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Friday, May 15, 2020 | History

4 edition of Multigrid approach to incompressible viscous cavity flows found in the catalog.

Multigrid approach to incompressible viscous cavity flows

William A. Wood

Multigrid approach to incompressible viscous cavity flows

by William A. Wood

  • 265 Want to read
  • 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:
  • Viscous flow,
  • Cavities,
  • Two dimensional flow,
  • Computation

  • Edition Notes

    StatementW.A. Wood.
    SeriesNASA technical memorandum -- 110262.
    ContributionsLangley Research Center.
    The Physical Object
    FormatMicroform
    Pagination1 v.
    ID Numbers
    Open LibraryOL17838755M
    OCLC/WorldCa41033683

    The development and validation of a parallel unstructured non-nested multigrid method for simulation of unsteady incompressible viscous flow is presented. The Navier-Stokes solver is based on the artificial compressibility method (ACM) [10] and a higher-order characteristics-based finite-volume scheme [8] on unstructured forabetterchicago.com: Yong Zhao, Chin Hoe Tai. Galerkin coarse grid approximation (GCA) in multigrid methods is investigated for the incompressible Navier–Stokes equations in general coordinates. An efficient algorithm performing GCA is presented. The behavior of coarse grid matrices is studied under GCA with different transfer operators. For square and L-shaped driven cavity problems, the performance of the multigrid method using Cited by:

    Among the topics discussed are a novel three-dimensional vortex method, unsteady viscous flow around circular cylinders and airfoils, a time-accurate multiple grid algorithm, the numerical solution of incompressible flows by a marching multigrid nonlinear method, the Navier-Stokes solution for hypersonic flow over an indented nosetip, graphics and flow visualization in computational fluid. May 17,  · Books. AIAA Education Series; Library of Flight; Volume 36, Issue 3. No Access. Efficient Computation of Unsteady Viscous Flows by an Implicit Preconditioned Multigrid Method. A Stable Unstructured Finite Volume Method with Multigrid for Parallel Large-Scale Incompressible Viscous Fluid Flow forabetterchicago.com by:

    Note: Citations are based on reference standards. However, formatting rules can vary widely between applications and fields of interest or study. The specific requirements or preferences of your reviewing publisher, classroom teacher, institution or organization should be applied. Mar 11,  · This paper presents results of investigations of unsteady incompressible flow past three-dimensional cavities, where there is a complex interaction between the external flow and the recirculating flow inside the cavity. A computational fluid dynamics approach is used in the forabetterchicago.com by:


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Multigrid approach to incompressible viscous cavity flows by William A. Wood Download PDF EPUB FB2

Multigrid Approach to Incompressible Viscous Cavity Flows. \Villiam A. Wood,* A\4,S'A Langh:y Research Center, Hampton, 1'_4 Two-dimensional incompressible viscous driven-cavity flows are computed for Reynolds numbers on tile range 20, using a loosely coupled, implicit, second-order centrally-differenced scheme.

CiteSeerX - Document Details (Isaac Councill, Lee Giles, Pradeep Teregowda): > convergence tolerance i vorticity x \Deltat = 2\Deltax y \Deltat = 2\Deltay ¯ viscosity ae density (constant for incompressible flow) oe x \Deltat = R e \Deltax 2 oe y \Deltat = R e \Deltay 2 / stream function Aerospace Technologist, Aerothermodynamics Branch, Gas Dynamics Division.

Get this from a library. Multigrid approach to incompressible viscous cavity flows. [William A Wood; Langley Research Center.]. Multigrid Approach to Incompressible Viscous Cavity Flows.

By William A. Wood. Abstract. > convergence tolerance i vorticity x \Deltat = 2\Deltax y \Deltat = 2\Deltay ¯ viscosity ae density (constant for incompressible flow) oe x \Deltat = R e \Deltax 2 oe y \Deltat = R e \Deltay 2 / stream function Aerospace Technologist Author: William A.

Wood. Multigrid Approach to Incompressible Viscous Cavity Flows. achieving reductions in solution times by more than 60 percent with the full multigrid approach.

Details of the circulation patterns are investigated in cavities of 2-to-1, 1-to-1, and 1-to-2 depth to width ratiosAuthor: William A. Wood. We describe a multigrid scheme for solving the viscous incompressible driven cavity prol)lem that has been parallelize(l using OpenMP. The incremental parallelization allowed t)y OpenMP was of great hell) during the parallelization process.

