Two-dimensional ( 2D) unsteady numerical simulation has been applied to study the effect of the variation in relative circumferential positions of rotors on the performance of a low speed compressor. 采用二维非定常数值模拟的方法研究了动叶相对位置的改变对低速压气机气动性能的影响。
To overcome the shortage of hard synchronization of the test pieces circumferential speed with the linear movement of measuring probe in the traditional gear pitch relative measurement, this paper introduces a new method based on PC and high-speed data acquisition system. 为解决传统齿轮齿距相对测量方法中存在的测量头直线进给和齿轮旋转速度同步困难的缺陷,提出一种基于微机和高速数据采集系统的齿轮齿距测量方法。
According to the figures of minimum circumferential slip velocity with the rotating speed and supply pressure in experiment, the critical shear stresses of sleeve surface and axis surface are obtained for high viscosity lubricant and low viscosity lubricant. 根据实验测得的周向最小滑移速度与转速和供油压力关系曲面,计算出高粘度和低粘度润滑介质时轴瓦和轴表面的极限剪应力,并发现滑移速度随着供油压力的提高而提高。
Finally, based on the field test of the erector, the performance parameters of erector and maximum impact load under different stretching speed, startup acceleration and circumferential rotation speed of the lifting cylinder have been measured. 最后进行了管片拼装机现场测试,测试出拼装机的性能参数,提升油缸不同伸缩速度、启动加速度、周向旋转速度下最大载荷值。