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旋流喷雾燃烧的直接数值模拟
  • 期刊名称：工程热物理学报
  • 时间：0
  • 页码：2035-2037
  • 语言：中文
  • 分类：O357[理学—流体力学;理学—力学]
  • 作者机构：[1]浙江大学能源清洁利用国家重点实验室,浙江杭州310027
  • 相关基金：全国优秀博士学位论文作者专项资金资助项目（No.200784）;国家自然科学基金资助项目（No.50976098,No.50736006）致谢：本文的部分研究是在美国斯坦福大学湍流研究中心完成的,在此表示感谢.
  • 相关项目：气固两相湍流与燃烧相互作用的直接数值模拟和实验研究
作者： 罗坤|岑可法|樊建人|
关键词： 喷雾燃烧, 液滴蒸发, 旋流射流, 非预混燃烧, 直接数值模拟, spray combustion, droplet evaporation, swirling jet, non-premixed combustion, DNS
中文摘要：

对三维旋流喷雾燃烧进行了初步的直接数值模拟，其中液滴蒸发采用无限热传导蒸发模型描述，气相燃烧采用自适应单步反应机理，液滴的跟踪在拉格朗日框架中进行。模拟结果表明，喷雾燃烧的火焰结构十分复杂，仅采用传统的非预混燃烧模型是不够的。在蒸发和燃烧共存并存在强烈相互作用的区域，组分与混合物份额之间存在着复杂的关联，这给发展精确的湍流喷雾燃烧模型带来了挑战。

英文摘要：

Direct numerical simulation （DNS） of three-dimensional swirling spray combustion has been performed. Droplet evaporation is described based on an infinite heat conduction model in the Lagrangian framework. Gas-phase combustion is represented by an adaptive one-step reaction mechanism. Results show that the flame structures of spray combustion are quite complicated, and can not be correctly predicted by the traditionally used non-premixed combustion model. In the region with strong interactions between droplet evaporation and combustion, the correlation between species and mixture fraction becomes complex, which brings challenges to accurate modelling of turbulent sprav combustion.

同期刊论文项目
气固两相湍流与燃烧相互作用的直接数值模拟和实验研究
期刊论文 105 会议论文 13
循环流化床煤燃烧的大涡模拟研究
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