Download or read book Multigrid Solution of the Navier Stokes Equations on Triangular Meshes written by National Aeronautics and Space Administration (NASA) and published by Createspace Independent Publishing Platform. This book was released on 2018-07-07 with total page 38 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Navier-Stokes algorithm for use on unstructured triangular meshes is presented. Spatial discretization of the governing equations is achieved using a finite element Galerkin approximation, which can be shown to be equivalent to a finite volume approximation for regular equilateral triangular meshes. Integration steady-state is performed using a multistage time-stepping scheme, and convergence is accelerated by means of implicit residual smoothing and an unstructured multigrid algorithm. Directional scaling of the artificial dissipation and the implicit residual smoothing operator is achieved for unstructured meshes by considering local mesh stretching vectors at each point. The accuracy of the scheme for highly stretched triangular meshes is validated by comparing computed flat-plate laminar boundary layer results with the well known similarity solution, and by comparing laminar airfoil results with those obtained from various well-established structured quadrilateral-mesh codes. The convergence efficiency of the present method is also shown to be competitive with those demonstrated by structured quadrilateral-mesh algorithms. Mavriplis, Dimitri J. and Jameson, Antony and Martinelli, Luigi Langley Research Center NAS1-18107; NAS1-18605; RTOP 505-90-21-01...

Download or read book Multigrid Solution of the Navier Stokes Equations on Triangular Meshes written by Institute for Computer Applications in Science and Engineering and published by . This book was released on 1989 with total page 44 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Unified Multigrid Solver for the Navier Stokes Equations on Mixed Element Meshes written by Institute for Computer Applications in Science and Engineering and published by . This book was released on 1995 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Accurate Multigrid Solution of the Euler Equations on Unstructured and Adaptive Meshes written by Institute for Computer Applications in Science and Engineering and published by . This book was released on 1988 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multigrid Solution of the Two dimensional Euler Equations on Unstructured Triangular Meshes written by Dimitri J. Mavriplis and published by . This book was released on 1987 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Upwind Method for the Solution of the 3D Euler and Navier Stokes Equations on Adaptively Meshes written by Michael J. Aftosmis and published by . This book was released on 1992 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: A new node based upwind scheme for the solution of the 3D Navier- Stokes equations on adaptively refined meshes is presented. The method uses a second-order upwind TVD scheme to integrate the convective terms, and discretizes the viscous terms with a new compact central difference technique. Grid adaptation is achieved through directional division of hexahedral cells in response to evolving features as the solution converges. The method is advanced in time with a multistage Runge-Kutta time stepping scheme. Two- and three- dimensional examples establish the accuracy of the inviscid and viscous discretization. These investigations highlight the ability of the method to produce crisp shocks, while accurately and economically resolving viscous layers. The representation of these and other structures is shown to be comparable to that obtained by structured methods. Further 3D examples demonstrate the ability of the adaptive algorithm to effectively locate and resolve multiple scale features in complex 3D flows with many interacting, viscous, and inviscid structures.

Download or read book Multigrid Methods VI written by Erik Dick and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 306 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume contains 39 of the papers presented at the Sixth European Multigrid Conference, held in Gent, Belgium, September 27-30, 1999. The topics treated at the conference cover all aspects of Multigrid Methods: theory, analysis, computer implementation, applications in the fields of physics, chemistry, fluid mechanics, structural mechanics and magnetism.

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Multigrid Methods III written by HACKBUSCH and published by Birkhäuser. This book was released on 2013-11-22 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: These proceedings contain a selection of papers presented at the Third European Conference on Multigrid Methods which was held in Bonn on October 1-4, 1990. Following conferences in 1981 and 1985, a platform for the presentation of new Multigrid results was provided for a third time. Multigrid methods no longer have problems being accepted by numerical analysts and users of numerical methods; on the contrary, they have been further developed in such a successful way that they have penetrated a variety of new fields of application. The high number of 154 participants from 18 countries and 76 presented papers show the need to continue the series of the European Multigrid Conferences. The papers of this volume give a survey on the current Multigrid situation; in particular, they correspond to those fields where new developments can be observed. For example, se veral papers study the appropriate treatment of time dependent problems. Improvements can also be noticed in the Multigrid approach for semiconductor equations. The field of parallel Multigrid variants, having been started at the second European Multigrid Conference, is now at the centre of interest.

