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首页> 外文期刊>Journal of Hydrodynamics >NUMERICAL STUDY ON AIR FLOW AROUND AN OPENING WITH LARGE EDDY SIMULATION
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NUMERICAL STUDY ON AIR FLOW AROUND AN OPENING WITH LARGE EDDY SIMULATION

机译：大涡模拟的开孔周围空气流动的数值研究

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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.
机译：通风或空调系统中空气供应口的射流特性主要取决于连接到该开口的管道中的跟随状态。研究管道中的开口射流特性和流动状态非常有价值。在这项研究中，将大涡模拟（LES）技术与Tarlor-Galerkin有限元方法（FEM）相结合应用于计算流体动力学（CFD）。通过数值模拟和实验测量研究了典型条件下送风口周围管道中的3D流场。数值结果与现有实验数据吻合良好。这表明，在边界复杂，内部伴随各向异性大涡旋的条件下，LES方法是可行的，预测开口附近的射流偏转特性是可信的。

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