| 基于IDDES和VODE方法的超声速燃烧假定PDF模拟 | |
| 牛健 ; 刘小勇 ; 朴英 ; Niu Jian ; Liu Xiaoyong ; Piao Ying | |
| 2016-03-30 ; 2016-03-30 | |
| 关键词 | 超声速燃烧 假定PDF 混合RANS/LES VODE方法 supersonic combustion assumed PDF hybrid RANS /LES VODE solver V231.2 |
| 其他题名 | Simulation of Supersonic Combustion by Assumed PDF Approach Based on IDDES Model and VODE Solver |
| 中文摘要 | 为解决化学反应源项计算带来的刚性问题,建立了基于VODE的考虑温度脉动的假定PDF方法,使用IDDES模型对超声速化学反应混合层和超声速壁面喷射燃烧进行了混合RANS/LES模拟。结果表明,大尺度涡系结构的发展对混合和燃烧过程影响明显,湍流涡团的卷曲、拉伸、剪切和破碎能够促进混合层的发展;温度脉动加剧了燃烧区的化学反应,同时在混合不充分区域产生一定的活性基积累,说明燃烧模型能够准确反映湍流输运对化学反应的影响;预测的组分分布与试验结果一致,说明本方法能够用于超声速燃烧模拟。; In order to resolve the rigidity caused by chemical source term calculation,assumed PDF approach considering temperature fluctuations based on VODE solver was founded. A hybrid RANS /LES simulation of supersonic reacting mixing layer and supersonic wall jet combustion using IDDES model shows that,development of large-scale vortex structure has a significant effect on mixing and combustion.Rolling,stretching,shearing and breaking of turbulent eddy can promote the development of mixing layer. Temperature fluctuations intensify chemical reaction of reacting zone,while the inadequate mixing region having some accumulation of active species,showing that this model can accurately reflect the impact between turbulent transports and chemical reactions. Predicted species distribution has a good agreement with experiment,indicating that this method can be used to supersonic turbulent combustion. |
| 语种 | 中文 ; 中文 |
| 内容类型 | 期刊论文 |
| 源URL | [http://ir.lib.tsinghua.edu.cn/ir/item.do?handle=123456789/143681]  |
| 专题 | 清华大学 |
| 推荐引用方式 GB/T 7714 | 牛健,刘小勇,朴英,等. 基于IDDES和VODE方法的超声速燃烧假定PDF模拟[J],2016, 2016. |
| APA | 牛健,刘小勇,朴英,Niu Jian,Liu Xiaoyong,&Piao Ying.(2016).基于IDDES和VODE方法的超声速燃烧假定PDF模拟.. |
| MLA | 牛健,et al."基于IDDES和VODE方法的超声速燃烧假定PDF模拟".(2016). |
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