模拟旋转内冷通道中压力测量的实验研究

AN INVESTIGATION OF MEASUREMENT OF FLOW PRESSURE IN ROTATING TUBES

关键词:  旋转流体  气动特性  压力测量

Key words:  Rotating fluid  Aerodynamic characteristic  Pressure measurement

摘要:

在旋转内冷通道中，用压力传感器测量垂直于旋转轴的矩形管道中流动气体的压力分布，实验结果表明：（１）在同一半径处，转速增加引起压差减少，（２）在转速较低时（如４００ｒ／ｍｉｎ或６００ｒ／ｍｉｎ）随着半径增大，压差减小，但转速较大时（如１０００ｒ／ｍｉｎ），总的压差反而随着半径增大而增大，（３）流体管道中的扰流柱起着增加气流紊流的作用，导致压力损失增大，压降增大。

Abstract:

A thorough investigation into the fundamentals from the most basic law of motion was conducted to give the relation between the concerned terms in the stationary system and the totation systemThe measuring system includes:pressure taps;a pressure sensor;a slipping ring ;a data acquisition systemAn exploratory experiment has been made to perform the measuring technique on a rotation frame which is designed to obtain heat transfer behaviour in turbine blade hollow,and the result shows the data are excellently reasonable and completely satisfiedThe increase of the RPM causes the decrease of the pressureThe configuration of tube with pin fire is to produce increase in the turbinlent and pressure drop