Verification, Validation, and Testing of Kinetic Mechanisms of Hydrogen Combustion in Fluid-Dynamic Computations

Table 3

Parameters of kinetic models and the computational costs. Case  1: test case “ignition,” 38 cells; case  2: test case “flame propagation,” 400 cells.

Model	Number of equations^*	Number of species	Case  1, CPU hours/ms	Case  2, CPU hours/ms
Marinov et al. [11]	1	3 (H2, O2, H2O) + N2	0.18	0.14
Lee and Kim [12]	2	4 (3 + H) + bath gas	0.43	0.20
abridged Jachimowski’s model [8]	7	6 (3 + H, O, OH) + bath gas	1.7	5.2
Zhukov (this work)	13	8 + bath gas	1.6	19
Gutheil et al. [14]	21	8 + bath gas	2.5	67
O'Conaire et al. [13]	23	8 + bath gas	1.8	71
Konnov [15]	29	8 + bath gases	2.3	36
Burke et al. [16]	22	8 + bath gases	1.8	35

^*The number of equations could exceed the number of reactions because of the possible presence of double reactions and of third body reactions where the activation energy depends on the collisional partner.