Leakage flow reduction in different configuration of labyrinth seal on a turbine blade tip
2018; IOP Publishing; Volume: 1101; Linguagem: Inglês
10.1088/1742-6596/1101/1/012012
ISSN1742-6596
AutoresPiotr Kaczyński, Ryszard Szwaba, Filip Wasilczuk, Paweł Flaszyński, Piotr Doerffer,
Tópico(s)Heat Transfer Mechanisms
ResumoThis paper contains experimental and numerical investigation of the leakage flow over the blade tip in turbine stage. Experiments were conducted in non-rotating linear channel. Test rig was intended to model the geometry of the labyrinth seal of the blades of the lower pressure turbine stage. Investigated model contained two different geometries of labyrinth fins. Moreover smooth and honeycomb stator landing were tested. Experimental measurements have been supported by CFD simulation which gives valuable information of flow structure in labyrinth seal and show complex flow physics in the investigated model.
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