| Citation: | SUN Jiachen, SUN Dan, ZHANG Jieyi, et al. Influences of the installation methods of inner and outer rotor bristles on leakage flow characteristics of rotating brush seal[J]. Journal of Aerospace Power, 2026, 41（5）：20250186 doi: 10.13224/j.cnki.jasp.20250186
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The theoretical formula of deformation characteristics of bristle in rotating brush seals under centrifugal force was derived. Solution models for mechanical deformation characteristics of bristle under centrifugal effects in rotating brush seal and for leakage flow characteristics in three-dimensional staggered tube bundles were established successively. Based on the verification of solution model accuracy through theoretical formulas and experimental results, the mechanical deformation characteristics of rotating brush seal were analyzed for different brush diameters and installation angles at varying rotational speeds, while the effects of the inner and outer rotor installation methods on leakage flow characteristics in rotating brush seal were studied. The results showed that centrifugal effect in rotating bristles intensified with rotational speed under both inner and outer rotor installation methods. Increasing bristle diameter and reducing bristle installation angle could reduce the centrifugal deformation in bristles. Under the inner rotor bristles installation method, sealing leakage decreased with reduced bristle diameter and bristle installation angle. When the inner rotor bristles speed was
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