热电偶沉积法测量乙烯非预混火焰的试验研究

EXPERIMENTAL INVESTIGATIONS ON MEASUREMENT OF THE SOOT VOLUME FACTION DISTRIBUTION IN A LAMINAR NONPREMIXED ETHYLENE FLAME BY TPD METHOD

烟黑容积份额的测量是研究烟黑生成的反应机理的关键步骤,而热电偶沉积法(TPD)则是一种测量烟黑容积份额的新方法。本文详细描述了采用热电偶沉积法测量烟黑容积份额的理论基础和数据处理过程,并将此方法应用于层流乙烯非预混火焰的测量中。测量结果表明,该火焰中烟黑容积份额的分布同火焰结构和火焰温度都有关。

Soot volume fraction measurement is the key step of the procedure in the research on the reactive mechanism of the soot formation. And the thermocouple particle densitometry （TPD） is a new method to measure the soot volume fraction. In this article, the principle and the data processing for the measurement of the soot volume fraction by TPD method is described, and the soot volume fraction in a laminar nonpremixed ethylene flame is measured using this method. It is shown that the distribution of the soot volume faction in the laminar flame is associated with the flame structure and the temperature of the flame.