Author: Denver Jackson Jr OsbornePublisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 226
Book Description
Time-resolved Measurements of a Transonic Compressor During Surge and Rotating Stall
Author: Denver Jackson Jr OsbornePublisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 226
Book Description
Time Resolved Measurements of Rotating Stall in Axial Flow Compressors
Author: Philip L. LavrichSurge Dynamics and Unsteady Flow Phenomena in Centrifugal Compressors
Author: Massachusetts Institute of Technology. Gas Turbine LaboratoryPublisher:
ISBN:
Category :
Languages : en
Pages : 263
Book Description
Detailed Time Resolved Measurements and Anaylsis of Unsteady Flow in a Transonic Compressor
Author: Massachusetts Institute of Technology. Gas Turbine & Plasma Dynamics LaboratoryPublisher:
ISBN:
Category : Aerodynamics, Transonic
Languages : en
Pages : 120
Book Description
Time Resolved Measurements in a Low Aspect Ratio Transonic Compressor Stage
Author: A. H. EpsteinAircraft Engines and Gas Turbines, second edition
Author: Jack L. KerrebrockPublisher: MIT Press
ISBN: 0262534037
Category : Technology & Engineering
Languages : en
Pages : 497
Book Description
Aircraft Engines and Gas Turbines is widely used as a text in the United States and abroad, and has also become a standard reference for professionals in the aircraft engine industry. Unique in treating the engine as a complete system at increasing levels of sophistication, it covers all types of modern aircraft engines, including turbojets, turbofans, and turboprops, and also discusses hypersonic propulsion systems of the future. Performance is described in terms of the fluid dynamic and thermodynamic limits on the behavior of the principal components: inlets, compressors, combustors, turbines, and nozzles. Environmental factors such as atmospheric pollution and noise are treated along with performance. This new edition has been substantially revised to include more complete and up-to-date coverage of compressors, turbines, and combustion systems, and to introduce current research directions. The discussion of high-bypass turbofans has been expanded in keeping with their great commercial importance. Propulsion for civil supersonic transports is taken up in the current context. The chapter on hypersonic air breathing engines has been expanded to reflect interest in the use of scramjets to power the National Aerospace Plane. The discussion of exhaust emissions and noise and associated regulatory structures have been updated and there are many corrections and clarifications.
Active Stabilization of Rotating Stall and Surge in a Transonic Single Stage Axial Compressor
Author: Harald Jürgen WeiglCompressor Surge and Stall
Author: R. C. PampreenPublisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 532
Book Description
High efficiency axial and centrifugal compressors are important in fields as diverse as aircraft engines, superchargers and turbochargers, process and refrigeration compressors. Compressors must achieve high efficiency in blade rows in diffusing flow fields. Of equal and sometimes greater importance is the range os stable operation of the compressor. Blade row stall characteristics determine the limit os stable operation. Blading can stall uniformly with symmetric flow breakdown or asymmetrically in rotating stall, wich propagates around the periphery of the blade row. Depending on aerodynamic conditions, surge may occur instead of, in concert with, or subsequent to blade row stall. The transient breakdown and recovery of aerodynamic loading not only limits compressor performance but also leads to mechanical failures caused by the vibrational loads imposed on the blades. There is no need to know what initiates these performance limits so that surge and stall margins can be optimized and control strategies can be planned. the first step toward understanding is to be knowledgeable about he physical processes occurring during surge and stall. This will permit the designer to anticipate variable geometry needs such as variable inlet guide vanes, variable statuors, and bleed port strategies. Theoritical treatment is far from being well established, however, there are many approaches discussed in the literature. This book is a unique reference to the subject matter. Physical descriptions of the phenomena are given, test results are presented, and analytical studies are discussed. There has been much written about the experimental investigations and theoretical treatments related to surge and stall. To assist those who would pursue advancements in furthering ou knowledge of surge and stall, it seemed appropriate to have a resource that contains a compendium of information on this subject. That is the purpose of this book. [Source : d'après la 4e de couverture].
Time-resolved Stagnation Temperature Measurement in a Transonic Compressor Stage
Author: Massachusetts Institute of Technology. Gas Turbine & Plasma Dynamics LaboratoryPublisher:
ISBN:
Category :
Languages : en
Pages : 172
Book Description
An Investigation of Surge in a High-speed Centrifugal Compressor Using Digital Piv
Author: National Aeronautics and Space Administration (NASA)Publisher: Createspace Independent Publishing Platform
ISBN: 9781726206143
Category :
Languages : en
Pages : 28
Book Description
Compressor stall is a catastrophic breakdown of the flow in a compressor, which can lead to a loss of engine power, large pressure transients in the inlet/nacelle and engine flameout. The implementation of active or passive strategies for controlling rotating stall and surge can significantly extend the stable operating range of a compressor without substantially sacrificing performance. It is crucial to identify the dynamic changes occurring in the flow field prior to rotating stall and surge in order to successfully control these events. Generally, pressure transducer measurements are made to capture the transient response of a compressor prior to rotating stall. In this investigation, Digital Particle Imaging Velocimetry (DPIV) is used in conjunction with dynamic pressure transducers to simultaneously capture transient velocity and pressure measurements in the non-stationary flow field during compressor surge. DPIV is an instantaneous, planar measurement technique which is ideally suited for studying transient flow phenomena in high speed turbomachinery and has been used previously to successfully map the stable operating point flow field in the diffuser of a high speed centrifugal compressor. Through the acquisition of both DPIV images and transient pressure data, the time evolution of the unsteady flow during surge is revealed.Wernet, Mark P. and Bright, Michelle M. and Skoch, Gary J.Glenn Research CenterCENTRIFUGAL COMPRESSORS; ROTATING STALLS; PARTICLE IMAGE VELOCIMETRY; PRESSURE MEASUREMENT; DYNAMIC PRESSURE; PRESSURE SENSORS; TRANSIENT PRESSURES; UNSTEADY FLOW...