Proceedings ArticleDOI
Recent enhancements to OVERFLOW
TLDR
The purpose of this paper is to highlight some recent enhancements that have been made to the Navier-Stokes code OVERFLOW, in three major areas: a multigrid method, for convergence acceleration; a lowMach preconditioning algorithm, for converge acceleration and solution quality improvement for low Mach number flows; and a matrix dissipation algorithm for solution quality improved.Abstract:
The purpose of this paper is to highlight some recent enhancements that have been made to the Navier-Stokes code OVERFLOW. The enhancements we are concerned with are in three major areas: a multigrid method, for convergence acceleration; a lowMach preconditioning algorithm, for convergence acceleration and solution quality improvement for low Mach number flows; and a matrix dissipation algorithm for solution quality improvement. We will describe these methods and show examples of their efficacy.read more
Citations
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Journal ArticleDOI
A composite grid solver for conjugate heat transfer in fluid-structure systems
William D. Henshaw,Kyle Chand +1 more
TL;DR: This approach to conjugate heat transfer can be used to compute transient and steady state solutions to a wide range of fluid-solid systems in complex two- and three-dimensional geometry.
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An assessment of linear versus non-linear multigrid methods for unstructured mesh solvers
TL;DR: In this article, the relative performance of a nonlinear full approximation storage multigrid algorithm and an equivalent linear multi-rigid algorithm for solving two different nonlinear problems is investigated.
Journal ArticleDOI
Experimental Analysis of Thick Blunt Trailing-Edge Wind Turbine Airfoils
TL;DR: In this paper, an experimental investigation of blunt trailing-edge orflatback airfoils was conducted in the University of California, Davis aeronautical wind tunnel, where each airfoil was tested under free and fixed boundary layer transition flow conditions at Reynolds numbers of 333,000 and 666,000.
Proceedings ArticleDOI
Thirty Years of Development and Application of CFD at Boeing Commercial Airplanes, Seattle
TL;DR: A chronology and issues related to the acquisition, development, and use of Computational Fluid Dynamics (CFD) at Boeing Commercial Airplanes in Seattle can be found in this paper.
Journal ArticleDOI
Parallel computation of three-dimensional flows using overlapping grids with adaptive mesh refinement
TL;DR: The parallel time-stepping algorithm is illustrated for initial-boundary-value problems involving a linear advection-diffusion equation and the (nonlinear) reactive Euler equations and the accuracy of the numerical solutions is assessed quantitatively through an estimation of the errors from a grid convergence study.
References
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Book
An Introduction to Multigrid Methods
TL;DR: These notes were written for an introductory course on the application of multigrid methods to elliptic and hyperbolic partial differential equations for engineers, physicists and applied mathematicians, restricting ourselves to finite volume and finite difference discretization.
Journal ArticleDOI
A diagonal form of an implicit approximate-factorization algorithm
Thomas H. Pulliam,D.S Chaussee +1 more
TL;DR: The modification transforms the coupled system of equations into an uncoupled diagonal form that requires less computational work and has an important effect on the application of implicit finite-difference schemes to vector processors.
Journal ArticleDOI
Preconditioned methods for solving the incompressible low speed compressible equations
TL;DR: It is sown that the resultant incompressible equations form a symmetric hyperbolic system and so are well posed, and several generalizations to the compressible equations are presented which extend previous results.
Proceedings ArticleDOI
A 3-D Chimera Grid Embedding Technique
TL;DR: A three-dimensional (3-D) chimera grid-embedding technique that simplifies the construction of computational grids about complex geometries by solution of the Euler equations for the transonic flow about a wing/body, wing/ body/tail, and a configuration of three ellipsoidal bodies is described.