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首页> 外文期刊>Journal of Computational Physics >Filtered density function simulator on unstructured meshes
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Filtered density function simulator on unstructured meshes

机译:非结构化网格上的滤波密度函数模拟器

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摘要

A new computational filtered density function (FDF) methodology is developed for large eddy simulation (LES) of turbulent reacting flows. This methodology is based on a Lagrangian Monte Carlo (MC) FDF solver constructed on a domain portrayed by an unstructured mesh. The base filtered transport equations on this mesh are solved by a finite-volume (FV) method. The consistency of the hybrid FV-MC solver and the realizability of the simulated results are demonstrated via LES of a temporally developing mixing layer. The overall performance of the model is appraised by comparison with direct numerical simulation (DNS) data. The algorithmic implementation in the commercial software ANSYS-FLUENT facilitates future FDF-LES of turbulent combustion in complex configurations.
机译:开发了一种新的计算滤波密度函数(FDF)方法,用于湍流反应流的大涡模拟(LES)。该方法基于拉格朗日蒙特卡洛(MC)FDF求解器,该求解器构造在非结构化网格所描绘的域上。通过有限体积(FV)方法求解该网格上的基本滤波输运方程。混合FV-MC解算器的一致性和仿真结果的可实现性通过时变混合层的LES进行了证明。通过与直接数值模拟(DNS)数据进行比较来评估模型的整体性能。商业软件ANSYS-FLUENT中的算法实现促进了复杂配置中湍流燃烧的未来FDF-LES。

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