Evaluation of local preconditioners for multigrid solutions of the compressible Euler equations /
also improve (albeit nominally) the damping for modes which
| Main Author: | |
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| Format: | Thesis eBook |
| Language: | English |
| Published: |
[Place of publication not identified] :
[publisher not identified] ;
1996.
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| Subjects: | |
| Online Access: | Link to OAKTrust copy |
| Summary: | also improve (albeit nominally) the damping for modes which and without preconditioning, as well as the relative accuracy are high-frequency in only one direction (high-low and low- assessing how improved low-frequency propagation can enhance coarsening multigrid algorithm over several low freestream compressible Euler equations. In this study, both the matrix conclusions are drawn about the usefulness of multigrid with effectiveness of two local preconditioners, when used in a exhibit similar damping properties for error modes which are first- and second-order numerical studies in a full- high modes). Thus, an important aspect of this work is high-frequency in both coordinate directions (i.e., high-high Mach numbers and with different boundary conditions indicate modes), it is known that the Turkel preconditioner provides multigrid algorithm, in accelerating the rate of convergence multigrid convergence rates for preconditioned iterative of 'nrkel's preconditioner result in better convergence rates of the different solution methods used. preconditioner are tested. While both preconditioners preconditioner developed by Turkel and the block-Jacobi significantly better low-frequency propagation. In this techniques with similar damping properties. The results of than the block-Jacobi preconditioner. In addition, that the superior low-frequency propagation characteristics The goal of this study is to examine and compare the thesis, this improved lowfrequency propagation is shown to to an accurate steady solution of the two-dimensional |
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| Item Description: | "Major subject: Aerospace Engineering". Vita. |
| Physical Description: | viii, 54 leaves : illustrations ; 28 cm. Also available online. Issued also on microfiche from Lange Micrographics. |
| Bibliography: | Includes bibliographical references: pages 51-53. |