Aerodynamic Performance of Double-Sided Labyrinth Seals
A test rig for double-sided labyrinth seals, which simulated the rim seal of a gas turbine rotor disk, was set up and aerodynamic performances of two different configurations (straight and stepped) were tested. Influences of pressure ratio and various combinations of tip clearances of the two sides on the seal performance were investigated. In addition to the overall seal performance, leakage behaviors of the individual seals (upstream and downstream) were separately analyzed and compared. The leakage reduction effect of step decreases with decreasing clearance. If the difference in the clearances of the two sides is sufficiently large, the smaller clearance side fully dominates the overall seal leakage behavior. Predictions by an analytic model and CFD were also carried out, and CFD gives better agreements with the test n general.
labyrinth seals test straight stepped clearance pressure ratio
Tong Seop Kim Yungmo Kang Hee Koo Moon
Dept. of Mechanical Engineering, Inha University 253 Yonghyun-Dong, Nam-Gu, Incheon 402-751, Korea Solar Turbines Inc. 9330 Sky Park Court, San Diego, CA 92123 Solar Turbines Inc. 2200 Pacific Highway, San Diego, CA 92101
国际会议
The Fourth International Symposium on Fluid Machinery and Fluid Engineering(第四届流体机械与流体工程国际会议)
北京
英文
377-382
2008-11-25（万方平台首次上网日期，不代表论文的发表时间）