Download or read book Computational Fluid Dynamics Review 1998 In 2 Volumes written by Mohamed M Hafez and published by World Scientific. This book was released on 1998-11-20 with total page 1169 pages. Available in PDF, EPUB and Kindle. Book excerpt: The first volume of CFD Review was published in 1995. The purpose of this new publication is to present comprehensive surveys and review articles which provide up-to-date information about recent progress in computational fluid dynamics, on a regular basis. Because of the multidisciplinary nature of CFD, it is difficult to cope with all the important developments in related areas. There are at least ten regular international conferences dealing with different aspects of CFD.It is a real challenge to keep up with all these activities and to be aware of essential and fundamental contributions in these areas. It is hoped that CFD Review will help in this regard by covering the state-of-the-art in this field.The present book contains sixty-two articles written by authors from the US, Europe, Japan and China, covering the main aspects of CFD. There are five sections: general topics, numerical methods, flow physics, interdisciplinary applications, parallel computation and flow visualization. The section on numerical methods includes grids, schemes and solvers, while that on flow physics includes incompressible and compressible flows, hypersonics and gas kinetics as well as transition and turbulence. This book should be useful to all researchers in this fast-developing field.

Download or read book Computational Fluid Dynamics Techniques written by Fathi Habashi and published by CRC Press. This book was released on 1995-11-22 with total page 930 pages. Available in PDF, EPUB and Kindle. Book excerpt: First published in 1995. Routledge is an imprint of Taylor & Francis, an informa company.

