Unsteady Analysis Of Inlet Compressor Acoustic Interactions Using Coupled 3 D And 1 D Cfd Codes
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Unsteady Analysis Of Inlet Compressor Acoustic Interactions Using Coupled 3 D And 1 D Cfd Codes
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Author : National Aeronautics and Space Administration (NASA)
language : en
Publisher: Createspace Independent Publishing Platform
Release Date : 2018-06-16
Unsteady Analysis Of Inlet Compressor Acoustic Interactions Using Coupled 3 D And 1 D Cfd Codes written by National Aeronautics and Space Administration (NASA) and has been published by Createspace Independent Publishing Platform this book supported file pdf, txt, epub, kindle and other format this book has been release on 2018-06-16 with categories.
It is well known that the dynamic response of a mixed compression supersonic inlet is very sensitive to the boundary condition imposed at the subsonic exit (engine face) of the inlet. In previous work, a 3-D computational fluid dynamics (CFD) inlet code (NPARC) was coupled at the engine face to a 3-D turbomachinery code (ADPAC) simulating an isolated rotor and the coupled simulation used to study the unsteady response of the inlet. The main problem with this approach is that the high fidelity turbomachinery simulation becomes prohibitively expensive as more stages are included in the simulation. In this paper, an alternative approach is explored, wherein the inlet code is coupled to a lesser fidelity 1-D transient compressor code (DYNTECC) which simulates the whole compressor. The specific application chosen for this evaluation is the collapsing bump experiment performed at the University of Cincinnati, wherein reflections of a large-amplitude acoustic pulse from a compressor were measured. The metrics for comparison are the pulse strength (time integral of the pulse amplitude) and wave form (shape). When the compressor is modeled by stage characteristics the computed strength is about ten percent greater than that for the experiment, but the wave shapes are in poor agreement. An alternate approach that uses a fixed rise in duct total pressure and temperature (so-called 'lossy' duct) to simulate a compressor gives good pulse shapes but the strength is about 30 percent low. Suresh, A. and Cole, G. L. Glenn Research Center NASA/TM-2000-210247, E-12367, NAS 1.15:210247
Unsteady Analysis Of Inlet Compressor Acoustic Interactions Using Coupled 3 D And 1 D Cfd Codes
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Author :
language : en
Publisher:
Release Date : 2000
Unsteady Analysis Of Inlet Compressor Acoustic Interactions Using Coupled 3 D And 1 D Cfd Codes written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2000 with categories.
Analysis Of Inlet Compressor Acoustic Interactions Using Coupled Cfd Codes
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Author : A. Suresh
language : en
Publisher:
Release Date : 1998
Analysis Of Inlet Compressor Acoustic Interactions Using Coupled Cfd Codes written by A. Suresh and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1998 with categories.
Unsteady Computational Fluid Dynamics In Aeronautics
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Author : P.G. Tucker
language : en
Publisher: Springer Science & Business Media
Release Date : 2013-08-30
Unsteady Computational Fluid Dynamics In Aeronautics written by P.G. Tucker 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 2013-08-30 with Technology & Engineering categories.
The field of Large Eddy Simulation (LES) and hybrids is a vibrant research area. This book runs through all the potential unsteady modelling fidelity ranges, from low-order to LES. The latter is probably the highest fidelity for practical aerospace systems modelling. Cutting edge new frontiers are defined. One example of a pressing environmental concern is noise. For the accurate prediction of this, unsteady modelling is needed. Hence computational aeroacoustics is explored. It is also emerging that there is a critical need for coupled simulations. Hence, this area is also considered and the tensions of utilizing such simulations with the already expensive LES. This work has relevance to the general field of CFD and LES and to a wide variety of non-aerospace aerodynamic systems (e.g. cars, submarines, ships, electronics, buildings). Topics treated include unsteady flow techniques; LES and hybrids; general numerical methods; computational aeroacoustics; computational aeroelasticity; coupled simulations and turbulence and its modelling (LES, RANS, transition, VLES, URANS). The volume concludes by pointing forward to future horizons and in particular the industrial use of LES. The writing style is accessible and useful to both academics and industrial practitioners. From the reviews: "Tucker's volume provides a very welcome, concise discussion of current capabilities for simulating and modellng unsteady aerodynamic flows. It covers the various pos sible numerical techniques in good, clear detail and presents a very wide range of practical applications; beautifully illustrated in many cases. This book thus provides a valuable text for practicing engineers, a rich source of background information for students and those new to this area of Research & Development, and an excellent state-of-the-art review for others. A great achievement." Mark Savill FHEA, FRAeS, C.Eng, Professor of Computational Aerodynamics Design & Head of Power & Propulsion Sciences, Department of Power & Propulsion, School of Engineering, Cranfield University, Bedfordshire, U.K. "This is a very useful book with a wide coverage of many aspects in unsteady aerodynamics method development and applications for internal and external flows." L. He, Rolls-Royce/RAEng Chair of Computational Aerothermal Engineering, Oxford University, U.K. "This comprehensive book ranges from classical concepts in both numerical methods and turbulence modelling approaches for the beginner to latest state-of-the-art for the advanced practitioner and constitutes an extremely valuable contribution to the specific Computational Fluid Dynamics literature in Aeronautics. Student and expert alike will benefit greatly by reading it from cover to cover." Sébastien Deck, Onera, Meudon, France
Monthly Catalog Of United States Government Publications
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Author :
language : en
Publisher:
Release Date : 1999-07
Monthly Catalog Of United States Government Publications written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999-07 with Government publications categories.
Applied Mechanics Reviews
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Author :
language : en
Publisher:
Release Date : 1987
Applied Mechanics Reviews written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Mechanics, Applied categories.
Scientific And Technical Aerospace Reports
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Author :
language : en
Publisher:
Release Date : 1995
Scientific And Technical Aerospace Reports written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Aeronautics categories.
International Aerospace Abstracts
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Author :
language : en
Publisher:
Release Date : 1999
International Aerospace Abstracts written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Aeronautics categories.
37th Aiaa Aerospace Sciences Meeting And Exhibit
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Author :
language : en
Publisher:
Release Date : 1999
37th Aiaa Aerospace Sciences Meeting And Exhibit written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Aeronautics categories.
The Finding Guide To Aiaa Meeting Papers
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Author : American Institute of Aeronautics and Astronautics. Technical Information Service
language : en
Publisher:
Release Date : 1996
The Finding Guide To Aiaa Meeting Papers written by American Institute of Aeronautics and Astronautics. Technical Information Service and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1996 with AIAA paper categories.