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Egress Interaction Through Turbine Rim Seals
Volume 5B: Heat Transfer, 2017Engine designers require accurate predictions of ingestion (or ingress) principally caused by circumferential pressure asymmetry in the mainstream annulus. Cooling air systems provide purge flow designed to limit metal temperatures and protect vulnerable components from the hot gases which would otherwise be entrained into disc cavities through ...
James A. Scobie +3 more
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Performance Evaluation of Various Rim-Seal Geometries
Journal of Thermophysics and Heat Transfer, 2015A numerical investigation has been performed to evaluate the performance of various rim seals in a gas turbine. Two performance functions of the rim seal related to sealing effectiveness and the loss coefficient of the main flow were analyzed for two rim-seal inlet velocities and three leakage fractions using three-dimensional Reynolds-averaged Navier ...
Mi-Ae Moon +2 more
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Volume 2B: Turbomachinery, 2016
The hot gas in mainstream can ingest into the stator-rotor wheel space through the working clearance between the rotating and stationary parts of a turbo machine. To avoid ingestion, a certain amount of compressor air is injected into the cavity. On one hand, it can lead to a significant loss of engine efficiency, so the injected air coming from the ...
Lixiang Wang, Hongwei Ma, Jinghui Zhang
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The hot gas in mainstream can ingest into the stator-rotor wheel space through the working clearance between the rotating and stationary parts of a turbo machine. To avoid ingestion, a certain amount of compressor air is injected into the cavity. On one hand, it can lead to a significant loss of engine efficiency, so the injected air coming from the ...
Lixiang Wang, Hongwei Ma, Jinghui Zhang
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Volume 3: Heat Transfer, Parts A and B, 2006
Turbine rim seal ingestion in gas turbines is influenced by many geometric and flow parameters. For turbine stages where the vanes and blades are closely spaced, the time-dependent pressure and flow fields near the seal strongly influence the rim seal ingestion.
Cheng-Zhang Wang +5 more
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Turbine rim seal ingestion in gas turbines is influenced by many geometric and flow parameters. For turbine stages where the vanes and blades are closely spaced, the time-dependent pressure and flow fields near the seal strongly influence the rim seal ingestion.
Cheng-Zhang Wang +5 more
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Aerothermal Analysis of a Turbine With Rim Seal Cavity
Volume 5A: Heat Transfer, 2014This study presents the results of the aerothermal analysis of an axial turbine with rim seal cavity using conjugate heat transfer computation (CHT). The CHT computations were performed for a two-stage turbine with stator well cavity at the sealing flow rates between 0–2% of the main annulus flow utilizing the commercial solver ANSYS CFX.
Huoxing Liu, Yuge An, Zhengping Zou
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Study of the turbine rim seal leakage
2017The article discusses the turbine rim seal and the processes occurring in it. The basic mechanisms of the hot gas inflow into the internal cavity are described. Features of the rim seal calculate in CFD software are shown. The algorithm of the rim seal calculating in unsteady calculation is created. Transient calculation of the total cavity model with
Tisarev, A.Yu., Vasilevich, N.M.
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Rim Seal Experiments and Analysis for Turbine Applications
Journal of Turbomachinery, 1992An experimental investigation was conducted to determine the sealing effectiveness and the aerodynamic characteristics of four rim seal models for a number of flow conditions. The experiments were conducted to obtain an extended data base for advanced turbine rim seal design. The class of rim seals investigated are those found on the downstream side of
W. A. Daniels +3 more
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Characterization of turbine rim seal flow and its sealing effectiveness
2013In a gas turbine engine, ingestion of hot gas from the flowpath into the gaps between the turbine rotor and stator can lead to elevated metal temperatures and a deterioration of component life. To prevent ingestion, bleed air from the compressor is used to "purge" the rim seal cavities.
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Effect of Geometry and Fin Overlap on Sealing Performance of Rim Seals
38th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit, 2002Kenji Teramachi +3 more
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