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3 edition of Three-dimensional high-lift analysis using a parallel unstructured multigrid solver found in the catalog.

Three-dimensional high-lift analysis using a parallel unstructured multigrid solver

Three-dimensional high-lift analysis using a parallel unstructured multigrid solver

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  • 36 Currently reading

Published by National Aeronautics and Space Administration, Langley Research Center, National Technical Information Service, distributor in Hampton, Va, [Springfield, Va .
Written in English

    Subjects:
  • Three dimensional models.,
  • Algorithms.,
  • Computational fluid dynamics.,
  • Massively parallel processors.

  • Edition Notes

    Other titlesThree dimensional high lift analysis using a parallel unstructured multigrid solver
    StatementDimitri J. Mavriplis.
    SeriesICASE report -- no. 98-20, [NASA contractor report] -- NASA/CR-1998-207682, NASA contractor report -- NASA CR-207682.
    ContributionsLangley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17133678M

    A. McAdams, E. Sifakis, J. Teran, A Parallel Multigrid Poisson Solver for Fluids Simulation on Large Grids, ACM SIGGRAPH/Eurographics Symposium on Computer Animation. Drag prediction validation of a multi-dimensional upwind solver, Ir. K. Sermeus, von Karman Institute for Fluid Dynamics, Belgium Friday 7 November Designing high-lift systems for low drag, Dr. U. Herrmann, DLR Braunschweig, Germany Drag analysis using unstructured mesh solvers (Part 2), Dr. D. Mavriplis. M.S. Campobasso, B. Carpentieri, Parallel Unstructured ThreeDimensional Turbulent Flow Analyses using Efficiently Preconditioned Newton-Krylov solver, AIAA paper , presented at the 19th AIAA Computational Fluid Dynamics Conference, 22ndth June , San Antonio, Texas, USA. Modeling of the Scale of Separations in Cockpit Displays for Limited Delegation of Separation Assurance.

    This book covers a wide area of topics, from fundamental theories to industrial applications. It serves as a useful reference for everyone interested in computational modeling of partial differential equations pertinent primarily to aeronautical applications. The reader will find three survey.


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Three-dimensional high-lift analysis using a parallel unstructured multigrid solver Download PDF EPUB FB2

THREE-DIMENSIONAL HIGH-LIFT ANALYSIS USING A PARALLEL UNSTRUCTURED MULTIGRID SOLVER DIMITRI J. MAVRIPLIS * Abstract. A directional implicit unstructured agglomeration multigrid solver is ported to shared and dis- tributed memory massively parallel machines using the explicit domain-decomposition and message-passing approach.

A Reynolds-averaged Navier-Stokes solver based on unstructured mesh techniques for analysis of high-lift configurations is described. The method makes use of an agglomeration multigrid solver for convergence accelera-tion.

Directional agglomeration and implicit line-smooth-ing is employed to relieve the stiffness associated with highly stretched meshes.

Get this from a library. Three-dimensional high-lift analysis using a parallel unstructured multigrid solver. [Dimitri Mavriplis; Langley Research Center.]. The feasibility of performing large-scale unstructured grid calculations with the parallel multigrid algorithm is demonstrated by computing the flow over a partial-span flap wing high-lift geometry on a highly resolved grid of million points in approximately 4 hours of wall clock time on the CRAY T3EAuthor: Dimitri J.

Mavriplis. Parallel multigrid solvers for 3D unstructured finite element problems in large deformation elasticity and plasticity. Mark F. Adams. Corresponding Author. E-mail address: [email protected] Cited by: Three-dimensional high-lift analysis using a parallel, unstructured multigrid solver.

Mavriplis; 16th AIAA Applied Aerodynamics Conference August Applications of grid partitioning and parallel dynamic load by: D. Mavrpiplis: ‘Three-Dimensional High-Lift Analysis Using a Parallel Unstructured Multigrid Solver’, NASA/CR, ICASE Report No.

() Google Scholar 4. Sharov and K. Nakahashi: ‘Reordering of Hybrid Unstructured Grids for Cited by: 2. CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): A complete “geometry to drag-polar” analysis capability for three-dimensional high-lift configurations is described.

The approach is based on the use of unstructured meshes in order to enable rapid turnaround for complicated geometries that arise in high-lift configurations.

This is an excellent book on multigrid methods, written by three experts, with contributions from three others, including the father of multigrid, Achi Brandt. The book can be used by graduate students with knowledge of differential equations and the fundamentals of numerical.

McAdams et al. / A parallel multigrid Poisson solver for fluids simulation on large grids ample, [MCP09,KFCO06,FOK05,ETK07] use conform-ing tetrahedralizations to accurately enforce boundary con-ditions, [LGF04] uses adaptive octree-based discretization, and [CFL07] makes use of tetrahedralized volumes for free surface Size: 2MB.

