Numerical Method for LES of Incompressible Flow with Compact Finite Difference
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- MORINISHI Yohei
- Graduate School of Engineering, Nagoya Institute of Technology
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- YAMAKI Masato
- 名古屋工業大学大学院
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- OBATA Takamasa
- 名古屋工業大学
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- TAKEICHI Kota
- 名古屋工業大学大学院
Bibliographic Information
- Other Title
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- コンパクト差分による非圧縮性流れの数値計算手法とLES
Abstract
A high-order numerical algorithm for incompressible flows with a compact finite difference method is proposed. There are some difficulties on the compact finite difference when a numerical simulation of incompressible flow is concerned. For instance, the effective matrix solver for discrete Poisson equation and the strategy to reduce numerical non-linear instability are still not clear for the compact finite difference methods. In this study, an effective matrix solver for discrete Poisson equation is selected and a method which reduces the numerical instability without any artificial dissipation or low pass filtering is proposed. These proposals are estimated on a numerical simulation of 3D periodic flow. Then, to demonstrate the reliability of the proposed method and to examine the effect of the grid resolution and the order of accuracy for high-order compact finite differences, the incompressible turbulent plane channel flow simulations are performed with and without SGS models. Finally, the large-eddy simulations of turbulent wavy channel flow are performed with a boundary-fitted curvilinear grid.
Journal
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- TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B
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TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 77 (781), 1731-1746, 2011
The Japan Society of Mechanical Engineers
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Keywords
Details 詳細情報について
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- CRID
- 1390001206262036096
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- NII Article ID
- 130001054951
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- ISSN
- 18848346
- 03875016
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- Data Source
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- JaLC
- Crossref
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed
