Micro Scale Turbopump Blade Cavitation
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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.
Effect Of Blade Leading Edge Thickness On Cavitation Performance Of 80 6 Helical Inducer In Hydrogen
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Author : Royce D. Moore
language : en
Publisher:
Release Date : 1970
Effect Of Blade Leading Edge Thickness On Cavitation Performance Of 80 6 Helical Inducer In Hydrogen written by Royce D. Moore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1970 with Cavitation 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.
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.
Comparison Of Noncavitation And Cavitation Performance For 78 80 6 And 84 Helical Inducers Operated In Hydrogen
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Author : Royce D. Moore
language : en
Publisher:
Release Date : 1971
Comparison Of Noncavitation And Cavitation Performance For 78 80 6 And 84 Helical Inducers Operated In Hydrogen written by Royce D. Moore and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1971 with Cavitation categories.
Microelectromechanical Systems
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Author :
language : en
Publisher:
Release Date : 2002
Microelectromechanical Systems written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Electromechanical devices categories.
Smart Flow Control Processes In Micro Scale
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Author : Bengt Sunden
language : en
Publisher: MDPI
Release Date : 2020-12-29
Smart Flow Control Processes In Micro Scale written by Bengt Sunden and has been published by MDPI this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-12-29 with Technology & Engineering categories.
In recent years, microfluidic devices with a large surface-to-volume ratio have witnessed rapid development, allowing them to be successfully utilized in many engineering applications. A smart control process has been proposed for many years, while many new innovations and enabling technologies have been developed for smart flow control, especially concerning “smart flow control” at the microscale. This Special Issue aims to highlight the current research trends related to this topic, presenting a collection of 33 papers from leading scholars in this field. Among these include studies and demonstrations of flow characteristics in pumps or valves as well as dynamic performance in roiling mill systems or jet systems to the optimal design of special components in smart control systems.
Proceedings Of The Asme Fluids Engineering Division Summer Meeting
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Author : American Society of Mechanical Engineers. Fluids Engineering Division. Summer Meeting
language : en
Publisher:
Release Date : 1996
Proceedings Of The Asme Fluids Engineering Division Summer Meeting written by American Society of Mechanical Engineers. Fluids Engineering Division. Summer Meeting and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with Fluid dynamics 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.
Some Visual Observations Of Cavitation In Rotating Machinery
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Author : Richard F. Soltis
language : en
Publisher:
Release Date : 1965
Some Visual Observations Of Cavitation In Rotating Machinery written by Richard F. Soltis and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1965 with Cavitation categories.