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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
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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
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Sealing effects of cross-linked gelatin
Journal of Biomaterials Applications, 2012Surgical sealants form gel when applied to tissues. Currently, fibrin sealant has been successfully used in many surgical fields, but it has several disadvantages, including possible virus transmission, low adhesive strength, and high cost. In this study, gelatin and glutaraldehyde (GA) solutions were chosen to demonstrate the effectiveness of cross ...
S, Suzuki, Y, Ikada
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Effect of Foreign Matters on Sealing Characteristics of Oil Seals
SAE Technical Paper Series, 1977<div class="htmlview paragraph">Fine solid particles in a lubricating oil affect the sealing characteristics of oil seals, and their lives are shortened by the wear of oil seals and shafts created by the particles.</div> <div class="htmlview paragraph">Tests were carried out by using various kinds of foreign matters.
Hiroshi Hirabayashi +2 more
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Effect of surface roughness of mechanical seals under blood sealing
Lubrication Science, 2010AbstractA miniature mechanical seal with cooling water circulating system has been developed as a shaft seal for rotary blood pumps. The present paper describes the establishment of the experimental methods under blood sealing and the estimation of the effect of the surface roughness on the shaft seal problems, especially in the increase of the ...
Jun Tomioka, Norifumi Miyanaga
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Journal of Lubrication Technology, 1969
The laminar and turbulent flow of an incompressible fluid between the rotating parallel surfaces of a face seal is investigated analytically to determine the influence of conduction, convection, and dissipation on the temperature distribution. A method of estimating the general temperature level within the seal is suggested.
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The laminar and turbulent flow of an incompressible fluid between the rotating parallel surfaces of a face seal is investigated analytically to determine the influence of conduction, convection, and dissipation on the temperature distribution. A method of estimating the general temperature level within the seal is suggested.
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The wettability of sealing materials and its effect on sealing performance: Part I
Sealing Technology, 2016Wetting influences the sealing mechanisms of rotary shaft lip seals and rod seals. This article, published in two parts, shows how to determine the surface free energy of sealing materials, especially elastomers. Wetting parameters and their influence on sealing operation are explained, and a hypothesis is proposed to connect wetting phenomena with ...
Peter Schuler, Werner Haas
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Honeycomb seal technology achieves superior sealing effect in centrifugal air compressor – Part I
Sealing Technology, 2018Through the use of a detailed case study, this article explains why honeycomb seals, which are used mainly in the aerospace industry, have the potential to be successfully applied to rotating turbine machinery used in the industrial sector. The authors analyse the way in which seals in a centrifugal air compressor in use at a coal chemicals enterprise
Lihao Zhang +3 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
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Seal Size - Its Effects on Radial Lip-Type Oil Seal Design
SAE Technical Paper Series, 1978<div class="htmlview paragraph">A fractional factorial experimental study was conducted to determine the effect of seal size on seal design. The seven factors studied were inside lip diameter (w/o spring), seal size, shaft-to-bore offset, spring position, contact width, flex section thickness, and material modulus.
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