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Tfans Tone Fan Noise Design Prediction System Users Manual Tfans Version 15
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721130627 Total Pages :140 pages Book Rating :4.1/5 (36 download)
Book Synopsis Tfans-Tone Fan Noise Design/Prediction System by : National Aeronautics and Space Administration (NASA)
Download or read book Tfans-Tone Fan Noise Design/Prediction System written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-15 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: TFaNS is the Tone Fan Noise Design/Prediction System developed by Pratt & Whitney under contract to NASA Glenn. The purpose of this system is to predict tone noise emanating from a fan stage including the effects of reflection and transmission by the rotor and stator and by the duct inlet and nozzle. The first version of this design system was developed under a previous NASA contract. Several improvements have been made to TFaNS. This users' manual shows how to run this new system. TFaNS consists of the codes that compute the acoustic properties (reflection and transmission coefficients) of the various elements and writes them to files, CUP3D Fan Noise Coupling Code that reads these files, solves the coupling problem, and outputs the desired noise predictions, and AWAKEN CFD/Measured Wake Postprocessor which reformats CFD wake predictions and/or measured wake data so they can be used by the system. This report provides information on code input and file structure essential for potential users of TFaNS. Topol, David A. and Huff, Dennis L. (Technical Monitor) Glenn Research Center NAS3-27727; WBS 781-30-09
Book Synopsis TFaNS-Tone Fan Noise Design/Prediction System: Users' Manual TFaNS Version 1.5 by :
Download or read book TFaNS-Tone Fan Noise Design/Prediction System: Users' Manual TFaNS Version 1.5 written by and published by . This book was released on 2003 with total page 144 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721077670 Total Pages :136 pages Book Rating :4.0/5 (776 download)
Book Synopsis TFaNS Tone Fan Noise Design/Prediction System. Volume 2; User's Manual; 1. 4 by : National Aeronautics and Space Administration (NASA)
Download or read book TFaNS Tone Fan Noise Design/Prediction System. Volume 2; User's Manual; 1. 4 written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-12 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: TFaNS is the Tone Fan Noise Design/Prediction System developed by Pratt & Whitney under contract to NASA Lewis (presently NASA Glenn). The purpose of this system is to predict tone noise emanating from a fan stage including the effects of reflection and transmission by the rotor and stator and by the duct inlet and nozzle. These effects have been added to an existing annular duct/isolated stator noise prediction capability. TFaNS consists of: the codes that compute the acoustic properties (reflection and transmission coefficients) of the various elements and write them to files. CUP3D: Fan Noise Coupling Code that reads these files, solves the coupling problem, and outputs the desired noise predictions. AWAKEN: CFD/Measured Wake Postprocessor which reformats CFD wake predictions and/or measured wake data so it can be used by the system. This volume of the report provides information on code input and file structure essential for potential users of TFANS. This report is divided into three volumes: Volume 1. System Description, CUP3D Technical Documentation, and Manual for Code Developers; Volume 2. User's Manual, TFANS Vers. 1.4; Volume 3. Evaluation of System Codes. Topol, David A. and Eversman, Walter Glenn Research Center NAS3-26618; NAS3-27727; RTOP 538-03-11
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721015139 Total Pages :78 pages Book Rating :4.0/5 (151 download)
Book Synopsis Tfans Tone Fan Noise Design/Prediction System. Volume 1; System Description, Cup3d Technical Documentation and Manual for Code Developers by : National Aeronautics and Space Administration (NASA)
