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不同热值生物燃料燃烧特性数值模拟

周莉 夏姣辉

周莉, 夏姣辉. 不同热值生物燃料燃烧特性数值模拟[J]. 航空动力学报, 2014, (10): 2348-2354. doi: 10.13224/j.cnki.jasp.2014.10.010
引用本文: 周莉, 夏姣辉. 不同热值生物燃料燃烧特性数值模拟[J]. 航空动力学报, 2014, (10): 2348-2354. doi: 10.13224/j.cnki.jasp.2014.10.010
ZHOU Li, XIA Jiao-hui. Numerical simulation on combustion characteristics of biofuels with different calorific values[J]. Journal of Aerospace Power, 2014, (10): 2348-2354. doi: 10.13224/j.cnki.jasp.2014.10.010
Citation: ZHOU Li, XIA Jiao-hui. Numerical simulation on combustion characteristics of biofuels with different calorific values[J]. Journal of Aerospace Power, 2014, (10): 2348-2354. doi: 10.13224/j.cnki.jasp.2014.10.010

不同热值生物燃料燃烧特性数值模拟

doi: 10.13224/j.cnki.jasp.2014.10.010
基金项目: 

国家自然科学基金(51236006,51176156);陕西省自然科学基金(2013JQ7004)

详细信息
    作者简介:

    周莉(1978- ),女,河南信阳人,教授,博士,主要从事发动机内流气动热力学研究.

  • 中图分类号: V313

Numerical simulation on combustion characteristics of biofuels with different calorific values

  • 摘要: 采用标准k-ε湍流模型、涡耗散湍流燃烧模型、P-1辐射传热模型对二维简化燃烧室燃料甲烷气、沼气、生物质气的燃烧特性进行了数值模拟.通过比较不同截面的燃烧情况,分析燃烧室内的温度分布、NOx质量分数分布、流场结构,研究了不同热值燃料的燃烧特性.结果表明:在入口空气、燃料质量流量相同的条件下,随着燃料热值降低,燃烧温度降低,温度分布更均匀,NOx排放量减少,流动速度降低;适当调节余气系数,能改善燃烧效果,温度分布仍满足高热值燃料燃烧温度高于低热值燃料燃烧温度的规律;在生物燃料混合气中掺入不同热值的可燃成分,可改变混合气的热值,恰当的混合比例能更好地发挥生物燃料的作用.

     

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出版历程
  • 收稿日期:  2013-06-17
  • 刊出日期:  2014-10-28

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