Effects of radiation reabsorption of C1-C6 hydrocarbon flames at normal and elevated pressures

摘要: Abstract The radiative preheating of the unburned hydrocarbon fuels by burned combustion products in counterflow diffusion flame at pressures from 1 to 100 atm was investigated. characteristics hot H2O, CO2 and cold gases were calculated HITEMP 2010, CDSD-4000 HITRAN 2016 databases respectively. A simplified radiation reabsorption model given based on properties energy T = 1500–2000 K, P = 1–100 atm. By using this model, critical strain rate for eight C1-C6 species T = 2000 K, results show that should be taken into account when is less than 2.9 s−1 P = 100 atm. comparison time residence CH4 shows scale would dominate elevated pressures.