0586213 - ÚT 2025 RIV CZ eng J - Journal Article
Radnic, T. - Šafařík, Pavel - Luxa, Martin - Šimurda, David
Shock wave configuration in a transonic flow through a mid-section of a last stage turbine blade cascade equipped with a part-span connector.
Acta Polytechnica. Roč. 63, č. 4 (2023), s. 268-272. ISSN 1210-2709. E-ISSN 1805-2363
Institutional support: RVO:61388998
Keywords : transonic flow * blade cascade * part-span connector * numerical simulation * shock wave * steam turbine
OECD category: Applied mechanics
Impact factor: 0.6, year: 2023
Method of publishing: Open access
Result website:
https://ojs.cvut.cz/ojs/index.php/ap/article/view/9064DOI: https://doi.org/10.14311/AP.2023.63.0268

This paper deals with the study of a flow field and namely the configuration of shock waves in a blade cascade equipped with a part-span connector called tie-boss. The cascade consists of prismatic blades formed from the mid-section of a very long last-stage blade of a steam turbine. The study is based on numerical simulations of the flow through a cascade that was previously tested in a wind tunnel. Commercial software Ansys CFX was used for the simulations and Ansys ICEM for the mesh generation. The computational domain contains non-homogenous mesh interfaces. The simulations showed that the presence of the tie-boss has a profound effect on the configuration of the shock waves. The blade exit shock waves are disturbed and new lateral shock waves are introduced into the flow.
Permanent Link: https://hdl.handle.net/11104/0359987