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Large eddy simulation of combustion

机译:燃烧的大涡模拟

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摘要

The objective of this presentation is to give an overview of simulations made by a Large Eddy Simulation (LES) model. The LES model, founded on a physical model based on modern continuum mechanical mixture theories, includes a complete treatment of the sub grid stresses and fluxes accounting for both backscatter and outscatter. Results from numerical simulations of three combustion applications will be presented: the first configuration is a bluff body stabilized flame, the second is a pulse combustor and the third is a ramjet combustor. Results from the simulations are compared with available experimental measurements, for example temperature, constituent mass fraction and velocity fields. This comparison indicates that the LES technique works well for all investigated applications and that the simulation method mimics most of the significant flow features.
机译:本演示的目的是概述由大型涡模拟(LES)模型进行的模拟。 在基于现代连续内的机械混合理论的物理模型上成立的LES模型包括完全治疗子网压力和助势核对后散射和外出的磁通量。 由三种燃烧应用的数值模拟的结果呈现:第一配置是凹槽体稳定的火焰,第二是脉冲燃烧器,第三是拉米特燃烧器。 将模拟的结果与可用的实验测量进行比较,例如温度,构成质量分数和速度场。 该比较表明,LES技术适用于所有调查的应用程序,并且模拟方法模拟大多数重大流动功能。

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