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Transient modelling and simulation of gas turbine secondary air system [PDF]
Applied Thermal Engineering, 2020 Abstract The behaviour of the jet engine during transient operation and specifically its secondary air system (SAS) is the point of this work. This paper presents a methodological approach to develop a fast, one-dimensional transient platform for preliminary analysis of the flow behaviour in gas turbine engines secondary air system. For this purpose,
Nikolaidis, Theoklis +2 more
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Results in EngineeringThe optimization of combustion processes in large-scale power generation systems is crucial for improving energy efficiency and reducing carbon dioxide (CO2) emissions.This study focuses on enhancing the combustion state in a 1000MW double tangential ...
Tianlong Wang +4 more
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Design optimization of a vane type pre-swirl nozzle
Engineering Applications of Computational Fluid Mechanics, 2021 Pre-swirl system is installed to minimize energy loss between the stationary and rotating parts of turbine secondary air system. Although various optimization studies were conducted to increase the pre-swirl efficiency, most of the studies were focused ...
Jungsoo Lee +5 more
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Energies, 2021 A hybrid cooling system which combines natural ventilation with a radiant cooling system for a hot and humid climate was studied. Indirect evaporative cooling was used to produce chilled water at temperatures slightly higher than the dew point. With this
Pradeep Shakya +5 more
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Flow characteristics in turbine wheel space cavity
Energy Reports, 2021 Unsteady flow structures unrelated to rotating frequency in the turbine wheel space cavity has been observed and reported in a number of recent rim sealing investigations.
Lei Xie +4 more
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Ozone pollution around a coastal region of South China Sea: interaction between marine and continental air [PDF]
Atmospheric Chemistry and Physics, 2018 Marine atmosphere is usually considered to be a clean environment, but this study indicates that the near-coast waters of the South China Sea (SCS) suffer from even worse air quality than coastal cities.
H. Wang +13 more
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Self-Powered Fine Dust Filtration Using Triboelectrification-Induced Electric Field
Nanoscale Research Letters, 2022 Particulate matter (PM) in the environment can adversely affect the health of living things. However, high removal efficiency and low-pressure loss are crucial design challenges for any air filtration system.
Young-Jun Kim +4 more
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Numerical Investigation on Windback Seals Used in Aero Engines
Aerospace, 2018 Seals are considered one of the most important flow elements in turbomachinery applications. The most traditional and widely known seal is the labyrinth seal but in recent years other types like the brush or carbon seals were introduced since they ...
Michael Flouros +3 more
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Simulation of the Secondary Air System of Aero Engines [PDF]
Volume 1: Turbomachinery, 1992 This paper describes a computer program for the simulation of secondary air systems. Typical flow system elements are presented, such as restrictors, tappings, seals, vortices, and coverplates. Two-phase flow as occuring in bearing chamber vent systems is briefly discussed.
K. J. Kutz, T. M. Speer
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Influence of gas outburst dynamic flow on mine ventilation system
AIP Advances, 2021 This study was conducted to analyze the influence of outburst power from coal and gas on mine ventilation systems in order to avoid damage from secondary disasters to mine ventilation systems.
Jingxiao Yu, Zongxiang Li, Wenqing Wang
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