Download or read book Tfans Tone Fan Noise Design/Prediction System. Volume 1; System Description, Cup3d Technical Documentation and Manual for Code Developers written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-11 with total page 78 pages. Available in PDF, EPUB and Kindle. Book excerpt: TFaNS is the Tone Fan Noise Design/Prediction System developed by Pratt & Whitney under contract to NASA Lewis (presently NASA Glenn). The purpose of this system is to predict tone noise emanating from a fan stage including the effects of reflection and transmission by the rotor and stator and by the duct inlet and nozzle. These effects have been added to an existing annular duct/isolated stator noise prediction capability. TFaNS consists of: The codes that compute the acoustic properties (reflection and transmission coefficients) of the various elements and write them to files. Cup3D: Fan Noise Coupling Code that reads these files, solves the coupling problem, and outputs the desired noise predictions. AWAKEN: CFD/Measured Wake Postprocessor which reformats CFD wake predictions and/or measured wake data so it can be used by the system. This volume of the report provides technical background for TFaNS including the organization of the system and CUP3D technical documentation. This document also provides information for code developers who must write Acoustic Property Files in the CUP3D format. This report is divided into three volumes: Volume I: System Description, CUP3D Technical Documentation, and Manual for Code Developers; Volume II: User's Manual, TFaNS Vers. 1.4; Volume III: Evaluation of System Codes.Topol, David A.Glenn Research CenterACOUSTIC PROPERTIES; AERODYNAMIC NOISE; NOISE PREDICTION (AIRCRAFT); AIRCRAFT NOISE; ROTOR BLADES (TURBOMACHINERY); STATOR BLADES; INLET NOZZLES; COUPLING COEFFICIENTS; SCATTERING COEFFICIENTS; COMPUTER PROGRAMS
Author :National Aeronautics and Space Adm Nasa Publisher :Independently Published ISBN 13 :9781723895722 Total Pages :58 pages Book Rating :4.8/5 (957 download)
Book Synopsis Tfans Tone Fan Noise Design/Prediction System. Volume 3; Evaluation of System Codes by : National Aeronautics and Space Adm Nasa
Download or read book Tfans Tone Fan Noise Design/Prediction System. Volume 3; Evaluation of System Codes written by National Aeronautics and Space Adm Nasa and published by Independently Published. This book was released on 2018-09-21 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: TFANS is the Tone Fan Noise Design/Prediction System developed by Pratt & Whitney under contract to NASA Lewis (presently NASA Glenn). The purpose of this system is to predict tone noise emanating from a fan stage including the effects of reflection and transmission by the rotor and stator and by the duct inlet and nozzle. These effects have been added to an existing annular duct/isolated stator noise prediction capability. TFANS consists of: The codes that compute the acoustic properties (reflection and transmission coefficients) of the various elements and write them to files. Cup3D: Fan Noise Coupling Code that reads these files, solves the coupling problem, and outputs the desired noise predictions. AWAKEN: CFD/Measured Wake Postprocessor which reformats CFD wake predictions and/or measured wake data so it can be used by the system. This volume of the report evaluates TFANS versus full-scale and ADP 22" fig data using the semi-empirical wake modelling in the system. This report is divided into three volumes: Volume 1: System Description, CUP3D Technical Documentation, and Manual for Code Developers; Volume II: User's Manual, TFANS Version 1.4; Volume III: Evaluation of System Codes.Topol, David A.Glenn Research CenterAERODYNAMIC NOISE; FAN BLADES; ROTORS; STATORS; INTERACTIONAL AERODYNAMICS; NOISE PREDICTION (AIRCRAFT); AIRCRAFT NOISE; PROPELLER NOISE; COMPUTER PROGRAMS; INLET NOZZLES; BLADE-VORTEX INTERACTION; ROTOR STATOR INTERACTIONS; USER MANUALS (COMPUTER PROGRAMS); ACOUSTIC PROPERTIES
Book Synopsis Evaluation of the Tone Fan Noise Design/Prediction System (TFaNS) at the NASA Glenn Research Center by :
Download or read book Evaluation of the Tone Fan Noise Design/Prediction System (TFaNS) at the NASA Glenn Research Center written by and published by . This book was released on 1999 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis TFANS TONE FAN NOISE DESIGN/PREDICTION SYSTEM FINAL REPORT... NASA/CR-1999-208882/VOL1... MAY 27, 1999 by : United States. National Aeronautics and Space Administration
