衝撃波管を用いた炭化水素熱分解におけるすす粒子の生成

摘要

Soot particles formation process in pyrolysis of hydrocarbon fuels, highly diluted with argon, behind reflected shock waves was studied by using optical methods. The laser light extinction measurement was conducted to obtain total soot volume. Time history of soot particles temperature was estimated based on spectral dependence of monochromatic emissive powers from thermal radiation of the soot particles. The final soot particles temperature, corresponding to the final ambient temperature, varies from temperature behind the reflected shock wave, which is due to endothermic reactions of fuel decomposition and exothermic processes of soot particle formation. The experimental results show that the soot particles temperature governs the final soot yield. The homogeneous nucleation theory can explain the temperature dependence of soot particles formation qualitatively.%炭化水素燃料からのすす粒子の生成は雰囲気の温度rnに強く依存し，すす粒子の生成量が温度に対して極大rn値を示す，いわゆるベル型の温度依存性を示すことがrn知られている.