3 edition of **High-order centered difference methods with sharp shock resolution** found in the catalog.

High-order centered difference methods with sharp shock resolution

Gustafsson, Bertil

- 71 Want to read
- 8 Currently reading

Published
**1994** by Research Institute for Advanced Computer Science, NASA Ames Research Center, National Technical Information Service, distributor in [Moffett Field, Calif.], [Springfield, Va .

Written in English

- Cauchy problem.,
- Conservation laws.,
- Finite difference theory.,
- Hyperbolic differential equations.,
- Shock waves.

**Edition Notes**

Other titles | High order centered difference methods with sharp shock resolution. |

Statement | Bertil Gustafsson and Pelle Olsson. |

Series | NASA contractor report -- NASA CR-196374., RIACS technical report -- 94.07., RIACS technical report -- TR 94-7. |

Contributions | Olsson, Pelle., Research Institute for Advanced Computer Science (U.S.) |

The Physical Object | |
---|---|

Format | Microform |

Pagination | 1 v. |

ID Numbers | |

Open Library | OL18073827M |

The difference in shock resolution between the various methods varies slightly from one Riemann problem to the other, but the overall accuracy is very similar. For the one-dimensional case, the relative efficiency in terms of operation count for . A consequence is that it is often difficult to find practical guidelines for applying the methods. In contrast, this book has the modest goals of summarizing underlying physics and describing methods that are easy to use. To achieve a manageable length, many topics are not covered, including moment methods and high order finite-elements.

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High-order centered difference methods with sharp shock resolution Article (PDF Available) in Journal of Scientific Computing 11(3) August with 9 Reads How we measure 'reads'. High-Order Centered Difference Methods with Sharp Shock Resolution Bertil Gustafsson and Pelle Olsson The Research Institute of Advanced Computer Science is operated by Universities Space Research Association, The American City Building, Suite.

Get this from a library. High-order centered difference methods with sharp shock resolution. High-order centered difference methods with sharp shock resolution book [Bertil Gustafsson; Pelle Olsson; Research Institute for Advanced Computer Science (U.S.)].

High-order centered difference methods with sharp shock resolution. Bertil Gustafsson, Pelle Olsson Pages Vol Issue 3, High-order centered difference methods with sharp shock resolution book ISSN: (Print) High-order centered difference methods with sharp shock resolution.

() High-order centered difference methods with sharp shock resolution. Journal of Scientific Computing() A class of high-order dissipative compact by: () High-order centered difference methods with sharp shock resolution. Journal of Scientific Computing() Calculation of Reynolds stresses in turbulent supersonic by: This work revisits an High-order centered difference methods with sharp shock resolution book that dates back to the early days of scientific computing, the energy method for stability analysis.

It is shown that if the scalar non-linear conservation law $$\frac{\partial u}{\partial t}+\frac{\partial}{\partial x}f(u)=0$$ is approximated by the semi-discrete conservative scheme $$\frac{du_{j}}{dt}+\frac{1}{\Delta x}\left(f_{j+\frac{1}{2}}-f_{j-\frac{1}{2 Cited by: A box scheme for transcritical flow.

High-order centered difference methods with sharp shock resolution frequency can be calculated by using high-order and. In computational fluid dynamics, shock-capturing methods are a class of techniques for computing inviscid flows with shock computation of flow containing shock waves is an extremely difficult task because such flows result in sharp, discontinuous changes in flow variables such as pressure, temperature, density, and velocity across the shock.

For our problem the spatial integration domain is discretized with a mesh resolution corresponding to nodes (fixed grid size). Two values for the convection velocity are examined; V= and In Fig.

1, the evolution in time of the spatial profiles of dimensionless concentration of the reactant (U 1), substrate (U 2), and mutant (U 3) are plotted for V=Cited by: Josef Stricker and Yair Censor and Boris Zakharin Inhomogeneous turbulent field diagnostics by distance-dependent tomographic reconstruction techniques Bertil Gustafsson and Pelle Olsson High-order centered difference.

