Results 271 to 280 of about 8,509 (316)

Aerodynamics of swept and leaned transonic compressor-rotors

Applied Energy, 2007
Abstract A systematic investigation to understand the impact of axially swept and tangentially leaned blades on the aerodynamic behaviour of transonic axial-flow compressor rotors was undertaken. Effects of axial and tangential blade curvature were analyzed separately.
BENINI, ERNESTO, BIOLLO, ROBERTO
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Time Transformation Simulation of 1.5 Stage Transonic Compressor

Volume 2C: Turbomachinery, 2015
The accurate prediction of the aerodynamic and aeromechanical performance in a modern transonic compressor often exceeds the capability of traditional steady state mixing plane simulation methods. Time accurate transient blade row simulation approaches are required when there is a close coupling of the flow between the blade rows, and for fundamentally
Laith Zori, Paul Galpin, Rubens Campregher, Juan Carlos Morales   +3 more
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Tip-Vortices in Transonic Axial-Compressors

2002
A great potential regarding powerfull loss reduction in transonic axial flow compressors is located at the blades’ tip. In this region losses are intensified by tip-vortices standing above the suction sides of the blades. Each vortex propagates through the blade duct in question and must cross the passage shock which is caused by the flow deflection on
Willy Hofmann, Josef Ballmann
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Aerodynamics of a Transonic Centrifugal Compressor Impeller

Volume 5: Turbo Expo 2002, Parts A and B, 2002
High pressure ratio centrifugal compressors are applied to turbochargers and turboshaft engines because of their small dimensions, high efficiency and wide operating range. Such a high pressure ratio centrifugal compressor has a transonic inlet condition accompanied with a shock wave in the inducer portion.
Seiichi Ibaraki, Tetsuya Matsuo, Hiroshi Kuma, Kunio Sumida, Toru Suita   +4 more
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Multiple tone generation by transonic compressors

Journal of Sound and Vibration, 1971
Abstract An axial flow compressor operating at relative tip speeds in excess of the speed of sound generates a multiple tone acoustic field. A theory is presented which explains this tone field in terms of the production and propagation of the shock waves associated with the supersonic elements of the blading.
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Flow in Multistage Transonic Compressors

2019
The project has been funded by the Engineering and Physical Sciences Research Council (EPSRC) and Siemens Industrial Turbomachinery Ltd.
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Aeroelastic Investigation of a Transonic Research Compressor

Volume 7B: Structures and Dynamics, 2013
The trend in modern compressor design is towards higher stage loading and less structural damping, resulting in increased flutter risk. The understanding of the underlying aeroelastic effects, especially at highly loaded BLISK rotors, is small. This paper reports on the analysis of flutter phenomena in a modern transonic compressor.
S. Leichtfuß, F. Holzinger, C. Brandstetter, F. Wartzek, H. P. Schiffer   +4 more
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Approach to High-Performance Transonic Compressor Design

Journal of Propulsion and Power, 2004
A single stage transonic centrifugal compressor for a small turbofan engine has been developed. Rig testing has demonstrated an 83.2% adiabatic efficiency with a 7.5:1 total-to-static pressure ratio and a corrected tip speed of 596 m/s. An impeller blade redesign is presented of the original blade geometry, which uses both experimental and numerical ...
M. Oana, O. Kawamoto, H. Ohtani, Y. Yamamoto   +3 more
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Summary of Transonic Compressor Research

2002
Abstract : The information provided in this report is a summary of the research activities completed during the period of July 1974 to January 2002. Complete details on these research activities are provided in the 48 technical reports and 26 journal articles that were generated throughout the effort. A listing of these reports and journal articles are
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TRANSONIC FLOW PROBLEMS IN CENTRIFUGAL COMPRESSORS

SAE Technical Paper Series, 1961
<div class="htmlview paragraph">Some of the flow problems that have been encountered while operating centrifugal compressor impellers with transonic inlet and discharge Mach numbers are described. Qualitative analyses of these problems, modifications used to reduce the adverse effects of transonic flow phenomena, and the comparative results of ...
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