Results 171 to 180 of about 72,478 (206)

Study of the turbine rim seal leakage

Herald of Aeroenginebuilding, 2017
 The 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, 1992
An 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, B. V. Johnson, D. J. Graber, R. J. Martin   +3 more
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Unsteady Computation of Ingress Through Turbine Rim Seals

Volume 5B: Heat Transfer, 2018
In high-pressure turbines, cool air is purged through rim seals at the periphery of wheel-spaces between the stator and rotor discs. The purge suppresses the ingress of hot gas from the annulus but superfluous use is inefficient. In this paper the interaction between the ingress, purge and mainstream flow is studied using unsteady numerical simulations
Joshua T. M. Horwood, Fabian P. Hualca, Mike Wilson, James A. Scobie, Carl M. Sangan, Gary D. Lock   +5 more
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Effect of a rib on rim seal performance

International Communications in Heat and Mass Transfer, 2014
Abstract The effect of a rib installed in a rim seal on sealing effectiveness was investigated using three-dimensional Reynolds-averaged Navier–Stokes analysis. A parametric study was performed for a single square rib installed on the surface on the rotor side.
Mi-Ae Moon, Chung-Suk Lee, Kwang-Yong Kim   +2 more
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Large-Eddy Simulation of Turbine Rim Seal Flow

Volume 2A: Turbomachinery, 2018
The flow field in a complete one-stage axial-flow turbine with 30 stator and 62 rotor blades is investigated by large-eddy simulation (LES). To solve the compressible Navier-Stokes equations, a massively parallelized finite-volume flow solver based on an efficient Cartesian cut-cell/level-set approach, which ensures a strict conservation of mass ...
Alexej Pogorelov, Matthias Meinke, Wolfgang Schröder   +2 more
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Numerical Characterization of Hot-Gas Ingestion Through Turbine Rim Seals

Journal of Engineering for Gas Turbines and Power, 2016
This paper deals with a numerical study aimed at the characterization of hot-gas ingestion through turbine rim seals. The numerical campaign focused on an experimental facility which models ingress through the rim seal into the upstream wheel-space of an axial-turbine stage. Single-clearance arrangements were considered in the form of axial- and radial-
Riccardo Da Soghe, Cosimo Bianchini, Carl M. Sangan, James A. Scobie, Gary D. Lock   +4 more
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Using a Tracer Gas to Quantify Sealing Effectiveness for Engine Realistic Rim Seals

Volume 5A: Heat Transfer, 2016
As overall pressure ratios increase in gas turbine engines, both the main gas path and cooling temperatures increase leading to component durability concerns. At the same time effective use of the secondary air for both cooling and sealing becomes increasingly important in terms of engine efficiency.
Kenneth Clark, Michael Barringer, Karen Thole, Carey Clum, Paul Hiester, Curtis Memory, Christopher Robak   +6 more
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Unsteady Interaction Between Annulus and Turbine Rim Seal Flows

Volume 8: Turbomachinery, Parts A, B, and C, 2012
In core gas turbines relatively cold air is purged through the hub gap between stator and rotor in order to seal the disc space against flow ingestion from the main annulus. Although the sealing mass flow rate is commonly very small compared to the main annulus mass flow rate, it can have significant effects on the development of the passage endwall ...
Martin Chilla, Howard Hodson, David Newman   +2 more
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Effects of Sealing Flow Supply Configuration with Holes on Sealing Effectiveness of Turbine Rim Seal

Journal of Thermal Science, 2022
Zepeng Gai, Pengfei Zhu, Jianping Hu, Zhenxia Liu, Hang Yin   +4 more
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Rim seal arrangement

Sealing Technology, 2020
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