Zonal Multigrid Solution of Compressible Flow Problems on Unstructured and Adaptive Meshes PDF Download
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Author: Dimitri J. Mavriplis
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
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Author: Dimitri J. Mavriplis
Publisher:
ISBN:
Category :
Languages : en
Pages : 32
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Author: National Aeronautics and Space Administration (NASA)
Publisher: Createspace Independent Publishing Platform
ISBN: 9781722946487
Category :
Languages : en
Pages : 26
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The simultaneous use of adaptive meshing techniques with a multigrid strategy for solving the 2-D Euler equations in the context of unstructured meshes is studied. To obtain optimal efficiency, methods capable of computing locally improved solutions without recourse to global recalculations are pursued. A method for locally refining an existing unstructured mesh, without regenerating a new global mesh is employed, and the domain is automatically partitioned into refined and unrefined regions. Two multigrid strategies are developed. In the first, time-stepping is performed on a global fine mesh covering the entire domain, and convergence acceleration is achieved through the use of zonal coarse grid accelerator meshes, which lie under the adaptively refined regions of the global fine mesh. Both schemes are shown to produce similar convergence rates to each other, and also with respect to a previously developed global multigrid algorithm, which performs time-stepping throughout the entire domain, on each mesh level. However, the present schemes exhibit higher computational efficiency due to the smaller number of operations on each level. Mavriplis, Dimitri J. Unspecified Center NAS1-18107; NAS1-18605; RTOP 505-90-21-01...
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Category : Aeronautics
Languages : en
Pages : 702
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Author: D. J. Mavriplis
Publisher:
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Category :
Languages : en
Pages : 66
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Category :
Languages : en
Pages : 280
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Category : Government publications
Languages : en
Pages :
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Category : Government publications
Languages : en
Pages : 1040
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Category : Science
Languages : en
Pages : 1114
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Category : Computer science
Languages : en
Pages : 76
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Category :
Languages : en
Pages : 84
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