Analysis of the hot gas ingress into the wheel space of an axial turbine stage

Jannik Borgelt (), Thomas Hösgen (), Matthias Meinke and Wolfgang Schröder
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Jannik Borgelt: RWTH Aachen University, Institute of Aerodynamics
Thomas Hösgen: RWTH Aachen University, Institute of Aerodynamics
Matthias Meinke: RWTH Aachen University, Institute of Aerodynamics
Wolfgang Schröder: RWTH Aachen University, Institute of Aerodynamics

A chapter in High Performance Computing in Science and Engineering '21, 2023, pp 207-221 from Springer

Abstract: Abstract The thermal efficiency of gas turbines strongly depends on the turbine inlet temperature. Increasing the inlet gas temperature improves the engine performance, but results in new challenges for the cooling of the turbine material. To avoid hot gas ingress from the main annulus flow into the wheel space between the stator and the rotor disks, which can lead to machine failure, cooling air from the turbine’s secondary air system is used to seal the rim seal gap and to cool the wheel space. To increase the thermodynamic efficiency of the turbine, it is necessary to minimize the cooling mass flow rate.

Date: 2023
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Persistent link: https://EconPapers.repec.org/RePEc:spr:sprchp:978-3-031-17937-2_12

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DOI: 10.1007/978-3-031-17937-2_12

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