Download or read book Manuals Combined 30 Army Navy And Air Force Aviation EJECTION SEAT Studies written by and published by Jeffrey Frank Jones. This book was released on with total page 2169 pages. Available in PDF, EPUB and Kindle. Book excerpt: Just a SAMPLE of the CONTENTS: 1. | Full Text pdf - 5 MB Title: Steam Vapor Cleaning Ejection Seat Frames and Components Technical Evaluation AD Number: ADA412405 Corporate Author: NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD Personal Author: Kwan, R. M. Yost, A. J. Santiago, J. V. Herring, A. C. Conlin, M. M. Report Date: March 19, 2003 Media: 86 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 424295 From the collection: Technical 2. | Full Text pdf - 5 MB Title: Using the GPS to Improve Trajectory Position and Velocity Determination During Real-Time Ejection Seat Test and Evaluation AD Number: ADA415240 Corporate Author: AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT Personal Author: Schutte, Christina G. Report Date: February 01, 2003 Media: 127 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE 26 - NOT AVAILABLE IN MICROFICHE Report Classification: (Not Available). Source Code: 439106 From the collection: Technical 3. | Full Text pdf - 4 MB Title: Using the GPS to Collect Trajectory Data for Ejection Seat Design, Validation, and Testing AD Number: ADA401521 Corporate Author: AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH SCHOOL OF ENGINEERING AND MANAGEMENT Personal Author: Tredway, Brian R. Report Date: March 01, 2002 Media: 171 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE 26 - NOT AVAILABLE IN MICROFICHE Report Classification: (Not Available). Source Code: 439106 From the collection: Technical 4. | Full Text pdf - 974 KB Title: Biodynamic Modeling and Simulation of the Ejection Seat/Occupant System AD Number: ADA380710 Corporate Author: VERIDIAN ENGINEERING DAYTON OH Personal Author: Ma, Deren Obergefell, Louise Rizer, Annette Rogers, Lawrene Report Date: April 01, 2000 Media: 16 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 437799 From the collection: Technical 5. | Full Text pdf - 647 KB Title: Heat Treatment of Al 7075 for Ejection Seat Shear Wire. AD Number: ADA362873 Corporate Author: NAVAL SURFACE WARFARE CENTER CARDEROCK DIV BETHESDA MD SURVIVABILITY STRUCTURES AND MATERIALS DIRECTORATE Personal Author: Wong, Catherine R. Mastroianni, Lee S. Report Date: March 01, 1999 Media: 15 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 426437 From the collection: Technical 6. | Full Text pdf - 965 KB Title: Investigation of Occupant Restraint Improvements to the SIIIS-3 Ejection Seat. AD Number: ADA378913 Corporate Author: AIR FORCE RESEARCH LAB WRIGHT-PATTERSON AFB OH Personal Author: Pint, Steven M. Perry, Chris E. Report Date: January 01, 1999 Media: 21 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 434299 From the collection: Technical 7. | Full Text pdf - 595 KB Title: USN/USMC Ejection Seat Equipped Aircraft Anthropometric Accommodation AD Number: ADA377912 Corporate Author: NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD Personal Author: Kennedy, Greg Report Date: January 01, 1999 Media: 14 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 424295 From the collection: Technical 8. | Full Text pdf - 6 MB Title: +GZ Impact Tests of the Large JPATS Manikin in a Simulated Martin-Baker Ejection Seat. AD Number: ADA344944 Corporate Author: ARMSTRONG LAB WRIGHT-PATTERSON AFB OH BIODYNAMICS AND BIOCOMMUNICATIONS DIV Personal Author: Buhrman, John R. Report Date: October 01, 1997 Media: 179 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 423430 From the collection: Technical 9. | Full Text pdf - 19 MB Title: The K-36D Ejection Seat Foreign Comparative Testing (FCT) Program. AD Number: ADA321294 Corporate Author: ARMSTRONG LAB WRIGHT-PATTERSON AFB OH CREW SYSTEMS DIRECTORATE Personal Author: Specker, Lawrence J. Plaga, John A. Report Date: May 01, 1996 Media: 437 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE 23 - AVAILABILITY: DOCUMENT PARTIALLY ILLEGIBLE Report Classification: (Not Available). Source Code: 423429 From the collection: Technical 10. | Full Text pdf - 5 MB Title: Evaluation of a Proposed F-4 Ejection Seat Cushion by +Gz Impact Tests. AD Number: ADA289700 Corporate Author: ARMSTRONG LAB WRIGHT-PATTERSON AFB OH CREW SYSTEMS DIRECTORATE Personal Author: Brinkley, James W. Perry, Chris E. Salerno, Mark D. Orzech, Mary A. Report Date: July 01, 1993 Media: 119 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 423429 From the collection: Technical 11. | Full Text pdf - 3 MB Title: Computational Analysis of High-Speed Ejection Seats AD Number: ADA290328 Corporate Author: NIELSEN ENGINEERING AND RESEARCH INC MOUNTAIN CA Personal Author: Caruso, Steven C. Mendenhall, Michael R. Report Date: April 20, 1991 Media: 86 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 389783 From the collection: Technical 12. | Full Text pdf - 1 MB Title: Development of an Inflatable Head/Neck Restraint System for Ejection Seats (Update) AD Number: ADA067124 Corporate Author: NAVAL AIR DEVELOPMENT CENTER WARMINSTERPA AIRCRAFT AND CREW SYSTEMS TECHNOLOGY DIRECTORATE Personal Author: Zenobi, Thomas J. Report Date: December 19, 1978 Media: 36 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 393532 From the collection: Technical 13. | Full Text pdf - 1 MB Title: Development of an Inflatable Head/Neck Restraint System for Ejection Seats AD Number: ADA038762 Corporate Author: NAVAL AIR DEVELOPMENT CENTER WARMINSTERPA CREW SYSTEMS DEPT Personal Author: Zenobi, Thomas J. Report Date: February 28, 1977 Media: 32 