Tao Bai1,2, Qingzhen Yang1, Jian Liu3, YongQiang Shi1, shengjun qiao2
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, Vol.38, No.3, pp. 1-16, 2022, DOI:10.23967/j.rimni.2022.09.003
- 15 September 2022
Abstract The unsteady large-scale vortex near the turbine rim has an important influence on the sealing performance. Characteristics and performance of four sealing structures are researched in this paper. Three-dimensional unsteady numerical simulation was adopted to deeply reveal the characteristics of the rim sealing vortex and its influence mechanism on the rim sealing performance. The results show that the rim seal vortex structure induced by the interaction between ingested gas and sealing flow in the gap is the leading cause of unsteady flow in the rim. The vortex size is suppressed with the increasing seal flow… More >
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