Application of an Aerosol Shock Tube for the Kinetic Studiesof n-Dodecane/Nano-Aluminum Slurries

摘要

Aerosol shock tube methods were used to measure the ignition delay times of slurries of n-dodecane and nano-aluminum particles. The aerosol shock tube has the potential to allow the study of gel propellant chemical kinetics without interference from other physical-chemical processes. A Sono-Tek ultrasonic Spray nozzle was used to produce slurry aerosol droplets which were uniformly dispersed in the driven section of the shock tube. An array of laser extinction and absorption diagnostics was used to track species time histories, droplet breakup and evaporation, and measure ignition delay times. These experiments were conducted behind reflected shock waves for temperatures ranging from 1127 to 1249 K and pressures from 4.7 to 9.5 atm.