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 406610 From the collection: Technical 14. | Full Text pdf - 8 MB Title: EJECTION SEAT TESTS CONDUCTED ON THE 10,000 FOOT AERODYNAMIC RESEARCH TRACK AT EDWARDS AIR FORCE BASE AD Number: AD0142103 Corporate Author: AIR FORCE FLIGHT DYNAMICS LAB WRIGHT-PATTERSON AFB OH Personal Author: HODELL, C. K. ROSNER, A. H. Report Date: November 01, 1957 Media: 93 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 012070 From the collection: Technical 15. | Full Text pdf - 1 MB Title: Footrests on Upward Ejection Seats AD Number: ADA075860 Corporate Author: WRIGHT AIR DEVELOPMENT CENTER WRIGHT-PATTERSON AFB OH Personal Author: Rothwell, Walter S. Sperry, Edward G. Report Date: September 01, 1952 Media: 21 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 400358 From the collection: Technical 16. | Full Text pdf - 2 MB Title: Biomedical Re of Aircrew Weight as a Risk Factor in CT 133 and CT 114 Ejections: 1970 - 1998 AD Number: ADA385589 Corporate Author: DEFENCE AND CIVIL INST OF ENVIRONMENTALMEDICINE DOWNS (ONTARIO) Personal Author: Wright, H. L. Salisbury, D. A. Bateman, W. A. Report Date: August 15, 2000 Media: 35 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 406986 From the collection: Technical Report 17. | Full Text pdf - 4 MB Title: Analysis of Incidents of Crew Ejection from Selected U.S. Tactical Fighter Aircraft AD Number: ADA372970 Corporate Author: INSTITUTE FOR DEFENSE ANALYSES ALEXANDRIA VA Personal Author: Schwartz, Joshua A. Woolsey, James P. Nelson, J. Richard Report Date: November 01, 1999 Media: 94 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 179350 From the collection: Technical 18. | Full Text pdf - 1 MB Title: Dynamic Strength Capabilities of Small Stature Females to Eject and Support Added Head Weight. AD Number: ADA367876 Corporate Author: NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD Personal Author: Shender, Barry Heffner, Peggy Report Date: August 03, 1999 Media: 37 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 424295 From the collection: Technical 19. | Full Text pdf - 595 KB Title: USN/USMC Ejection Seat Equipped Aircraft Anthropometric Accommodation AD Number: ADA377912 Corporate Author: NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD Personal Author: Kennedy, Greg Report Date: January 01, 1999 Media: 14 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 424295 From the collection: Technical 20. | Full Text pdf - 536 KB Title: The Use of Ejection Simulation in Mishap Investigations AD Number: ADA368764 Corporate Author: NAVAL AIR WARFARE CENTER AIRCRAFT DIV PATUXENT RIVER MD Personal Author: Nichols, Jeffrey P. Report Date: September 10, 1998 Media: 9 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 424295 From the collection: Technical 21. | Full Text pdf - 6 MB Title: +GZ Impact Tests of the Large JPATS Manikin in a Simulated Martin-Baker Ejection Seat. AD Number: ADA344944 Corporate Author: ARMSTRONG LAB WRIGHT-PATTERSON AFB OH BIODYNAMICS AND BIOCOMMUNICATIONS DIV Personal Author: Buhrman, John R. Report Date: October 01, 1997 Media: 179 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 423430 From the collection: Technical 22. | Full Text pdf - 3 MB Title: Small Aircrew Ejection Simulation in U.S. Navy Aircraft. AD Number: ADA311652 Corporate Author: NAVAL AIR WARFARE CENTER AIRCRAFT DIV WARMINSTER PA Personal Author: Nichols, Jeffrey P. Quartuccio, John J. Marquette, Thomas J. Report Date: January 01, 1996 Media: 79 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 424688 From the collection: Technical 23. | Full Text pdf - 318 KB Title: Development and Testing of a New Reefing System to Reduce Parachute Opening Shock Characteristics During Seat Ejection AD Number: ADA395743 Corporate Author: SYSTEMS RESEARCH LABS INC DAYTON OH Personal Author: Brinkman, John C. Report Date: November 01, 1992 Media: 7 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 340400 From the collection: Technical 24. | Full Text pdf - 1 MB Title: Tight Ribbon Arm Protection (TRAP) for Aircrewman Ejection AD Number: ADA150464 Corporate Author: NAVAL AIR DEVELOPMENT CENTER WARMINSTERPA AIRCRAFT AND CREW SYSTEMS TECHNOLOGY DIRECTORATE Personal Author: Lorch, Dan Schultz, Michael Report Date: July 01, 1984 Media: 25 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 393532 From the collection: Technical 25. | Full Text pdf - 825 KB Title: Development of a Supported Airbag Ejection Restraint (SABER) for Windblast Protection AD Number: ADA109807 Corporate Author: NAVAL AIR DEVELOPMENT CENTER WARMINSTERPA AIRCRAFT AND CREW SYSTEMS TECHNOLOGY DIRECTORATE Personal Author: Lorch, Dan Report Date: November 04, 1981 Media: 21 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 393532 From the collection: Technical 26. | Full Text pdf - 1 MB Title: Simulation of the Motion of the Center of Mass of an Occupant under Ejection Accelerations AD Number: ADA113806 Corporate Author: NAVAL AIR DEVELOPMENT CENTER WARMINSTERPA AIRCRAFT AND CREW SYSTEMS TECHNOLOGY DIRECTORATE Personal Author: D'Aulerio, Louis A. Frisch, Georg D. Report Date: September 01, 1981 Media: 45 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 393532 From the collection: Technical 27. | Full Text pdf - 422 KB Title: Non-Fatal Ejection Vertebral Fracture and its Prevention AD Number: ADA395716 Corporate Author: NAVAL AEROSPACE MEDICAL RESEARCH LAB DETACHMENT MICHOUD NEW ORLEANS LA Personal Author: Ewing, Channing L. Report Date: January 01, 1972 Media: 8 Pages(s) Distribution Code: 01 - APPROVED FOR PUBLIC RELEASE Report Classification: (Not Available). Source Code: 391221 From the collection: Technical

