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Effect of Inflow Swirl on the Sealing Effectiveness of Turbine Rim Seal
Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, 2023Abstract Turbine inlet swirl condition is inherently present at the combustion chamber outlet and has an important influence on mainstream flow and gas ingestion. The sealing effectiveness and ingestion mechanism were numerically investigated using Unsteady Reynolds-Averaged Navier-Stokes (URANS) equations coupled with a fully developed ...
Qingfeng Cong +4 more
openaire +2 more sources
A Novel Design of Rim Sealing Flow for Improving Sealing Effectiveness
Journal of Engineering for Gas Turbines and Power, 2023AbstractRim seal structures and sealing flows are essential in aero engines for preventing hot gas ingestion from mainstream to turbine disk cavities. A novel design method of rim sealing flow path based on auxiliary sealing holes and sealing air re-distributions has been proved to improve sealing effectiveness. The present paper uses this method to re-
Du Qiang +4 more
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Effects of Geometry on Sealing Effectiveness of a Rim Seal
Volume 5C: Heat Transfer, 2014A parametric study has been performed to find the effects of geometric parameters on sealing effectiveness of a rim seal, which is used to prevent the hot gas ingestion into the gas turbine component and to cool the turbine disk. The flow and temperature fields in the reference rim seal which was tested by Popović and Hodson have been investigated ...
Mi-Ae Moon +3 more
openaire +2 more sources
Effects of Sealing Flow Supply Configuration with Holes on Sealing Effectiveness of Turbine Rim Seal
Journal of Thermal Science, 2022Zepeng Gai +4 more
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Effects of Purge Jet Momentum on Sealing Effectiveness
Journal of Engineering for Gas Turbines and Power, 2016Driven by the need for higher cycle efficiencies, overall pressure ratios for gas turbine engines continue to be pushed higher thereby resulting in increasing gas temperatures. Secondary air, bled from the compressor, is used to cool turbine components and seal the cavities between stages from the hot main gas path. This paper compares a range of purge
Kenneth Clark +6 more
openaire +2 more sources
On the Use of PSP to Determine the Rim Sealing Effectiveness
Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, 2023The control of cavities sealing has been a challenging problem since early gas turbine development stages and several aspects regarding the flow physics and the modelling of rim seal flows, especially in terms of unsteady phenomena, still represent an ...
L. Orsini +4 more
semanticscholar +1 more source
Volume 7B: Heat Transfer — General Interest/Additive Manufacturing Impacts on Heat Transfer; Internal Air Systems; Internal Cooling, 2023
The rim seals of gas turbines are used to control the ingestion of hot mainstream gas into the wheel space between the rotor disk and the stationary casing.
L. Orsini +4 more
semanticscholar +1 more source
The rim seals of gas turbines are used to control the ingestion of hot mainstream gas into the wheel space between the rotor disk and the stationary casing.
L. Orsini +4 more
semanticscholar +1 more source
Volume 5B: Heat Transfer — General Interest; Internal Air Systems; Internal Cooling, 2021
The cavity region between the rotor and stator relies on hardware seals and purge flow to discourage hot gas path air from being ingested into the unprotected wheel space. However, ingestion can occur due to a combination of disk pumping, periodic vane-
Shawn Siroka +5 more
semanticscholar +1 more source
The cavity region between the rotor and stator relies on hardware seals and purge flow to discourage hot gas path air from being ingested into the unprotected wheel space. However, ingestion can occur due to a combination of disk pumping, periodic vane-
Shawn Siroka +5 more
semanticscholar +1 more source