Results 81 to 90 of about 10,932 (224)
Flow and Heat Transfer in Rotating Compressor Cavities With Inverted Shroud-Throughflow Temperature Differences [PDF]
Journal of TurbomachineryAbstract In an aero-engine compressor, co-rotating discs form cavities that interact with an axial throughflow of secondary air at low radius. In the high-pressure (HP) compressor the shroud is hotter than the throughflow (directed downstream to the turbine) and the radial temperature gradient creates buoyancy-induced flow at Grashof ...
Pernak, Mikolaj J. +5 more
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Energy efficient engine high pressure turbine ceramic shroud support technology report [PDF]
This work represents the development and fabrication of ceramic HPT (high pressure turbine) shrouds for the Energy Efficient Engine (E3). Details are presented covering the work performed on the ceramic shroud development task of the NASA/GE Energy ...
Carlson, R. G., Nelson, W. A.
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International Journal of Turbomachinery, Propulsion and PowerThe German Aerospace Center designed, aero-mechanically optimized and experimentally investigated its own counter-rotating shrouded fan stage in the frame of the project CRISPmulti. Their target and the motivation of this work was, on the one hand, the generation of a highly accurate experimental database for the validation of the modern numerical ...
Lengyel-Kampmann, Timea +3 more
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Active clearance control system for a turbomachine [PDF]
, 1982 An axial compressor is provided with a cooling air manifold surrounding a portion of the shroud, and means for bleeding air from the compressor to the manifold for selectively flowing it in a modulating manner axially along the outer side of the stator ...
Coulson, C. E. +2 more
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NASA Low-Speed Centrifugal Compressor for Fundamental Research [PDF]
A centrifugal compressor facility being built by the NASA Lewis Research Center is described; its purpose is to obtain benchmark experimental data for internal flow code verification and modeling.
Adam, P. W., Buggele, A. E., Wood, J. R.
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Composite seal for turbomachinery [PDF]
, 1979 A gas path seal suitable for use with a turbine engine or compressor is provided. A shroud wearable or abradable by the abrasion of the rotor blades of the turbine or compressor protects the rotor blades. A compliant backing surrounds the shroud.
Bill, R. C., Ludwig, L. P.
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FREQUENCIES AND MODES OF ROTATING FLEXIBLE SHROUDED BLADED DISCS-SHAFT ASSEMBLIES
TASK Quarterly, 2003 It is now increasingly necessary to predict accurately, at the design stage and without excessive computing costs, the dynamic behaviour of rotating parts of turbomachines, so that resonant conditions at operating speeds are avoided. In this study, global rotating mode shapes of flexible shrouded bladed disc-shaft assemblies are calculated.
JACEK SOKOŁOWSKI +2 more
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Computation of incompressible viscous flows through turbopump components [PDF]
Flow through pump components, such as an inducer and an impeller, is efficiently simulated by solving the incompressible Navier-Stokes equations. The solution method is based on the pseudocompressibility approach and uses an implicit-upwind differencing ...
Chang, Leon, Kiris, Cetin
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Measurements for the rotordynamic shroud forces for centrifugal pumps [PDF]
, 1990 An experiment was designed to measure the rotordynamic shroud forces on a centrigual pump impeller. The measurements were doen for various whirl/impeller ratios and for different flow rates.
Acosta, A. J. +3 more
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Авіаційно-космічна техніка та технологіяIn order to improve the maintainability of aircraft engine parts, the article examined the use of additive technologies in repairs. The article establishes that the use of additive technologies by the method of plasma surfacing in the repair of aircraft ...
Konstantin Balushok, Sergey Chigileychik
doaj +1 more source