The parallel-multigrid code is used to simulate both steady and unsteady incompressible viscous flows over a circular cylinder and a lid-driven cavity flow.

A maximum speedup of could be achieved on 32 processors, for instance, the lid-driven cavity flow of Re  = Cited by: Application of a GEI method to the analysis of steady flows in a square cavity, has indicated that it is more efficient on a vector computer than other conventional iterative methods.

On the other hand, as an approach to the efficient analysis of unsteady problems on supercomputers, the parabolic multi-grid Cited by: 3. Discretization of viscous incompressible and viscous low Mach number flows often leads to a system of equations which is difficult to solve.

This has two reasons: first, high aspect ratio grids result in a numerically-anisotropic behaviour of the diffusive and acoustic terms and second, especially in low Mach number flow, the ratio of the Author: Jan Vierendeels, Kristiaan Riemslagh, Erik Dick.

Abstract. In this paper, an efficient multigrid fictitious boundary method (MFBM) coupled with the FEM solver package FEATFLOW was used for the detailed simulation of incompressible viscous flows around one or more moving NACA forabetterchicago.com: Wan De-Cheng. Numerical Simulation of 3-D Incompressible Unsteady Viscous Laminar Flows Velocity-Vorticity Simulation of Unsteady 3-D Viscous Flow within a Driven Cavity.

Multigrid and ADI techniques to solve unsteady 3D viscous flow in velocity-vorticity formulation. Pages A multigrid pseudo-spectral method for incompressible Navier–Stokes flows by a buoyancy driven cavity flow as a standard benchmark case.

numerical solution of viscous incompressible flow. The parallel codes using single grid and multigrid are used to simulate steady and unsteady incompressible viscous flows for a 3D Hd-driven cavity flow for validation and performance evaluation purposes. The parallel results obtained agree well with those of serial solvers and with numerical solutions obtained by other researchers, Author: Chin Hoe Tai, Yong Zhao, K.M.

Liew. Numerical Simulation of 3-D Incompressible Unsteady Viscous Laminar Flows Search within book. Front Matter. Pages i-vii. PDF. Velocity-Vorticity Simulation of Unsteady 3-D Viscous Flow within a Driven Cavity.

Huang, U. Ghia, G. Osswald, K. Ghia. Pages May 26,  · Multigrid solvers for steady Navier-Stokes equations in a driven cavity. Abstract.

This work is devoted to solving steady Navier-Stokes equations in primitive variables in a 2D driven cavity. Two new robust upwind schemes are presented to approach the convection forabetterchicago.com by: 2. A highly efficient numerical approach based on multigrid and preconditioning methods is developed for modeling 3D steady and time-dependent incompressible flows.

Thek-ω turbulence model is used to estimate the effects of turbulence. The model equations are solved together with the N-S equations in a strongly coupled way, and acceleration techniques like the multigrid method are also used for the Cited by: The number of publications dedicated to the wall-driven incompressible viscous flow problem in a square cavity is so large that giving a comprehensive subset of the related references has become an impossible task; focusing on what we know best let us mention,, (many of the various references therein are also worth consulting).Cited by: In this paper, a simple Cartesian ghost-cell multigrid Poisson solver is proposed for simulating incompressible fluid flows.

The flow field is discretized efficiently on a rectangular mesh, in. A multigrid pseudospectral method for steady flow computation Article in International Journal for Numerical Methods in Fluids 43(1) - 42 · September with 12 Reads How we measure 'reads'.

Chunlei Liang, Andre Chan, Xiang Liu, Antony Jameson. An Artificial Compressibility Method for the Spectral Difference Solution of Unsteady Incompressible Navier-Stokes Equations on Multiple Grids. 49th AIAA Aerospace Sciences Meeting including the New Horizons Forum and Aerospace forabetterchicago.com by:.

A simple, efficient, and robust numerical technique is provided for solving two dimensional incompressible steady viscous flows at moderate to high Reynolds numbers.

The proposed approach employs an incremental multigrid method and an extrapolation procedure based on minimum residual concepts to accelerate the convergence rate of a robust block-line-Gauss-Seidel solver for the .The multigrid - adaptive local refinement algorithm is tested on 2DP oisson equation and further is applied to a lid-driven flow in a square cavity, comparing the results with a bench-mark solution.The solution of the incompressible Navier-Stokes equations in general two- and three-dimensional domains using a multigrid method is considered.

Because a great variety of boundary-fitted grids.