3-to-ore, oxygen partial pressure, gas flow rate and reaction temperature on the decomposition of chromite ore were experimentally studied to determine the chromite decomposition parameters by KOH-KNO3 binary sub-molten salt.
实验考察了碱矿比、盐矿比、氧分压、气体流量以及反应温度等工艺参数对铬铁矿分解过程的影响，以明确KOH-KNO3二元亚熔盐分解铬铁矿的分解条件。
German AG company, with the help of erosive abrasion tester, tested the wear abrasion rate on different abrasion-resistant materials through different erosion angles, velocities and mass flow impact testing samples in different mixing ratio and compared all the abrasion data for analysis.
德国AG公司使用冲蚀磨损试验装置，以不同的冲蚀角、不同的冲蚀速度和不同混合比的料流冲击试验样，测试了不同耐磨材料的磨损率；并对磨损数值进行了分析比较。
The influences of key design and operating parameters, such as bypass air ratio, compressor speed and total air mass flow rate etc., on the performance of heat pump microwave drier were investigated.
分析了空气旁通率、压缩机转速及空气质量流量等主要设计及运行参数对干燥性能的影响。