1999 Fiscal Year Final Research Report Summary
Modeling for large eddy simulation of complex turbulent flow based on dynamic subgrid scale model
| Project/Area Number |
10650160
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Fluid engineering
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| Research Institution | The University of Tokyo |
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Principal Investigator |
TANIGUCHI Nobuyuki Institute of Industrial Science, University of Tokyo Assistant Professor, 生産技術研究所, 助教授 (10217135)
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| Co-Investigator(Kenkyū-buntansha) |
OSHIMA Marie Institute of Engineering Mechanics and Systems University of Tsukuba Assistant Professor, 機能工学系, 助教授 (40242127)
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| Project Period (FY) |
1998 – 1999
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| Keywords | Computational Fluid Dynamics / Turbulence / Large eddy simulation / Subgrid model / Combustion flow / Multiphase flow / Finite element method / Finite difference method |
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| Research Abstract |
This Project aimed to develop the turbulent, modeling for the large eddy simulation based on a dynamic sub-grid model proposed by Germano which were evaluated only in the fundamental turbulence phenomena.
The following objects were investigated ;
a) Development of a dynamic subgrid model for the premixed turbulent combustion based on the flamelet concept for applting to a gas-turbine combustor flows.
b) Development of a dynamic subgrid model for the particle-laden flow by considering the two way coupling between distributed particles and turbulence fluctuation.
c) Development of a new concept subgrid model by considering the viscous dissipation effect and the grid dependency in grid-scale solution.
d) Modification of a dynamic subgrid model for the external forced flow fields by considering the anisotroic effect of turbulence.
e) Development of the high accurate numerical schemes for the finite element method and the finite difference method considering the conservation characteristics in the discretized formulation.
f) Numerical evaluation of the affects caused by the additional filtering operation and the upwind schemes introduced for the compress of the numerical instability.
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