Results 1 to 10 of about 2,859,954 (336)
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
semanticscholar +6 more sources
Engineering Applications of Computational Fluid MechanicsSecondary-air systems (SASs) are critical for maintaining material integrity and optimizing thermal performance in gas turbines (GTs) and related energy equipment.
Yulong Yao +3 more
doaj +2 more sources
Gas-turbine engine secondary air system analysis
Izvestiya MGTU MAMI, 2015 Secondary air system model based on graph theory and one dimentional hydraulic models is discussed. Channel inclination to major axis of integration is taking into account. New hydraulic channel model for smooth transition between “horizontal” and “vertical” flow passages is proposed.
G. G. Yurchenko
openaire +2 more sources
An Integrated Approach to Simulate Gas Turbine Secondary Air System
Volume 7C: Heat Transfer, 2020 Abstract One of the most critical parts of a modern gas turbine that its reliability and performance has a great influence on cycle efficiency is the secondary air system (SAS). Modern systems functions to supply not only cooling air flow for turbine blades and vanes but sealing flow for bearing chambers and turbine segments as well as ...
Mahmoud Chizari +3 more
openaire +2 more sources
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
openaire +2 more sources
Finite element transient modelling for whole engine-secondary air system thermomechanical analysis
Energy Procedia, 2017 Abstract This paper presents a new procedure developed in cooperation with Ansaldo Energia and aimed to predict metal temperatures in a gas turbine whole engine with an axisymmetric transient finite element approach. The 2D model includes a dedicated thermal fluid network where mass flow rates and pressure distributions are provided by external fluid
Giuntini, Sabrina +3 more
openaire +4 more sources
Absolute calibration of the LOPES antenna system [PDF]
, 2005 Radio emission in extensive air showers arises from an interaction with the geomagnetic field and is subject of theoretical studies. This radio emission has advantages for the detection of high energy cosmic rays compared to secondary particle or ...
Apel, W. D. +10 more
core +15 more sources
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
doaj +1 more source
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
doaj +1 more source
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
doaj +1 more source