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非平衡等离子体对甲烷--氧扩散火焰影响的实验研究

周思引 聂万胜 车学科 仝毅恒 郑体凯

周思引, 聂万胜, 车学科, 仝毅恒, 郑体凯. 非平衡等离子体对甲烷--氧扩散火焰影响的实验研究[J]. 力学学报, 2019, 51(5): 1336-1349. doi: 10.6052/0459-1879-19-149
引用本文: 周思引, 聂万胜, 车学科, 仝毅恒, 郑体凯. 非平衡等离子体对甲烷--氧扩散火焰影响的实验研究[J]. 力学学报, 2019, 51(5): 1336-1349. doi: 10.6052/0459-1879-19-149
Zhou Siyin, Nie Wansheng, Che Xueke, Tong Yiheng, Zheng Tikai. EXPERIMENT STUDY OF EFFECT OF NONEQUILIBRIUM PLASMA ON METHANE-OXYGEN DIFFUSIVE FLAME[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(5): 1336-1349. doi: 10.6052/0459-1879-19-149
Citation: Zhou Siyin, Nie Wansheng, Che Xueke, Tong Yiheng, Zheng Tikai. EXPERIMENT STUDY OF EFFECT OF NONEQUILIBRIUM PLASMA ON METHANE-OXYGEN DIFFUSIVE FLAME[J]. Chinese Journal of Theoretical and Applied Mechanics, 2019, 51(5): 1336-1349. doi: 10.6052/0459-1879-19-149

非平衡等离子体对甲烷--氧扩散火焰影响的实验研究

doi: 10.6052/0459-1879-19-149
基金项目: 1) 国家自然科学基金资助项目(91441123);国家自然科学基金资助项目(51777214);国家自然科学基金资助项目(51876219)
详细信息
    通讯作者:

    周思引

  • 中图分类号: TF055,O539

EXPERIMENT STUDY OF EFFECT OF NONEQUILIBRIUM PLASMA ON METHANE-OXYGEN DIFFUSIVE FLAME

  • 摘要: 利用自主设计的等离子喷注器采用介质阻挡放电方式产生非平衡等离子体,首先利用纹影技术、热电偶、单点红外测温等多种诊断方法实验研究了纯氧放电等离子体的电学特性、热效应及气动效应,然后通过可见光和化学自发辐射成像技术获得了火焰形态及特征参数,详细分析了等离子体对甲烷--纯氧扩散火焰形态和释热的影响,并计算了放电功率及费效比. 结果表明, 燃烧导致放电电流显著增大,其中电压幅值与氧气流速对放电电流大小的影响规律正好相反;与空气等离子体相比, 相同流量与电压条件下氧等离子体放电功率较高,但其发光强度明显较弱; 氧等离子体热效应微弱, 对燃烧的影响可以忽略,放电反应中释热过程主要由含氧组分决定;放电产生了具有3个速度分量的诱导射流, 增大了氧射流角,且电压越大越显著.等离子体主要通过气动效应改变了燃料与氧化剂的掺混,使得一定条件下火焰变得更稳定、释热更强.在所研究的范围内等离子体作用的费效比最低仅为2.2%,大流量、小混合比更有利.

     

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出版历程
  • 收稿日期:  2019-06-11
  • 刊出日期:  2019-09-18

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