The favorable effects of high-order accurate methods was early recognized even in several RANS simulations. For example, simulations of delta wing vortical flows, wind tip vortices, and helicopter sensitivity of the numerical solution on grid resolution, and the order of accuracy of the numerical scheme, on the resolution of vortices High-order centered difference methods with sharp shock resolution book by: Publications in Refereed Book Chapters, Proceedings and Lecture Notes.

Cockburn and C.-W. Shu, A new class of non-oscillatory discontinuous Galerkin finite element methods for conservation laws, Proceedings of the 7th International Conference of Finite Element Methods in Flow Problems, UAH Press,pp S. Osher and C.-W. Shu, Recent progress on.

@article{osti_, title = {Towards the ultimate conservative difference scheme. V - A second-order sequel to Godunov's method}, author = {Van Leer, B}, abstractNote = {A method of second-order accuracy is described for integrating the equations of ideal compressible flow.

The method is based on the integral conservation laws and is dissipative, so that it can be used. 3 High-resolution shock-capturing schemes. This is the approach followed by an important subset of shock-capturing methods, the so-called Godunov-type methods (Harten & LaxEinfeldt ).

These methods are written in conservation form and use Riemann solvers to compute approximations to. High-order of accuracy is achieved in two different ways. This high-order method is inspired by the use of similar high-order compact finite differences in multimaterial problems in gases (see Refs.

[ 20 ] and [ 21 ]), where the benefits of high resolution of compact finite differences are significant compared to lower order by: 4.

THE r¢B D0 CONSTRAINT IN MHD CODES The discretized time levels are indexed by superscripts, and the spatial discretization by subscripts. Cell centers are denoted by integer subscripts (e.g., j;k in 2D), while the locations of cell interfaces are denoted by half integers (e.g., j C1=2;k).Occasionally.

High-resolution methods promise to provide greatly enhanced solution methods for Sandia's mainstream shock hydrodynamics and compressible flow applications, and they admit the possibility of a generalized framework for treating multi-physics problems such as the coupled hydrodynamics, electro-magnetics and radiative transport found in Z pinch.

[3 A blending algorithm was later devised by Boris and Book [32] which yields sharp discontinuities without oscillations. Boris and Book suggested that the blending of low-order and high-order fluxes be controlled by a monotonicity constraint.

They. Ravindra Duddu, Luc L. Lavier, Thomas J.R. Hughes and Victor M. Calo, A finite strain Eulerian formulation for compressible and nearly incompressible hyperelasticity using high‐order B‐spline finite elements, International Journal for Numerical Methods in Cited by: High-resolution versions of Godunov's method are developed, in which Riemann problems are solved to determine the local wave structure and limiters are applied to eliminate numerical oscillations.

The methods were orginally designed to capture shock waves accurately, but are also useful tools for studying linear wave-progagation problems. The key components of the methodology are a semi-compact high-order finite-difference scheme that maintains accuracy across the discontinuities and enables sub-wavelength resolution on large domains at a tolerable cost, a nonlocal two-way artificial boundary condition (ABC) that simultaneously facilitates the reflectionless propagation of the Cited by: 9.

In computational fluid dynamics, shock-capturing methods are a class of techniques for computing inviscid flows with shock ation of flow through shock waves is an extremely difficult task because such flows result in sharp, discontinuous changes in flow variables pressure, temperature, density, and velocity across the shock.

ENGLISH MD-DRH ENGLISH Introduction Thank you for purchasing this SHARP product. For the The letters in brackets contained in the model number best performance, read this manual carefully.

It will indicate the colour of the product only. Operation and guide you in operating your SHARP product. 2cd Order Centered & 1st order upwind Discrete grid, f(z j,t) = f j(t) Conservative differencing: 0 (v) = ∂ ∂ + ∂ ∂ z f t f z f f t f j j j Δ − =− ∂ ∂ v j+1/2 +1/2 v j−1/2 −1/2 Std 2cd order centered differencing (okay for smooth regions, phase errors too large for sharp-gradient regions, gives unphysical oscillations.

• Upwind methods can be generalized to higher order and combined with other methods: use high order central schemes for smooth flows-upwind methods in regions with shocks.

