Numerical Simulation of Laminar Flame Speed and Ignition Delay Characteristic for Petrochemical and Renewable Diesel and Jet fuels

  • 李 浩

Student thesis: Doctoral Thesis

Abstract

This research first determined the composition and proportion of surrogates according to the composition of the petrochemical and renewable fuels Then the CHBR model in the CHEMKIN-Pro software was used to verify the ignition delay time of HRJ JP-5 and HRD The difference in the ignition delay time of fuel under the equivalence ratio of 1 0 different pressures (8 11 30bar) and pressure of 20bar and different equivalence ratios (0 5 1 0 1 5) were discussed PREMIX model was used to verify the laminar flame velocity of HRJ JP-5 HRD and explore the difference of laminar flame velocity of different fuels at the same pressure and same unburned gas temperature Among the three types of aviation fuel HRJ ignition delay time in the low-temperature range was the shortest while JP-5 was the longest The average ignition delay time of HRJ in the low-temperature range under different equivalence ratios and pressure were about 59% and 57% respectively lower than that of JP-5 On the other hand the average ignition delay time of HRD in the low-temperature range at different equivalent ratios and pressures were 45% and 55% lower than that of petrochemical diesel respectively Applied to all fuel the ignition delay time was shorter when the pressure increased And the laminar flame speed of all fuels exhibited similar results
Date of Award2020
Original languageEnglish
SupervisorWei-Cheng Wang (Supervisor)

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