Theoretical And Experimental Analysis Of Cavitation Phenomena In Turbopumps For Space Applications
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Theoretical And Experimental Analysis Of Cavitation Phenomena In Turbopumps For Space Applications
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Author : Emilio Rapposelli
language : en
Publisher:
Release Date : 2003
Theoretical And Experimental Analysis Of Cavitation Phenomena In Turbopumps For Space Applications written by Emilio Rapposelli and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with categories.
Cavitation Instabilities And Rotordynamic Effects In Turbopumps And Hydroturbines
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Author : Luca d'Agostino
language : en
Publisher: Springer
Release Date : 2017-03-17
Cavitation Instabilities And Rotordynamic Effects In Turbopumps And Hydroturbines written by Luca d'Agostino and has been published by Springer this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-17 with Technology & Engineering categories.
The book provides a detailed approach to the physics, fluid dynamics, modeling, experimentation and numerical simulation of cavitation phenomena, with special emphasis on cavitation-induced instabilities and their implications on the design and operation of high performance turbopumps and hydraulic turbines. The first part covers the fundamentals (nucleation, dynamics, thermodynamic effects, erosion) and forms of cavitation (attached cavitation, cloud cavitation, supercavitation, vortex cavitation) relevant to hydraulic turbomachinery, illustrates modern experimental techniques for the characterization, visualization and analysis of cavitating flows, and introduces the main aspects of the hydrodynamic design and performance of axial inducers, centrifugal turbopumps and hydo-turbines. The second part focuses on the theoretical modeling, experimental analysis, and practical control of cavitation-induced fluid-dynamic and rotordynamic instabilities of hydraulic turbomachinery, with special emphasis on cavitating turbopumps (cavitation surge, rotating cavitation, higher order cavitation surge, rotordynamic whirl forces). Finally, the third part of the book illustrates the alternative approaches for the simulation of cavitating flows, with emphasis on both modeling and numerical aspects. Examples of applications to the simulation of unsteady cavitation in internal flows through hydraulic machinery are illustrated in detail.
39th Aiaa Asme Sae Asee Joint Propulsion Conference Exhibit July 20 23 2003 Huntsville Alabama 03 4750
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Author :
language : en
Publisher:
Release Date : 2003
39th Aiaa Asme Sae Asee Joint Propulsion Conference Exhibit July 20 23 2003 Huntsville Alabama 03 4750 written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Airplanes categories.
Characterization Of Cavitation Instabilities In Rocket Engine Turbopump Inducers
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Author : Vincent Wang (S.M.)
language : en
Publisher:
Release Date : 2016
Characterization Of Cavitation Instabilities In Rocket Engine Turbopump Inducers written by Vincent Wang (S.M.) and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016 with categories.
Characterized by super-synchronous rotation of cavities around the periphery of rocket engine turbopump inducers, rotating cavitation is the primary cavitation instability considered in this thesis. A recently developed hypothesis for rotating cavitation onset is assessed through novel experimental analysis and a previously developed body force modeling approach using the MIT inducer, representative of the design of the Space Shuttle main engine low-pressure oxidizer pump inducer. A previously developed temporal and spatial Fourier decomposition, known as Traveling Wave Energy (TWE) analysis, of experimental unsteady inlet pressure measurements of the cavitating MIT inducer is demonstrated. TWE analysis offers several advantages over the current experimental analysis methods, resolving frequency, spatial mode shapes, and rotation direction of cavitation phenomena. Cut-on/cut-off behavior between rotating cavitation and alternate blade cavitation is observed, supporting the hypothesis that alternate blade cavitation is a necessary precursor to rotating cavitation onset. TWE is adapted for use on high speed borescope video data taken in the same experimental campaign. The frequency content extracted is qualitatively correlated with the results from the pressure data, establishing TWE as a viable tool for quantitative analysis of optical data. The video TWE results indicate that cavitation instability signatures are uniform in the radial direction, suggesting that a pressure transducer array can be established as the primary detection method for rotating cavitation and thereby simplifying test setups. A body force based modeling approach typically used for aero-engine compressor stability prediction is assessed for use in predicting rotating cavitation. A previously developed inducer-specific body force model formulation is validated in a representative compressor geometry, capturing global performance across the characteristic within 7%. However, the model exhibits convergence issues when applied to the inducer, hypothesized to be due to sensitivity in the inducer's loss characteristics. The investigation suggests the low flow coefficient design of the inducer drives the loss sensitivity and is the root cause behind the model's convergence issues. The results indicate the body force model is valid for the higher flow coefficient designs and lower stagger angles typically found in aero-engine compressors and fans. Suggestions for desensitizing the model for the inducer as well as further diagnostics defining the limiting geometry case for body force modeling are made.