Upwind method: A more physical approach to the transport problem. The purpose of this book is to present the basic elements of numerical methods for compressible flows. It is appropriate for advanced undergraduate and graduate students and specialists working in high speed flows.

shock artificial rarefaction contact discontinuity difference obtain solution rarefaction wave The non-oscillatory central difference scheme of Nessyahu and Tadmor, in which the resolution of Riemann problems at the cell interfaces is by-passed thanks to the use of the staggered Lax-Friedrichs scheme, is extended here to a two-step, two-dimensional non-oscillatory centered scheme in finite volume formulation.

Author: Peter K. Moore: Department of Mathematics, Southern Methodist University, Clements Hall, Dyer Street, Dallas, TXUnited StatesCited by: 5.

CFD Optimization for Mesh Adaptation • Monday, 5 June • hrs. The second edition of Computational Fluid Dynamics represents a significant improvement from the first edition.

However, the original idea of including all computational fluid dynamics methods (FDM, FEM, FVM); all mesh generation schemes; and physical applications to turbulence, combustion, acoustics, radiative heat transfer, multiphase flow, electromagnetic flow, and.

Fig. Schematic view of a shallow water flow, definition of the variables, reconstruction and flux computation for the CN, BH, and HW schemes: (a) the conserved variables U are discretized as cell averages U ¯ j, bathymetry function B is discretized at cell centers B j, k for the CN and BH schemes and at cell interface midpoints B j − 1 2, k and B.

A type of high-order shock-capturing schemes that can be in explicit or spatially implicit form is developed to achieve this goal with localized dissipation nonlinear weighting technique.

The scheme has the ability to preserve fine-scale features in smooth regions with minimal dissipation while still has the ability to provide sufficient. Finite element methods for flow problems Jean Donea, Antonio Huerta In recent years there have been significant developments in the development of stable and accurate finite element procedures for the numerical approximation of a wide range of fluid mechanics problems.

S.K. Godunov's theorem. In numerical analysis and computational fluid dynamics, Godunov's theorem — also known as Godunov's order barrier theorem — is a mathematical theorem important in the development of the theory of high resolution schemes for the numerical solution of partial differential equations.

The theorem states that: Linear numerical schemes for solving. Full text of "Advanced Computational Methods In Science And Engineering" See other formats. Mathematics of Computation Vol NumberJanuary, Huo-Yuan Duan and Guo-Ping Liang Nonconforming elements in least-squares mixed finite element methods Jianguo Huang Numerical solution of the elastic body-plate problem by nonoverlapping domain decomposition type techniques.

Implicit Time Marching Methods for Large-Scale High-Accuracy Simulations of Compressible Flows. Yongle Du and; Shock Boundary Layer Interaction I • Monday, 4 January • hrs Implementation of a Wall-Modeled Sharp Immersed Boundary Method in a High-Order Large Eddy Simulation Tool for Jet Aeroacoustics.

Nitin S. Dhamankar. The Center for Research in Mathematical Engineering (CI²MA) of the Universidad de Concepción, Concepción, Chile, is organizing the Sixth Chilean Workshop on Numerical Analysis of Partial Differential Equations (WONAPDE ), to be held on January 54 (B) (C) Figure 2 1 The base flow produced by a spherical shock tube with marked locations of the primary shock (PS), secondary shock (SS) and contact interface (CI) The radial dependence of A) pressure, B) radial velocity, and C) density of the base flow at 4 different non dimensional times.

Deprecated: Function create_function() is deprecated in /www/wwwroot/ on line Deprecated: Function create_function() is deprecated.He earned Ph.D. in Aerospace Engineering and Scientific Computing at the University of Michigan inworked as a postdoctoral fellow on adaptive grid methods, local preconditioning methods, multigrid methods, rotated-hybrid Riemann solvers, high-order upwind and viscous schemes, etc., and joined NIA in A method of selecting grid size to account for Hertz deformation in finite element analysis of spur ebook.

NASA Ebook Reports Server (NTRS) Coy, J. J.; Chao, C. H. C. A method of selecting grid size for the finite element analysis of gear tooth deflection is presented. The method is based on a finite element study of two cylinders in line contact.