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4 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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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 LibraryOL17583583M
    OCLC/WorldCa42212582

    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 Paper , January Mavriplis, D.J., “Unstructured Mesh Discretizations and Solvers for Computational Aerodynamics,” AIAA Paper –, June


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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: