| Citation: | ZHAO Huan, JIANG Jinyu, SUN Dan, et al. Numerical study on static and dynamic characteristics of an integral floating ring seal with shallow groove dynamic pressure[J]. Journal of Aerospace Power, 2024, 39（9）：20220697 doi: 10.13224/j.cnki.jasp.20220697
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A multi-frequency elliptic vortex solution model for static and dynamic characteristics of the monolithic floating ring seal with shallow groove dynamic pressure was established. On the basis of verifying the accuracy of the numerical calculation method, the static and dynamic characteristics of the integral floating ring seal with no groove, rectangular groove, spiral groove and T-groove were analyzed. The changes of leakage, buoyancy and dynamic characteristics of the integral floating ring seal under different structures and working condition parameters were studied. The influence of groove type on the stability of the integral floating ring seal rotor was analyzed, and the influence mechanism of dynamic pressure groove type on the dynamic characteristics of the integral floating ring seal was revealed. The results showed that the leakage and the lift force increased with the increase of eccentricity. Compared with the non-slotted floating ring seal, the rectangular groove had the largest leakage, and the T-shaped groove had the largest buoyancy, which was 434.7% of that without groove. Under the same vortex frequency, the effective damping of the rectangular groove was maximum and positive, and the tangential flow force was opposite to the rotor vortex direction, which can restrain the rotor vortex and improve the rotor stability.
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