Fluid Dynamics Of Cavitation And Cavitating Turbopumps
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Author : Luca d'Agostino
language : en
Publisher: Springer Science & Business Media
Release Date : 2008-04-20
Fluid Dynamics Of Cavitation And Cavitating Turbopumps written by Luca d'Agostino and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2008-04-20 with Technology & Engineering categories.
The book focuses on the fluid dynamics of cavitation with special reference to high power density turbopumps, where it represents the major source of performance and life degradation. While covering the more fundamental aspects of cavitation and the main kinds of cavitating flows, there is focus on the hydrodynamics and instabilities of cavitating turbopumps. The book also illustrates the alternative approaches for modeling and engineering simulation of cavitating flows.
Micro Scale Turbopump Blade Cavitation
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Author : Sumita Pennathur
language : en
Publisher:
Release Date : 2001
Micro Scale Turbopump Blade Cavitation written by Sumita Pennathur and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2001 with categories.
Analytical And Experimental Study Of Dynamic Characteristics Of Turbopumps
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Author : Hideo Ohashi
language : en
Publisher:
Release Date : 1968
Analytical And Experimental Study Of Dynamic Characteristics Of Turbopumps written by Hideo Ohashi and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1968 with Turbine pumps categories.
Experimental Observation Of Cavitation Phenomena In Centrifugal Pump Impellers At Part Load
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Author : Vladimir Škara
language : en
Publisher:
Release Date : 2014
Experimental Observation Of Cavitation Phenomena In Centrifugal Pump Impellers At Part Load written by Vladimir Škara and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2014 with categories.
The Shock And Vibration Digest
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Author :
language : en
Publisher:
Release Date : 1980
The Shock And Vibration Digest written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1980 with Shock (Mechanics) categories.
Fluid Machinery And Fluid Mechanics
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Author : Jianzhong Xu
language : en
Publisher: Springer Science & Business Media
Release Date : 2010-07-05
Fluid Machinery And Fluid Mechanics written by Jianzhong Xu and has been published by Springer Science & Business Media this book supported file pdf, txt, epub, kindle and other format this book has been release on 2010-07-05 with Technology & Engineering categories.
"Fluid Machinery and Fluid Mechanics: 4th International Symposium (4th ISFMFE)" is the proceedings of 4th International Symposium on Fluid Machinery and Fluid Engineering, held in Beijing November 24-27, 2008. It contains 69 highly informative technical papers presented at the Mei Lecture session and the technical sessions of the symposium. The Chinese Society of Engineering Thermophysics (CSET) organized the First, the Second and the Third International Symposium on Fluid Machinery and Fluid Engineering (1996, 2000 and 2004). The purpose of the 4th Symposium is to provide a common forum for exchange of scientific and technical information worldwide on fluid machinery and fluid engineering for scientists and engineers. The main subject of this symposium is "Fluid Machinery for Energy Conservation". The "Mei Lecture" reports on the most recent developments of fluid machinery in commemoration of the late professor Mei Zuyan. The book is intended for researchers and engineers in fluid machinery and fluid engineering. Jianzhong Xu is a professor at the Chinese Society of Engineering Thermophysics, Chinese Academy of Sciences, Beijing.