Consistent Conditional Moment Closure Modelling of a Lifted Turbulent Jet Flame Using the Presumed 𝛽-PDF Approach

Table 5

Rate parameters of reaction (R9), H + O₂ (+M) ⇌ HO₂ (+M).

		Ó Conaire	Mueller	Li	Burke
High-pressure limit	𝐴	1.475×10^12	1.475×10^12	1.475×10^12	4.65084×10^12
	𝑛	0.6	0.6	0.6	0.44
	𝐸𝑎	0	0	0	0
Low-pressure limit	𝐴	3.482×10^16	3.482×10^16	6.366×10^20	6.366×10^20
	𝑛	−0.411	−0.411	−1.72	−1.72
	𝐸𝑎	−1.115×10^3	−1.115×10^3	5.248×10^2	5.248×10^2
	𝐹𝑐	0.5	0.5	0.8	0.5
	𝜀H2	1.3	2.5	2	2
	𝜀H2O	14	12	11	14
	𝜀O2	1	1	0.78	0.78

Units are cm³-mole-sec-kcal-K; 𝑘=𝐴𝑇^𝑛exp(−𝐸_𝑎/𝑅𝑇).
Nomenclature: 𝐴: preexponential coefficient; 𝑛: temperature exponent; 𝐸_𝑎: activation energy; 𝐹_𝑐: broadening factor; 𝜀: third-body efficiency factor.