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Computational Study Of Axisymmetric Off Design Nozzle Flows
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Author :National Aeronautics and Space Administration (NASA) Publisher :Createspace Independent Publishing Platform ISBN 13 :9781721606443 Total Pages :26 pages Book Rating :4.6/5 (64 download)
Book Synopsis Computational Study of Axisymmetric Off-Design Nozzle Flows by : National Aeronautics and Space Administration (NASA)
Download or read book Computational Study of Axisymmetric Off-Design Nozzle Flows written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-06-20 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid Dynamics (CFD) analyses of axisymmetric circular-arc boattail nozzles operating off-design at transonic Mach numbers have been completed. These computations span the very difficult transonic flight regime with shock-induced separations and strong adverse pressure gradients. External afterbody and internal nozzle pressure distributions computed with the Wind code are compared with experimental data. A range of turbulence models were examined, including the Explicit Algebraic Stress model. Computations have been completed at freestream Mach numbers of 0.9 and 1.2, and nozzle pressure ratios (NPR) of 4 and 6. Calculations completed with variable time-stepping (steady-state) did not converge to a true steady-state solution. Calculations obtained using constant timestepping (timeaccurate) indicate less variations in flow properties compared with steady-state solutions. This failure to converge to a steady-state solution was the result of using variable time-stepping with large-scale separations present in the flow. Nevertheless, time-averaged boattail surface pressure coefficient and internal nozzle pressures show reasonable agreement with experimental data. The SST turbulence model demonstrates the best overall agreement with experimental data. DalBello, Teryn and Georgiadis, Nicholas and Yoder, Dennis and Keith, Theo Glenn Research Center NASA/TM-2003-212876, E-14289, AIAA Paper 2004-0530
Book Synopsis Computational Study of Axisymmetric Off-Design Nozzle Flows by : Teryn Dalbello
Download or read book Computational Study of Axisymmetric Off-Design Nozzle Flows written by Teryn Dalbello and published by BiblioGov. This book was released on 2013-08 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: Computational Fluid Dynamics (CFD) analyses of axisymmetric circular-arc boattail nozzles operating off-design at transonic Mach numbers have been completed. These computations span the very difficult transonic flight regime with shock-induced separations and strong adverse pressure gradients. External afterbody and internal nozzle pressure distributions computed with the Wind code are compared with experimental data. A range of turbulence models were examined, including the Explicit Algebraic Stress model. Computations have been completed at freestream Mach numbers of 0.9 and 1.2, and nozzle pressure ratios (NPR) of 4 and 6. Calculations completed with variable time-stepping (steady-state) did not converge to a true steady-state solution. Calculations obtained using constant timestepping (timeaccurate) indicate less variations in flow properties compared with steady-state solutions. This failure to converge to a steady-state solution was the result of using variable time-stepping with large-scale separations present in the flow. Nevertheless, time-averaged boattail surface pressure coefficient and internal nozzle pressures show reasonable agreement with experimental data. The SST turbulence model demonstrates the best overall agreement with experimental data.
Book Synopsis Computational Prediction of Isolated Performance of an Axisymmetric Nozzle at Mach Number 0.90 by : John R. Carlson
Download or read book Computational Prediction of Isolated Performance of an Axisymmetric Nozzle at Mach Number 0.90 written by John R. Carlson and published by . This book was released on 1994 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Computational Analysis of the Viscous Transonic Flow Field of Axisymmetric Minimum Length Nozzles by : Alok Singh Gautam
Download or read book A Computational Analysis of the Viscous Transonic Flow Field of Axisymmetric Minimum Length Nozzles written by Alok Singh Gautam and published by . This book was released on 1992 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design of Axisymmetric Exhaust Nozzles by Method of Characteristics Incorporating a Variable Isentropic Exponent by : Eleanor Costilow Guentert
Download or read book Design of Axisymmetric Exhaust Nozzles by Method of Characteristics Incorporating a Variable Isentropic Exponent written by Eleanor Costilow Guentert and published by . This book was released on 1959 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Methods to Optimize Supersonic Nozzles by : Igor Gaissinski
Download or read book Computational Methods to Optimize Supersonic Nozzles written by Igor Gaissinski and published by LAP Lambert Academic Publishing. This book was released on 2013 with total page 400 pages. Available in PDF, EPUB and Kindle. Book excerpt: The book is devoted to calculation methods of a converging-diverging nozzle used in propulsion and the high velocity flow. The algorithms and programs given in the book are intended to help engineers and students to design and calculate the nozzle parameters to provide optimal parameters for compressible supersonic flows. The present monograph is a tutorial (handbook) to calculate and determine the optimal parameters for converging-diverging nozzles provided supersonic flow. The main program consists from three main parts: programs for calculation the profile of the Contraction zone, EOD code for the flow in the Contraction zone, the program Rott-Crabtree for calculation the pressure gradient Pohlhausen parameter, the program for the aerodynamic design of axisymmetric and two-dimensional nozzles for supersonic and hypersonic wind tunnels, programs for solving laminar, transitional, or turbulent compressible boundary layer equations for two-dimensional and axisymmetric flow, and the program to obtain hypersonic boundary layer stability. The book is designed to be an instrument for students and scientists interested in study supersonic flow and high-temperature gas dynamics.
Book Synopsis The Aerodynamic Design of High Mach Number Nozzles Utilizing Axisymmetric Flow with Application to a Nozzle of Square Test Section by : Ivan E. Beckwith
Download or read book The Aerodynamic Design of High Mach Number Nozzles Utilizing Axisymmetric Flow with Application to a Nozzle of Square Test Section written by Ivan E. Beckwith and published by . This book was released on 1952 with total page 30 pages. Available in PDF, EPUB and Kindle. Book excerpt: A method is given for the design of three-dimensional nozzles utilizing axisymmetric flow to produce uniform flow in a test chamber of arbitrary cross section. The method is applied to obtain the coordinates of a Mach number 10 nozzle for which a square test section is specified. Radial flow is used in a portion of the flow field to reduce the computation time. The remainder of the flow field is computed by the method of characteristics, but a simplified method is used near the axis. Tables which facilitate computation of the radial flow and the flow near the axis are included. Transition streamlines determined from the analytic expressions of Kuno Foelsch are compared with the streamlines obtained from the characteristic net of the Mach number 10 nozzle.
Book Synopsis Design of Axisymmetric Exhaust Nozzles by Method of Characteristics Incorporating a Variable Isentropic Exponent by : Eleanor Costilow Guentert
Download or read book Design of Axisymmetric Exhaust Nozzles by Method of Characteristics Incorporating a Variable Isentropic Exponent written by Eleanor Costilow Guentert and published by . This book was released on 1959 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt: An analytical method for including thermodynamic data with variable isentropic exponent in the method of characteristics as applied to the design of high-temperature exhaust nozzles has been obtained. Several bell-shaped nozzles have been designed with this method. A comparison of nozzle contours obtained by assuming identical boundary conditions and either frozen or equilibrium composition shows that significant differences occur. A computation of the variation of vacuum specific impulse with axial length showed that considerable nozzle length, and hence weight, can be eliminated without serious thrust penalties in nozzle designs that gradually expand the flow to uniform exit conditions.
Book Synopsis Analytical and Experimental Study of Axisymmetric Truncated Plug Nozzle Flow Fields by : T. J. Mueller
Download or read book Analytical and Experimental Study of Axisymmetric Truncated Plug Nozzle Flow Fields written by T. J. Mueller and published by . This book was released on 1972 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 1995 with total page 704 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Computational Analysis of an Axisymmetric Fluidic Injection Nozzle by : T. Hawkes
Download or read book Computational Analysis of an Axisymmetric Fluidic Injection Nozzle written by T. Hawkes and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Laminar Flow-field Computation in Axisymmetric Nozzles by : B. C. Barber
Download or read book Laminar Flow-field Computation in Axisymmetric Nozzles written by B. C. Barber and published by . This book was released on 1977 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: A numerical procedure for computing the laminar flow-field in nozzles at throat Reynolds numbers of 300-3000 is described. Such nozzles are found in spacecraft position control thrusters, chemical lasers, and low density hypersonic wind-tunnels. A parabolic approximation of the Navier-Stokes equations (the boundary layer equations) is transformed to Von Mises form and solved numerically by a central difference method. The entire subsonic and supersonic flow-field is computed. No assumptions or approximations, other than those inherent in the flow equations, are involved. The method is of the direct type and the flow-field for any given nozzle geometry may, in principle, be computed. Examples are given comparing computed results with published experimental data. (Author).
Book Synopsis AIAA Journal by : American Institute of Aeronautics and Astronautics
Download or read book AIAA Journal written by American Institute of Aeronautics and Astronautics and published by . This book was released on 2006 with total page 1380 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Experimental and Computational Investigation of a Translating-Throat Single-Expansion-Ramp Nozzle by : Karen A. Deere
Download or read book Experimental and Computational Investigation of a Translating-Throat Single-Expansion-Ramp Nozzle written by Karen A. Deere and published by . This book was released on 1999 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit July 11-14, 2004, Fort Lauderdale, FL.: 04-3900 - 04-3949 by :
Download or read book 40th AIAA/ASME/SAE/ASEE Joint Propulsion Conference & Exhibit July 11-14, 2004, Fort Lauderdale, FL.: 04-3900 - 04-3949 written by and published by . This book was released on 2004 with total page 586 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Design, Fabrication, and Evaluation of Axisymmetric Nozzles by : Larry Lee Lynes
Download or read book Design, Fabrication, and Evaluation of Axisymmetric Nozzles written by Larry Lee Lynes and published by . This book was released on 1959 with total page 108 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book NASA Technical Memorandum written by and published by . This book was released on 1991 with total page 298 pages. Available in PDF, EPUB and Kindle. Book excerpt:
