...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Combustion Science and Technology >EVALUATION OF THE PLANCK MEAN ABSORPTION COEFFICIENTS FOR RADIATION TRANSPORT THROUGH SMOKE
【24h】

EVALUATION OF THE PLANCK MEAN ABSORPTION COEFFICIENTS FOR RADIATION TRANSPORT THROUGH SMOKE

机译：烟辐射传输的普朗克平均吸收系数评估

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A literature review of experimental measurements of mass specific extinction coefficients, σ_s, for combustion-generated particulate has been conducted to obtain an improved value of the constant in the frequently used expression for the Planck mean absorption coefficient through smoke, κ_m = C_0f_vT. This expression, which results from the product of the spectral absorption coefficient for smoke particles and the Planck spectral distribution curve integrated over all wavelengths, is used to simplify radiative transport calculations in combustion systems. It is shown that a value of C_0 =2370 +- 240m~(-1) K~(-1) is consistent with the available data and that this value is approximately two times the values commonly used. Using the available experimental values of σ_s to calculate C_0 eliminates the problems associated with the large uncertainties in soot refractive index encountered when Rayleigh theory is used to predict C_0. It is also shown that a value of K_e = 8.8 +- 0.9 for the dimensionless extinction coefficient is consistent with the available experimental data. These values are valid for stoichiometric and overventilated combustion only.
机译：已经对燃烧产生的颗粒的质量比消光系数σ_s的实验测量进行了文献综述，以求得普朗克通过烟雾的平均吸收系数κ_m= C_0f_vT的常用表达式中的常数的改进值。该表达式由烟雾颗粒的光谱吸收系数与所有波长上积分的普朗克光谱分布曲线的乘积得出，用于简化燃烧系统中的辐射传输计算。结果表明，C_0 = 2370 +-240m〜（-1）K〜（-1）的值与可用数据一致，并且该值大约是常用值的两倍。使用σ_s的可用实验值来计算C_0，消除了在使用瑞利理论预测C_0时遇到的烟ot折射率不确定性大的问题。还表明，无因次消光系数的K_e = 8.8 +-0.9值与可用的实验数据一致。这些值仅对化学计量和通风过度的燃烧有效。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号