Download or read book TFANS TONE FAN NOISE DESIGN/PREDICTION SYSTEM FINAL REPORT... NASA/CR-1999-208882/VOL1... MAY 27, 1999 written by United States. National Aeronautics and Space Administration and published by . This book was released on 1999* with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tfans Tone Fan Noise Design/prediction System ... Nasa/cr-1999-208884 ... Jul. 9, 1999 by :
Download or read book Tfans Tone Fan Noise Design/prediction System ... Nasa/cr-1999-208884 ... Jul. 9, 1999 written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Tfans Tone Fan Noise Design/prediction System Final Report ... Nasa/cr-1999-208883 ... Jul. 9, 1999 by :
Download or read book Tfans Tone Fan Noise Design/prediction System Final Report ... Nasa/cr-1999-208883 ... Jul. 9, 1999 written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721196593 Total Pages :28 pages Book Rating :4.1/5 (965 download)
Book Synopsis Evaluation of the Tone Fan Noise Design/Prediction System (TFaNS) at the NASA Glenn Research Center by : National Aeronautics and Space Administration (NASA)
Download or read book Evaluation of the Tone Fan Noise Design/Prediction System (TFaNS) at the NASA Glenn Research Center written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-15 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt: Version 1.4 of TFaNS, the Tone Fan Noise Design/Prediction System. has recently been evaluated at the NASA Glenn Research Center. Data from tests of the Allison Ultra High Bypass Fan (UHBF) were used to compare to predicted farfield directivities for the radial stator configuration. There was good agreement between measured and predicted directivities at low fan speeds when rotor effects were neglected in the TFaNS calculations. At higher fan speeds, TFaNS is shown to be useful in predicting overall trends rather than absolute sound pressure levels. Koch, L. Danielle Glenn Research Center E-12011
Book Synopsis Evaluation of the Tone Fan Noise Design/Prediction System (TFaNS) at the NASA Glenn Research Center by : L. Danielle Koch
Download or read book Evaluation of the Tone Fan Noise Design/Prediction System (TFaNS) at the NASA Glenn Research Center written by L. Danielle Koch and published by . This book was released on 1999 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Tfans Tone Fan Noise Design written by and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :National Aeronautics and Space Administration (NASA) Publisher : ISBN 13 :9781466499850 Total Pages :92 pages Book Rating :4.4/5 (998 download)
Book Synopsis Broadband Fan Noise Prediction System for Turbofan Engines by : National Aeronautics and Space Administration (NASA)
Download or read book Broadband Fan Noise Prediction System for Turbofan Engines written by National Aeronautics and Space Administration (NASA) and published by . This book was released on 2010-11-01 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pratt & Whitney has developed a Broadband Fan Noise Prediction System (BFaNS) for turbofan engines. This system computes the noise generated by turbulence impinging on the leading edges of the fan and fan exit guide vane, and noise generated by boundary-layer turbulence passing over the fan trailing edge. BFaNS has been validated on three fan rigs that were tested during the NASA Advanced Subsonic Technology Program (AST). The predicted noise spectra agreed well with measured data. The predicted effects of fan speed, vane count, and vane sweep also agreed well with measurements. The noise prediction system consists of two computer programs: Setup_BFaNS and BFaNS. Setup_BFaNS converts user-specified geometry and flow-field information into a BFaNS input file. From this input file, BFaNS computes the inlet and aft broadband sound power spectra generated by the fan and FEGV. The output file from BFaNS contains the inlet, aft and total sound power spectra from each noise source. This report is the first volume of a three-volume set documenting the Broadband Fan Noise Prediction System: Volume 1: Setup_BFaNS User's Manual and Developer's Guide Volume 2: BFaNS User's Manual and Developer's Guide Volume 3: Validation and Test Cases The present volume begins with an overview of the Broadband Fan Noise Prediction System, followed by step-by-step instructions for installing and running Setup_BFaNS. It concludes with technical documentation of the Setup_BFaNS computer program.
Author :National Aeronautics and Space Administration (NASA) Publisher : ISBN 13 :9781466499867 Total Pages :50 pages Book Rating :4.4/5 (998 download)
Book Synopsis Broadband Fan Noise Prediction System for Turbofan Engines by : National Aeronautics and Space Administration (NASA)
Download or read book Broadband Fan Noise Prediction System for Turbofan Engines written by National Aeronautics and Space Administration (NASA) and published by . This book was released on 2010-11-01 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt: Pratt & Whitney has developed a Broadband Fan Noise Prediction System (BFaNS) for turbofan engines. This system computes the noise generated by turbulence impinging on the leading edges of the fan and fan exit guide vane, and noise generated by boundary-layer turbulence passing over the fan trailing edge. BFaNS has been validated on three fan rigs that were tested during the NASA Advanced Subsonic Technology Program (AST). The predicted noise spectra agreed well with measured data. The predicted effects of fan speed, vane count, and vane sweep also agreed well with measurements. The noise prediction system consists of two computer programs: Setup_BFaNS and BFaNS. Setup_BFaNS converts user-specified geometry and flow-field information into a BFaNS input file. From this input file, BFaNS computes the inlet and aft broadband sound power spectra generated by the fan and FEGV. The output file from BFaNS contains the inlet, aft and total sound power spectra from each noise source. This report is the first volume of a three-volume set documenting the Broadband Fan Noise Prediction System: Volume 1: Setup_BFaNS User's Manual and Developer's Guide Volume 2: BFaNS User's Manual and Developer's Guide Volume 3: Validation and Test Cases The present volume begins with an overview of the Broadband Fan Noise Prediction System, followed by step-by-step instructions for installing and running Setup_BFaNS. It concludes with technical documentation of the Setup_BFaNS computer program.
Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781720954941 Total Pages :82 pages Book Rating :4.9/5 (549 download)
Book Synopsis Source Methodology for Turbofan Noise Prediction (Source3d Technical Documentation) by : National Aeronautics and Space Administration (NASA)
Download or read book Source Methodology for Turbofan Noise Prediction (Source3d Technical Documentation) written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-11 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report provides the analytical documentation for the SOURCE3D Rotor Wake/Stator Interaction Code. It derives the equations for the rotor scattering coefficients and stator source vector and scattering coefficients that are needed for use in the TFANS (Theoretical Fan Noise Design/Prediction System). SOURCE3D treats the rotor and stator as isolated source elements. TFANS uses this information, along with scattering coefficients for inlet and exit elements, and provides complete noise solutions for turbofan engines. SOURCE3D is composed of a collection of FORTRAN programs that have been obtained by extending the approach of the earlier V072 Rotor Wake/Stator Interaction Code. Similar to V072, it treats the rotor and stator as a collection of blades and vanes having zero thickness and camber contained in an infinite, hardwall annular duct. SOURCE3D adds important features to the V072 capability-a rotor element, swirl flow and vorticity waves, actuator disks for flow turning, and combined rotor/actuator disk and stator/actuator disk elements. These items allow reflections from the rotor, frequency scattering, and mode trapping, thus providing more complete noise predictions than previously. The code has been thoroughly verified through comparison with D.B. Hanson's CUP2D two- dimensional code using a narrow annulus test case.Meyer, Harold D.Glenn Research CenterAPPLICATIONS PROGRAMS (COMPUTERS); NOISE PREDICTION; ROTORS; STATORS; TURBOFAN ENGINES; WAKES; ROTOR AERODYNAMICS; DOCUMENTATION; ACOUSTIC SIMULATION; VORTICITY; FORTRAN; UPWASH; SCATTERING COEFFICIENTS
Book Synopsis Scientific and Technical Aerospace Reports by :
Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on with total page 994 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Handbook of Noise and Vibration Control by : Malcolm J. Crocker
Download or read book Handbook of Noise and Vibration Control written by Malcolm J. Crocker and published by John Wiley & Sons. This book was released on 2007-10-05 with total page 1594 pages. Available in PDF, EPUB and Kindle. Book excerpt: Two of the most acclaimed reference works in the area of acoustics in recent years have been our Encyclopedia of Acoustics, 4 Volume set and the Handbook of Acoustics spin-off. These works, edited by Malcolm Crocker, positioned Wiley as a major player in the acoustics reference market. With our recently published revision of Beranek & Ver's Noise and Vibration Control Engineering, Wiley is a highly respected name in the acoustics business. Crocker's new handbook covers an area of great importance to engineers and designers. Noise and vibration control is one largest areas of application of the acoustics topics covered in the successful encyclopedia and handbook. It is also an area that has been under-published in recent years. Crocker has positioned this reference to cover the gamut of topics while focusing more on the applications to industrial needs. In this way the book will become the best single source of need-to-know information for the professional markets.
