| NUMERICAL STUDY ON AIR FLOW AROUND AN OPENING WITH LARGE EDDY SIMULATION |
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| 引用本文： | Fan Hong-ming,Ren Hong-ze,Li Xian-ting,Yi JiangDepartment of Building Science,Tsinghua University,Beijing 100084,China,e-mail:xting li @ tsing-hua.edu.cn. NUMERICAL STUDY ON AIR FLOW AROUND AN OPENING WITH LARGE EDDY SIMULATION[J]. 水动力学研究与进展(B辑), 2003, 15(6) |
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| 作者姓名： | Fan Hong-ming Ren Hong-ze Li Xian-ting Yi JiangDepartment of Building Science Tsinghua University Beijing 100084 China e-mail:xting li @ tsing-hua.edu.cn |
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| 作者单位： | Fan Hong-ming，Ren Hong-ze，Li Xian-ting，Yi JiangDepartment of Building Science，Tsinghua University，Beijing 100084，China，e-mail:xting li @ tsing-hua.edu.cn |
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| 摘 要： | Jet characteristics of air supply opening in a ventilating or an air-conditioning system is primarily decided by the folw state in the duct connected to the opening. It is valuable to study the opening jet characteristics and the flow state in a duct. In this study, the Large Eddy Simulation (LES) technique combined with the Tarlor-Galerkin Finite Element Method ( FEM) in Computational Fluid Dynamics (CFD) was applied to the problem. The 3-D flow fields in ducts around air supply opening under typical conditions were investigated by numerical simulation as well as experimental measurements. Numerical results agree well with the available experimental data. It indicates that the LES method is available under the conditions with complicated boundaries and inner accompanied by anisotropic large-scale eddies, and it is credible to predict the jet deflection characteristics around an opening.
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NUMERICAL STUDY ON AIR FLOW AROUND AN OPENING WITH LARGE EDDY SIMULATION |
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| Fan Hong-ming,Ren Hong-ze,Li Xian-ting,YI Jiang. NUMERICAL STUDY ON AIR FLOW AROUND AN OPENING WITH LARGE EDDY SIMULATION[J]. Journal of Hydrodynamics, 2003, 15(6) |
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| Authors: | Fan Hong-ming Ren Hong-ze Li Xian-ting YI Jiang |
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| Abstract: | Jet characteristics of air supply opening in a ventilating or an air-conditioning system is primarily decided by the folw state in the duct connected to the opening. It is valuable to study the opening jet characteristics and the flow state in a duct. In this study, the Large Eddy Simulation (LES) technique combined with the Tarlor-Galerkin Finite Element Method ( FEM) in Computational Fluid Dynamics (CFD) was applied to the problem. The 3-D flow fields in ducts around air supply opening under typical conditions were investigated by numerical simulation as well as experimental measurements. Numerical results agree well with the available experimental data. It indicates that the LES method is available under the conditions with complicated boundaries and inner accompanied by anisotropic large-scale eddies, and it is credible to predict the jet deflection characteristics around an opening. |
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| Keywords: | Computational Fluid Dynamics (CFD) Finite Element Method (FEM) Large Eddy Simulation (LES) |
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