A Highly Accurate Modified Method of Characteristics for Convection-dominated Flow Problems

Verfasser / Beitragende:
Machmoum, Ahmed; Seaïd, Mohammed
Ort, Verlag, Jahr:
2003
Enthalten in:
Computational Methods in Applied Mathematics, 3/4(2003), 623-646
Format:
Artikel (online)
ID: 378875019
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024 7 0 |a 10.2478/cmam-2003-0039  |2 doi 
035 |a (NATIONALLICENCE)gruyter-10.2478/cmam-2003-0039 
245 0 2 |a A Highly Accurate Modified Method of Characteristics for Convection-dominated Flow Problems  |h [Elektronische Daten] 
520 3 |a High-order accurate methods for convection-dominated flow problems have the potential to reduce the computational effort required for a given order of solution accuracy. The state of the art in this field is more advanced for Eulerian methods than for semi-Lagrangian methods. In this paper, we introduce a new higher order approach that is based on combining the modified method of characteristics with the gradients computed during solution reconstruction. Special attention is given to the class of third-order schemes which uses a higher-order method to calculate the departure points and a high-order polynomial reconstruction to interpolate the solution at the characteristic feet. Numerical experiments are carried out on several benchmark transport-diffusion equations including incompressible Navier-Stokes problems. The computed results support our expectations for a robust and high-order accurate method. 
540 |a This article is distributed under the terms of the Creative Commons Attribution Non-Commercial License, which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. 
690 7 |a modified method of characteristics  |2 nationallicence 
690 7 |a higher order advective schemes  |2 nationallicence 
690 7 |a advection-diffusion equations  |2 nationallicence 
690 7 |a incompressible Navier-Stokes problems  |2 nationallicence 
700 1 |a Machmoum  |D Ahmed  |u Facult´e des Sciences, LIMI, Universit´e Ibn Zohr, B.P. 28/S Agadir, Morocco. 
700 1 |a Seaïd  |D Mohammed  |u Fachbereich Mathematik, TU Darmstadt, 64289 Darmstadt, Germany. 
773 0 |t Computational Methods in Applied Mathematics  |d De Gruyter  |g 3/4(2003), 623-646  |x 1609-4840  |q 3:4<623  |1 2003  |2 3  |o cmam 
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950 |B NATIONALLICENCE  |P 700  |E 1-  |a Machmoum  |D Ahmed  |u Facult´e des Sciences, LIMI, Universit´e Ibn Zohr, B.P. 28/S Agadir, Morocco 
950 |B NATIONALLICENCE  |P 700  |E 1-  |a Seaïd  |D Mohammed  |u Fachbereich Mathematik, TU Darmstadt, 64289 Darmstadt, Germany 
950 |B NATIONALLICENCE  |P 773  |E 0-  |t Computational Methods in Applied Mathematics  |d De Gruyter  |g 3/4(2003), 623-646  |x 1609-4840  |q 3:4<623  |1 2003  |2 3  |o cmam 
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