Present paper deals with numerical simulation of flow in simplified model of the axial turbine stage equipped with the hub-seal. Main subject of simulations is study of various geometrical modifications of the outlet-slot from the hub-seal. The purpose of these modifications is to suppress a negative effect of complex secondary structures on the stage efficiency. Secondary flow structures are formed as a result of interaction of main stream above the outlet-slot with the leakage-stream from the hub-seal. It was found that suitable shape of the outlet-slot can bring up to six tenth of percent in efficiency.
Skip Nav Destination
Research Article| November 22 2019
Numerical simulation of hub-seal leakage flow interaction with the rotor blades
AIP Conf. Proc. 2189, 020021 (2019)
Petr Straka; Numerical simulation of hub-seal leakage flow interaction with the rotor blades. AIP Conf. Proc. 22 November 2019; 2189 (1): 020021. https://doi.org/10.1063/1.5138633
Download citation file: