Ha, Yunseok Ha, Taewoong Byun, Jaeseung Lee, Yongbok 2024-01-19T16:31:57Z 2024-01-19T16:31:57Z 2021-09-02 2020-10 0301-679X https://pubs.kist.re.kr/handle/201004/118030 This study investigated the effect of clearance between a rotor and hybrid brush seal for leakage flow in terms of the axial deflection and wear. The leakage flow was experimentally measured according to pressure difference, and the Darcian porous medium-based CFD model was used to predict leakage flow according to clearance and rotational speed. The bristle's axial deflection was estimated according to the external force, the brush seal compliance was derived based on the cantilever beam theory, and the bristle wear and oxidation under super-heated steam and high-speed operation environments were studied. The accuracy of the CFD model that considered the clearance change was improved by 11% compared to that of the previous CFD model. English ELSEVIER SCI LTD FLOW-FIELDS GEOMETRY MODEL Leakage effects due to bristle deflection and wear in hybrid brush seal of high-pressure steam turbine Article 10.1016/j.triboint.2020.106325 1 TRIBOLOGY INTERNATIONAL, v.150 TRIBOLOGY INTERNATIONAL 150 scie scopus 000539161200001 2-s2.0-85083462629 Engineering, Mechanical Engineering Article FLOW-FIELDS GEOMETRY MODEL Hybrid brush seal Leakage Bristle wear Axial-deflection