Parallel Performance Investigations of an Unstructured Mesh Navier-Stokes Solver 12 September | The International Journal of High Performance Computing Applications, Vol. 16, No. 4 The aerodynamic design of multi-element high-lift systems for transport airplanesCited by: Large-Scale Parallel Unstructured Mesh Computations for 3D High-Lift Analysis.

By D. Mavriplis and S. Pirzadeh. Abstract. A complete "geometry to drag-polar" analysis capability for three-dimensional high-lift configurations is described. The approach is based on the use of unstructured meshes in order to enable rapid turnaround for Author: D.

Mavriplis and S. Pirzadeh. The feasibility of performing large-scale unstructured grid calculations with the parallel multigrid algorithm is demonstrated by computing the flow over a partial-span flap wing high-lift.

The use of fluid dynamics codes with unstructured grids continues to grow in popularity. This is particularly true for fluid applications that do not involve strong separation or turbulence or where the viscous/inviscid interaction is weak.

In these cases the Navier-Stokes equations can be reduced to the Euler equations. For many practical applications, the flow of air over an aircraft can be. A parallel software-platform for solving problems of partial differential equations using unstructured grids and adaptive multigrid methods, in W.

Jäger and E. Krause, editor: High performance computing in science and engineering, pages – Springer, Cited by: The approach developed in this work is based on an existing steady-state unstructured mesh solver which relies on agglomeration multigrid for rapid convergence and has been shown to scale well on.

An efficient parallel/unstructured-multigrid preconditioned implicit method for simulating 3D unsteady compressible flows with moving objects X. Lv a, Y. Zhao a,*, X.Y.

Huang a, G.H. Xia a, Z.J. Wang b a School of Mechanical and Aerospace Engineering, College of Engineering, Nanyang Technological University, SingaporeSingapore b Department of Aerospace Engineering, College of. The multigrid techniques described here are based on the fact that an iterative process reduces high frequency components efficiently whereas low frequency components are hardly affected.

As a result a coarse grid can be used to obtain an efficient solver. This is the standard scheme. The multigrid principle is much more general. Mavriplis, “Three-dimension high-lift analysis using a parallel unstructured multigrid solver,” Tech.

Rep. TR, ICASE, View at: Google Scholar P. Leyland and R. Richter, “Completely parallel compressible flow simulations using adaptive unstructured meshes,” Computer Methods in Applied Mechanics and Engineering, vol.no. 2–4, pp. –, Cited by: 2. Dolean V and Lanteri S () Parallel multigrid methods for the calculation of unsteady flows on unstructured grids, Parallel Computing,(), Online publication date: 1-Apr Silva J and Silveira L Issues in parallelizing multigrid-based substrate model extraction and analysis Proceedings of the 17th symposium on Integrated.

Dimitri J. Mavriplis, in Parallel Computational Fluid Dynamics2 BASE SOLVER. The Reynolds averaged Navier-Stokes equations are discretized by a finite-volume technique on meshes of mixed element types which may include tetrahedra, pyramids, prisms, and general, prismatic elements are used in the boundary layer and wake regions, while tetrahedra are used in the.

A different way to improve the performance of the parallel multigrid method is to use a scalable solver on the coarsest level. A good candidate for the coarsest level solver is the two-level domain decomposition method because these methods are intrinsically parallel and their required number of iterations does not depend on theAuthor: Kab Seok Kang.

An Evaluation of Parallel Multigrid as a Solver and a Preconditioner for Singularly Perturbed Problems. SIAM Journal on Scientific ComputingMultigrid Preconditioner for Unstructured Nonlinear 3D FE Models. Journal of Engineering MechanicsCited by: CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): A complete "geometry to drag-polar" analysis capability for three-dimensional high-lift configurations is described.

The approach is based on the use of unstructured meshes in order to enable rapid turnaround for complicated geometries that arise in high-lift configurations. Three-dimensional simulation on a parallel computer of supersonic coflowing jets (O. Louedin, J. Ryan).

Navier-Stokes algorithm development within the FAME mesh environment (S.H. Onslow et al.). Partitioning and parallel development of an unstructured, adaptive flow solver on the NEC-SX4 (H. van der Ven, J.J.W.

van der Vegt). Distributed Edition: 1. ow simulations on fully unstructured grids. An agglomerated multigrid solver is applied to a wide range of test problems from simple two-dimensional geometries to realistic three-dimensional con gurations.

The solver is evaluated against a single-grid solver and, in some cases, against a structured-grid multigrid solver. LARGE-SCALE PARALLEL UNSTRUCTURED MESH COMPUTATIONS FOR 3D HIGH-LIFT ANALYSIS DIMITRI J.

MAVRIPLIS AND S. PIRZADEH y Abstract. A complete \geometry to drag-polar" analysis capability for three-dimensional high-lift con- gurations is described.

