层板叶片压力面的冷效略高于吸力面。
The cooling effectiveness of pressure side of blade was higher than suction side.
结果表明,叶片前缘压力面侧布置的气膜孔对叶片压力面有很好的冷却效果;
The results show that the cooling effectiveness on concave side is better than suction side with laying film cooling holes in concave side at leading edges of turbine blade.
试验结果表明:质量大的颗粒,在离心泵叶轮中,其轨迹总是趋向叶片压力面。
Experimental results show that the trajectory of particles with large mass will be close to the pressure surface of blade in the centrifugal impeller.
在此基础上,研究了轴流压缩机叶栅内不同直径粒子在叶片压力面和吸力面的沉积规律;
Then the deposition characteristic of different particle diameters in the blade cascade of the axial compressor was obtained.
本发明涉及一种风力发电叶片压力面和吸力面两个半叶片合模用的粘接结构胶及其制备方法。
The present invention relates bonded structural adhesive for two half cane mold clamping of wind-power generating vane pressure surface and suction surface, and a preparing method thereof.
由测量结果可知:在双叶片叶轮内,流体基本沿叶片吸力面流动,叶片压力面上的相对速度较低,在压力面出口出现了速度很低的回流区,有明显“射流-尾迹”特征。
The results indicated that in the two-blade impeller, the fluid mainly flowed along the suction side, the velocity is very small on the pressure side, and a typical jet-wake flow has been observed.
双稳态复合材料能在风力及水流状态变化时迅速改变空气动力形态,帮助去除涡轮叶片上多余的压力。
A bistable composite capable of altering its aerodynamic profile rapidly when wind and current conditions changed would help to remove unwanted stresses in the blades.
流动的路径可以对当地环境压力作出反应并改变,例如叶片不同部分蒸发率不同。
Flows can be rerouted through the network in response to local pressures in the environment, such as different evaporation rates in different parts of a leaf.
这种泵的叶轮叶片可以自动调节来适应转速、流体粘度和不同压力。
This pump impeller blades can be adjusted automatically to adapt to speed, fluid viscosity and pressure.
在泵顶部应该配置排斥叶片,用于排出固体颗粒,减少轴向推力和密封区域的压力。
Repelling vanes shall be provided on the top shroud to expel solids and reduce axial thrust and pressure at the seal area.
一旦固定好后,这使得叶片可承受更少的压力。
基于求得的速度和压力分布,通过积分可求得总推力和转子推力,并在尔后的设计阶段设计转子和定子的叶片。
Based on the distributions of the velocities and pressure the total thrust and the rotor thrust can be obtained by integration and the blades of rotor and stator can be designed.
确定了经济性优化的原则,建立了经济性优化的叶片位置脉谱和增压压力脉谱。
Economy optimizing rule is determined and the map of vane position and boost pressure is obtained.
由计算结果分析了叶轮和无叶扩压器内部的速度、压力、马赫数分布,并和叶片扩压器进行了对比。
The velocity, temperature, pressure, and Mach number are analyzed according to the simulation result and the difference between vane diffuser and vaneless diffuser is studied.
由于各种原因产生的高频和低频的压力脉动会使尾水管内部产生严重的空蚀破坏或者诱发水轮机叶片产生振动等问题。
Pressure fluctuations with high or low frequency can lead to acute cavitation damage in draft tubes or vibration of the vane of turbine.
单作用叶片泵径向不平衡力是影响其工作压力提高的主要问题。
The imbalance of the radial force of the single action vane pump is a main problem which affects the enhancement of the working pressure.
通过对压力面边界层分离条件的分析得出叶片型线方程并给出计算实例。
According to the analysis on the boundary layer separation condition, parameter equation of vane curve for centrifugal pump is established.
本文应用现代谱估计方法——最大熵谱估计分析了双联叶片泵供油系统的压力波动,指出了产生压力波动的原因。
This paper deals with the pressure ripple of the double vane pump using modern spectrum analysis—maximum entropy spectral estimation and indicates the causes of pressure ripple.
研究了施药机具喷雾压力、药液流量和工作风速对几种生防微生物在不同作物叶片上定殖的影响。
The influence of colonization on several crops under different operating pressure and spray volume and wind velocity of biocontrol strains were studied.
由于重力作用在竖直于机组轴线方向上的压力分布不均匀,叶片上作用有交变应力。
The pressure distribution along the vertical direction is asymmetrical and cyclic stress acting on blades is found.
利用电阻应变片、动态压力传感器、滑环式引电器和磁带记录仪等,录取叶片振动应变和动叶出口压力信号,然后回放磁带,做信号处理。
Using resistance strain gage, dynamic pressure sensor, slip ring and tape recorder, the blade vibration strain and exit pressure signals of rotor blades are recorded and then processed.
在校核叶片强度时,由于叶片形状是空间扭曲的,相当不规则,很难分析叶片表面的水压力,所以研究人员通常用把叶片简化成悬臂梁进行分析。
The water pressure is difficult to analyze because of the complex shape the blade takes. So many designers of pump simplify the blade as cantilever girder.
由于叶排间的相互运动,使叶片表面压力和叶栅通道内的流场呈周期性地变化;
Because of relative movement of blade rows, the pressure distributions on the blade and the flow field in the cascade vary periodically.
实验结果还表明:旋转叶片的搅拌功率消耗与过滤时的操作压力的关系不大,但与进料的含固浓度相关。
The experiment expressed: the power consumption of rotary vane mix is not relate to operation press but to the input material concentration.
YB_1—100叶片泵存在噪声高,压力脉动大,性能稳定性差的问题。
The present problems of YB_1-100 vane pump are high noise, large pressure pulse and poor stability.
结果表明:冲角不仅对叶片表面的压力分布,而且对叶片附近的流动状态,特别是在叶栅流道的后半部,有很大的影响。
Results show that incidence affects evidently not only the pressure profile, but also the flows behavior close to the blade profile, especially in the rear part of the cascade passage.
低比转速泵的高扬程决定了叶片流道内逆压梯度比较高,这种压力分布使得水流易于在叶片表面脱流分离,这一现象甚至在泵的设计点也难以避免。
The high head produced by the impeller means high adverse pressure gradient within blade passage and because of this the flow often separates from the blade surfaces even at the design point.
低比转速泵的高扬程决定了叶片流道内逆压梯度比较高,这种压力分布使得水流易于在叶片表面脱流分离,这一现象甚至在泵的设计点也难以避免。
The high head produced by the impeller means high adverse pressure gradient within blade passage and because of this the flow often separates from the blade surfaces even at the design point.
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