Numerical simulations of the flow and temperature fields were carried out at different tooth positions in compressor stator well sealing. The sealing characteristics

swirl characteristics and windage heating characteristics of a labyrinth sealing with different tooth positions were studied. Influences of relative different positions of single

double and triple teeth on the discharge coefficient

outlet swirl ratio and windage heating were studied. The results show that the discharge coefficient is minimum

outlet swirl ratio and windage heating are maximum when the single tooth is placed at downstream position. Under the double teeth condition

when one is at upstream position and the other at downstream position

the discharge coefficient is minimum. Under the triple teeth condition

when upstream

downstream and middle positions are separately provided with a tooth

the discharge coefficient is minimum. With the decrease of discharge coefficient

the outlet swirl ratio and windage temperature increase.