The approach is based on the use of unstructured meshes in order to enable rapid. Algebraic multigrid (AMG) is a very efficient iterative solver and preconditioner for large unstructured sparse linear systems.

Traditional coarsening schemes for AMG can, however, lead to computational complexity growth as problem size increases, resulting in increased memory use and execution time, and diminished scalability.

Two new parallel AMG coarsening schemes are proposed that are Cited by: LARGE-SCALE PARALLEL UNSTRUCTURED MESH COMPUTATIONS FOR 3D HIGH-LIFT ANALYSIS DIMITRI J. MAVRIPLIS* AND S. PIRZADEH t Abstract.

A complete "geometry to drag-polar" analysis capability for three-dimensional high-lift con-figurations is described. The approach is based on the use of unstructured meshes in order to enable rapidCited by: Multigrid Multigrid is kno wn to b e the optimal solution metho d for the nite di erence P oisson equation in serial; in parallel, the FFT is comp etitiv e with m ultigrid [10].

Ho w ev er, unlik e the FFT, m ultigrid has b een applied to unstructured second order nite elemen t problems in elasticit y [24,9] and plasticit y [15, 19, 23], as w ell. “The Defining Methods of Cobalt A Parallel, Implicit, Unstructured Euler/Navier-Stokes Flow Solver,” AIAA PaperJanuary Mavriplis, D.J., “Unstructured Mesh Discretizations and Solvers for Computational Aerodynamics,” AIAA Paper –, June   Pressure-Based Finite-Volume Methods in Computational Fluid Dynamics S.

Acharya. Acharya. Heat Transfer and Stress Analysis Using Unstructured Moving Meshes With Cells of Arbitrary Topology,” Viscous Flow Analysis Using a Parallel Unstructured Multigrid Solver,”Cited by: Key Words.

multigrid methods, partial di erential equations, time-dependent, three-dimensional, parabolic equations, parallel algorithms, Cray Y-MP, Alliant FX/, shared memory architectures 1.

Introduction. In this paper, we consider the solution of three-dimensional. A Massively Parallel Multigrid Solver using PETSc and Unstructured Meshes on Tier0 Supercomputers (Hugues Digonnet, Institut de Calcul Intensif - École Centrale de Nantes) Today's supercomputers have hundred of thousand cores, hundred of TB of memory and allow us to solve.

Contributed presentations were given by over 50 researchers representing the state of parallel CFD art and architecture from Asia, Europe, and North America. Major developments at the meeting were: (1) the effective use of as many as processors in implicit computations in CFD, (2) the.

Part 1: Multigrid for the diffussion problem Part 2: Extension to the convection problem Part 3: Extension to the incompressible Navier-Stokes equations Algorithmic and Architectural issues of on structured grids Introduction to the Presentation. Algebraic multigrid (AMG) is an attractive choice for solving large linear systems {Lambda}x = b on unstructured grids.

While AMG is applicable as a solver for a variety of problems, its robustness may be enhanced by using it as a preconditioner for Krylov solvers, such as GMRES. The sheer size of. @article{osti_, title = {Segmented domain decomposition multigrid solutions for two and three-dimensional viscous flows}, author = {Srinivasan, K and Rubin, S G}, abstractNote = {Several viscous incompressible two and three-dimensional flows with strong inviscid interaction and/or axial flow reversal are considered with a segmented domain decomposition multigrid (SDDMG) procedure.

massively parallel machines using hundreds of proces-sors.1{3 The goal of this work is to demonstrate a complete \geometry to drag-polar" practical high-lift analysis capability, based on unstructured mesh techniques, using up to 25 million grid points for a full aircraft con.

Purchase Parallel Computational Fluid Dynamics - 1st Edition. Print Book & E-Book. ISBN. Goddeke et al.¨ 15 describe integrating parallel multigrid solvers into an existing finite element solver using mixed precision. This is done in a framework of multiple CPU and GPU solvers, with choices that are made dynamically at each step.

G¨oddeke 25 discusses many aspects of multigrid on GPUs and GPU clusters. Parallel multigrid is.The generation of three‐dimensional unstructured grids using the advancing‐front technique is described. This technique has been shown to be effective for the generation of unstructured grids in two dimensions.

1,2 However, its extension to three‐dimensional regions required algorithms to define the surface and suitable data structures that avoid excessive CPU‐time overheads for the.The method of lines (MOL, NMOL, NUMOL) is a technique for solving partial differential equations (PDEs) in which all but one dimension is discretized.

MOL allows standard, general-purpose methods and software, developed for the numerical integration of ordinary differential equations (ODEs) and differential algebraic equations (DAEs), to be used.

A large number of integration routines have Discipline: Partial differential equations, numerical analysis.