Download or read book Seventh Copper Mountain Conference on Multigrid Methods written by N. Duane Melson and published by . This book was released on 1996 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Scientific and Technical Aerospace Reports written by and published by . This book was released on 1989 with total page 1148 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Looking for O N Navier Stokes Solutions on Non structured Meshes written by Institute for Computer Applications in Science and Engineering and published by . This book was released on 1993 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multigrid methods are good candidates for the resolution of the system arising in Numerical Fluid Dynamics. However, the question is to know if those algorithms which are efficient for the Poisson equation on structured meshes will still apply well to the Euler and Navier-Stokes equations on unstructured meshes. The study of elliptic problems leads us to define the conditions where a Full Multigrid-strategy has O(N) complexity. The aim of this paper is to build a comparison between the elliptic theory and practical CFD problems. First, as an introduction, we will recall some basic definitions and theorems applied to a model problem. The goal of this section is to point out the different properties that we need to produce an FMG algorithm with O(N) complexity. Then, we will show how we can apply this theory to the fluid dynamics equations such as Euler and Navier-Stokes equations. At last, we present some results which are 2nd-order accurate and some explanations about the behaviour of the FMG process ... Unstructured, Multigrid, Non-linear, Euler/Navier-Stokes, Steady equations, FMG, O(N) Complexity.

Download or read book Cities and Their Vital Systems written by Advisory Committee on Technology and Society and published by National Academies Press. This book was released on 1989 with total page 1298 pages. Available in PDF, EPUB and Kindle. Book excerpt: Cities and Their Vital Systems asks basic questions about the longevity, utility, and nature of urban infrastructures; analyzes how they grow, interact, and change; and asks how, when, and at what cost they should be replaced. Among the topics discussed are problems arising from increasing air travel and airport congestion; the adequacy of water supplies and waste treatment; the impact of new technologies on construction; urban real estate values; and the field of "telematics," the combination of computers and telecommunications that makes money machines and national newspapers possible.

Download or read book Monthly Catalogue United States Public Documents written by and published by . This book was released on 1993 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt: