Development Of A Time Dependent Incompressible Navier Stokes Solver Based On A Fractional Step Method PDF Download
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Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 26 |
Release | : 2018-07-02 |
Genre | : |
ISBN | : 9781722161941 |
Download Development of a Time-Dependent Incompressible Navier-Stokes Solver Based on a Fractional-Step Method Book in PDF, ePub and Kindle
The development, validation and application of a fractional step solution method of the time-dependent incompressible Navier-Stokes equations in generalized coordinate systems are discussed. A solution method that combines a finite-volume discretization with a novel choice of the dependent variables and a fractional step splitting to obtain accurate solutions in arbitrary geometries was previously developed for fixed-grids. In the present research effort, this solution method is extended to include more general situations, including cases with moving grids. The numerical techniques are enhanced to gain efficiency and generality. Rosenfeld, Moshe Unspecified Center NCC2-562...
Author | : National Aeronautics and Space Administration (NASA) |
Publisher | : Createspace Independent Publishing Platform |
Total Pages | : 68 |
Release | : 2018-07-06 |
Genre | : |
ISBN | : 9781722347949 |
Download Development of a Fractional-Step Method for the Unsteady Incompressible Navier-Stokes Equations in Generalized Coordinate Systems Book in PDF, ePub and Kindle
A fractional step method is developed for solving the time-dependent three-dimensional incompressible Navier-Stokes equations in generalized coordinate systems. The primitive variable formulation uses the pressure, defined at the center of the computational cell, and the volume fluxes across the faces of the cells as the dependent variables, instead of the Cartesian components of the velocity. This choice is equivalent to using the contravariant velocity components in a staggered grid multiplied by the volume of the computational cell. The governing equations are discretized by finite volumes using a staggered mesh system. The solution of the continuity equation is decoupled from the momentum equations by a fractional step method which enforces mass conservation by solving a Poisson equation. This procedure, combined with the consistent approximations of the geometric quantities, is done to satisfy the discretized mass conservation equation to machine accuracy, as well as to gain the favorable convergence properties of the Poisson solver. The momentum equations are solved by an approximate factorization method, and a novel ZEBRA scheme with four-color ordering is devised for the efficient solution of the Poisson equation. Several two- and three-dimensional laminar test cases are computed and compared with other numerical and experimental results to validate the solution method. Good agreement is obtained in all cases. Rosenfeld, Moshe and Kwak, Dochan and Vinokur, Marcel Ames Research Center...
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Total Pages | : 70 |
Release | : 1992 |
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Download Development of a Fractional-step Method for the Unsteady Incompressible Navier-Stokes Equations in Generalized Coordinate Systems Book in PDF, ePub and Kindle
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Total Pages | : 40 |
Release | : 1984 |
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Download Application of a Fractional-step Method to Incompressible Navier-Stokes Equation Book in PDF, ePub and Kindle
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Total Pages | : 702 |
Release | : 1995 |
Genre | : Aeronautics |
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Download Scientific and Technical Aerospace Reports Book in PDF, ePub and Kindle
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Release | : 1994 |
Genre | : Government publications |
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Download Monthly Catalog of United States Government Publications Book in PDF, ePub and Kindle
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Total Pages | : 1638 |
Release | : 1995 |
Genre | : Government publications |
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Download Monthly Catalogue, United States Public Documents Book in PDF, ePub and Kindle
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Total Pages | : 1832 |
Release | : 1993 |
Genre | : Government reports announcements & index |
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Author | : D. Dijkstra |
Publisher | : Springer Science & Business Media |
Total Pages | : 251 |
Release | : 2013-04-17 |
Genre | : Technology & Engineering |
ISBN | : 9401715645 |
Download Floating, Flowing, Flying Book in PDF, ePub and Kindle
This book is dedicated to Pieter J. Zandbergen on the occasion of his sixty-fifth birthday. It contains fourteen original contributions written by specialized authors and deals with the application of mathematics and numerical analysis to a wide variety of problems in fluid dynamics and related fields. At present the research field of computational fluid dynamics is growing strongly and the book is therefore of interest to applied mathematicians, theoretical physicists and engineers.
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Total Pages | : 390 |
Release | : 1994 |
Genre | : Mechanics, Applied |
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