Comparisons between Analysis and Experiment for Leakage Flowrate and Stability depending on the Effect of the Height and the Length of Floating Ring Seal

플로팅 링 실의 길이와 높이 효과에 따른 누수 및 안정성에 대한 해석과 실험의 비교

The lock-up position of the floating ring seal affects the leakage flowrate and the stability. And it is changed depending on the operating and geometry condition. In this paper, the leakage flowrate and stability with change of the height and length were investigated by theoretical analysis and experiment. The parameter of the height and length is expressed to the b and L. The decreasing of the b resulted in the increasing of equivalent whirl frequency ratio in the experimental result at the low speed and high pressure not such as theoretical analysis. As the L increased the leakage flowrate decreased and stiffness and direct damping coefficient increased in the experimental result. That was similar to the theoretical analysis.