Proceedings ArticleDOI
Recent enhancements to OVERFLOW
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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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Of a 747 high lift configuration
TL;DR: In this paper, three-dimensional Navier-Stokes solutions obtained using the OVERFLOW code for a 747PD high lift configuration are presented, and the chimera grid methodology used in generating the 747PD grid system is described.
Proceedings ArticleDOI
Simulation of a Quadrotor Urban Air Taxi Hovering Above a Rooftop Edge
TL;DR: In this article , high-and medium-fidelity blade-resolved overflow simulations and vortex particle-mesh simulations that capture the aerodynamics of a rotorcraft in full and partial ground effect are compared to verify the consistency of the models.
Posted Content
Development and Preliminary Assessment of the Open-Source CFD toolkit SU2 for Rotorcraft Flows
TL;DR: In this paper, the SU2 code is used for rotor performance prediction in both hover and forward flight using simulation specific parameters which have a significant influence on the solution, and the prediction capabilities of the solver in terms of rotor performance are demonstrated.
Proceedings ArticleDOI
Shuttle Return-to-Flight IH-108 Aerothermal Test at CUBRC - Flow Field Calibration and CFD
Kei Yun Lau,Michael Holden +1 more
TL;DR: In this article, the authors discuss one specific aspect of the Shuttle Retrun-To-Flight IH-108 Aerothermal Test at CUBRC, the test flow field calibration.
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.