550 0.7 0.9 600 8.5 9.8 650 55.4 61.0 Simplification of the explosive eigenvalue for stage-1B The expression for the explosive eigenvalue for a general fuel (for = 1) is given by: γ (S 61) (S 62) The expression can be further approximated as (S 63) (S 64) For high pressures and low temperature and high pressures (T < 600 K, P > 10 bar) , which yields (S 65) For = 1 and = 1 we get α β (S 66) Note this approximation has significant error in the absolute value of and not recommended λ1B to be used above the limited temperature and pressure range. Prediction for first-stage ignition delay for propane under varying equivalence ratios and pressure
550 0.7 0.9 600 8.5 9.8 650 55.4 61.0 Simplification of the explosive eigenvalue for stage-1B The expression for the explosive eigenvalue for a general fuel (for γ = 1) is given by: (S 61) (S 62) The expression can be further approximated as (S 63) (S 64) For high pressures and low temperature and high pressures (T < 600 K, P > 10 bar) , which yields (S 65) For α = 1 and β = 1 we get (S 66) Note this approximation has significant error in the absolute value of λ1B and not recommended to be used above the limited temperature and pressure range. Prediction for first-stage ignition delay for propane under varying equivalence ratios and pressure
1-s2.0-S0010218015002060-mmc1.docx