Results 11 to 20 of about 72,478 (206)
Sealing Performance of a Turbine Rim Chute Seal Under Rotationally-Induced Ingestion
Journal of Physics: Conference Series, 2021 Abstract This study focuses on the sealing capability of a turbine rim seal subject to hot gas ingestion driven purely by the rotor disc pumping effect rather than that induced by mainstream features such as vane and rotor blade passing. The aim is to provide useful data for conditions in which rotation dominates, and to clarify the flow
Revert, AB +3 more
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Energies, 2020 The appropriate coolant mass flow of turbine blade rim seal has become an important issue as turbine blades are exposed to increasingly higher thermal load owing to increased turbine inlet temperature.
Seok Min Choi +2 more
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Energies, 2023 In gas turbines, the hot gas exiting the combustor can have temperatures as high as 2000 °C, and some of this hot gas enter into the space between the stator and rotor disks (wheelspace).
Sabina Nketia +4 more
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Numerical study of turbine rim seals performance with different sealing structures
Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería, 2022 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
T. Bai, Q. Yang, J. Liu, Y. Shi, S. Qiao
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Energies, 2019 The rim seal of the gas turbine is intended to protect the material of the turbine disk from hot combustion gases. The study of the rim seal structure is important to minimise the coolant flow and maximise the sealing effect. In this paper, a wave-shaped
Seungjin Lee +2 more
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Novel high-pressure turbine purge control features for increased stage efficiency
Journal of the Global Power and Propulsion Society, 2017 Rim seals throttle flow and have shown to impact the aerodynamic performance of gas turbines. The results of an experimental investigation of a rim seal exit geometry variation and its impact on the high-pressure turbine flow field are presented.
Rainer Schädler +5 more
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Flow and Ingestion in a Turbine Disc Cavity under Rotationally-Dominated Conditions
International Journal of Turbomachinery, Propulsion and Power, 2021 An investigation of hot gas ingestion driven by the disc pumping effect in a chute seal was conducted at the Oxford Rotor Facility. Measurements of mean pressure, unsteady pressure and gas concentration have been logged and analysed under different ...
Anna Bru Revert +2 more
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Flow mechanisms in axial turbine rim sealing [PDF]
Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, 2018 This paper presents a review of research on turbine rim sealing with emphasis placed on the underlying flow physics and modelling capability. Rim seal flows play a crucial role in controlling engine disc temperatures but represent a loss from the main engine power cycle and are associated with spoiling losses in the turbine.
John W Chew, Feng Gao, Donato M Palermo
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Investigations of the leakage characteristic and the sealing effectiveness on turbine bite rim seals
Journal of Thermal Science and Technology, 2018 In order to meet the needs of designing for high performance secondary air system in the turbine, a new turbine bite engineering rim seal of type-A and the related test rig were designed and set up.
Weilin DONG, Suofang WANG, Pengfei LI
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Numerical Investigation of Unsteady Interaction between Rim Seal Flow and Upstream Vane
Xibei Gongye Daxue Xuebao, 2019 To investigate unsteady interaction mechanism between the rim seal flow in turbine stator-rotor cavity and main flow, detailed unsteady numerical simulations of the flow field and unsteady characteristic of the vane were conducted under different rim ...
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