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首页> 外文会议>IUTAM Symposium on Turbulent Mixing and Combustion, Jun 3-6, 2001, Kingston, Ontario, Canada >MIXING AND COMBUSTION, PERSPECTIVES
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MIXING AND COMBUSTION, PERSPECTIVES

机译：混合与燃烧，观点

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摘要

Besides RANS-techniques, large eddy simulation in three dimensions is nowadays used to study turbulent flow and mixing as well as combustion in various configurations. This paper firstly aims to present some results based on the conserved scalar method in connection with the concept of sub-grid scale pdf for combustion-LES. The second objective is to provide an evaluation of the combustion-LES. To illustrate these, LES results of a range of flows including DLR-flame, counterflow configuration and jet in cross flow are presented. The performance and limitations of submodels are evaluated and discussed. It is shown that LES is able to deliver good results very close to available measured data. In spite of its high computational cost, LES represents a suitable tool for prediction of combusting flows. Efforts to extend the applicability of LES in complex configurations of technical importance under conceivable computing time must therefore be encouraged.
机译：除了RANS技术外，如今还使用三维三维大涡模拟来研究各种配置下的湍流和混合以及燃烧。本文首先旨在基于保守标量方法，结合燃烧LES的子网格规模pdf的概念，给出一些结果。第二个目的是对燃烧LES进行评估。为了说明这些，给出了一系列流动的LES结果，包括DLR火焰，逆流构造和错流射流。评估和讨论了子模型的性能和局限性。结果表明，LES能够非常接近可用的测量数据提供良好的结果。尽管计算成本很高，LES还是一种预测燃烧流量的合适工具。因此，必须鼓励在可想象的计算时间下，在具有重要技术意义的复杂配置中扩展LES的适用性。

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