The relationship between the fluctuating drag and lift pressures in the turbulent area within a flow duct is given.
在管道通风系统中的湍流区内，震荡波动的阻力气压与推力气压之间的关系已被阐述。
The SPRD will automatically open as the air pressure in the duct system increases, in order to prevent the reduction of air flow and excessive noise and velocity through the duct system.
当管道系统空气压力增加时，SPRD会自动开启，以防止管道系统中空气流动的减少和过度噪音和速度。
Through hydrodynamic similitude experiments, coefficients hindering flow of the gel in duct is calculated.
通过相似模拟的方法研究了新型胶体在管道中流动的阻力系数。
Besides, it can also give understanding of the surface streamlines, vortices in separation region and the corner effect of duct flow.
而且液晶也反映了表面流线，分离区内的涡流和管道流动的角效应。
In the steady flow in manifolds, there exist a number of stable flow states in the branches for the same main duct flow rate.
在稳定的多分支管道流动中，对于相同的主管道流量，各分支管道中可以有不同的稳定流动状况与之对应。
The results suggest that the effects of buoyancy force, variable physical properties of the fluid, and duct geometric characteristic on flow and heat transfer can be very significant.
研究表明，流体剧烈变化的热物性、浮升力以及三角管的几何特征对管内流动换热的影响非常明显。
Experiments were carried out to investigate the sonic velocity of air-powder two-phase flow in a horizontal constant cross section duct.
实验研究了在水平等截面管道中空气-树脂粉两相流的音速。
The numerical simulation for the three dimensional turbulent flow field of multiply jets mixing with a confined crossflow in cylindrical duct is presented in this paper.
对多股射流与圆柱管中的横流湍流混合的三维流场进行了数值模拟。
The calculation of streaming currents induced by turbulent duct flow in a power transformer is studied.
对紊流态下变压器油道内冲流电流的计算进行了研究。
This paper deals with the test plant and test results of a gas generator of a by-pass dual-rotor engine with variable duct flow path resistance.
途述了带外函道的双转子发动机内、外函分流，各自通流阻力可以改变的燃气发生器试验装置和试验结果。
Then the normal Reynolds stresses in square duct flow are calculated using the new model and coefficient functions, the results are consistent with the experimental data.
最后用方截面管流中有关二次流的实验结果对模型进行鉴定。 结果表明，给出的模型在槽道流动和方截面管流中都获得了满意的结果。
In this paper effect of air temperature, air flow rate, air duct size and distance between air ducts on the performance of mixed flow grain dryer were analyzed and discussed.
分析和讨论了空气温度、流速、风道中的风道尺寸对混流谷物干燥机的影响。
This paper presents the results of the analysis and numerical solution of the three-dimensional turbulent incompressible flow in an S-shaped rectangular duct.
本文给出了矩形截面的s形弯曲管道中气流的三元紊流数学分析和对不可压缩情况进行的数字解结果。研究中将三元粘性紊流看作半抛物线形式。
Air flow measurement of utility boilers is often liken by using venturi duct, latticed wing, multiple pilot tube and double venturi tube.
电站锅炉的通风量，主要用风道型文丘里、机翼、笛型管及双文丘里进行测量。
The heat transfer and characteristics of the fluid flow in the duct of the trailing edge of the turbine blade with parted pin-fin arrays were experimentally investigated.
本文对具有断裂结构扰流柱的涡轮叶片尾缘楔型通道的流动与换热过程进行了实验研究。
A cyclone flow generates in the blower duct (20) by the first air inflow hole (31) and the suction force of the blower box.
利用该第一空气流入孔(31)和上述吸气箱的吸引力，在吸气管道(20)内产生旋流。
Simplified analysis on a single fiber fin in the duct flow demonstrates that the heat transfer can be enhanced with the increasing length-to-diameter ratio and thermal conductivity ratio.
对单根纤毛肋进行的简化理论分析表明纤毛长径比和肋材与流体的导热系数比越大其强化换热作用越好。
The three-dimensional simulation model of the spiral inlet duct of a diesel engine is created with the FIRE software, and CFD simulation of inlet flow is carried out.
利用FIRE软件建立了某柴油机螺旋进气道的三维仿真模型，对进气流动进行了CFD模拟计算。
The numerical simulation for a three-dimensional curved duct flow was carried out by means of the large eddy simulation (LES).
本文应用湍流大涡模拟方法对三维空间的弯管流进行了数值模拟。
The accuracy of the simulation model is verified by inlet duct steady flowing pressure tests on test benches, and then flow field distribution in inlet ducts is analyzed.
在用气道稳流试验台验证了仿真模型的准确性后，分析了进气道内部的流场分布。
Under the circumstances with external duct, gas axially goes into and flows steady, the flow difference under the two circumstances is greater.
而在有外风筒情况下，气体从轴向进入且流动平稳，两种情况流动差别较大。
One of effective measures to weaken short-out flow is to set up an eccentric gas exhaust duct.
指出设置偏心内筒是减小短路流的有效措施之一。
The calculation of streaming currents induced by turbulent duct flow in a power transformer is studied.
对成品油管道内油品流动所产生的冲流电流的计算进行了研究。
When the sending and exhausting shaft is ventilated, short duct flow may occurred between outlet and inlet, which will baffle air exchange in highway tunnel.
在竖井送排式通风时，排风口和送风口之间可能产生短道流动，这种短道流动会阻碍隧道内的空气交换。
Viscous flow around a duct propeller under open water condition was simulated by solving RANS equations, and the characteristic of the flow field was described.
采用求解RANS方程的方法对某导管桨敞水流场进行数值模拟，并对导管桨流场特点进行分析。
Meanwhile, a group of experimental data of additional noise pressure level and fluid pressure loss generated by flow in a duct is presented to explain the readability of us...
由于声激波降噪需要附加一段具有高速流动的缩放管道，它会附加流动噪声和压力损失，本文提供了这方面的一组实验数据，以说明应用声激波消声器的现实可能性。
The flow through a rotating U bend duct is investigated by means of visualization.
采用流场显示的方法研究了旋转U型通道内的流场。
The correctness of using periodic unit duct model to simulate the shell-side flow and heat transfer is confirmed for the first time, when using the corrugated tube.
本文首次验证了纵流壳程换热器选用波纹管作为换热元件采用单元流道模型对壳程进行数值模拟的正确性，同时验证了数值模拟结果的正确性。
Using the streamline curvature method and the full radial equilibrium equations, the duct flow calculations of an axial_flow fan are presented in this paper.
采用流线曲率法，计算完全径向平衡方程，求出轴流通风机轴向间隙的气流分布。
The flow control characteristics and the effects of inner duct exit dimension on overall engine performances were presented by the program.
预测了巡航条件下发动机节流特性、内涵喷口几何面积对发动机性能影响，结果与其它有效数据相吻合。
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