Investigation of oxygen vibrational relaxation by quasi-classical trajectory method

Vibrational relaxation and dissociation in O2-O mixtures

“…The O 2 -O vibrational relaxation time, previously obtained in [23] from the solution of master equations, is compared to the vibrational relaxation time derived from the monoquantum deactivation RC, reported by [9] and [45] in Fig. 7.…”

“…Because the probability of multiquantum jumps in the O 2 -O 2 system is much lower than that with |∆v| = 1, only transitions with |∆v| ≤ 5 are considered in the present work. The database of O 2 -O rates, employed in the present work, includes all possible transitions [23].…”

“…The cross sectional data of bound-bound transitions, generated by the QCT method [23], is modified to take into account the degeneracy of the spin and orbital momentum of reactants. The degeneracy factor of the O( 3 P ) and O 2 ( 3 X − g ) reactants can be expressed in the form, given by [24]:…”

Quasi-One-Dimensional and Two-Dimensional Numerical Simulation of Scramjet Combustors

“…[3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20] In these papers one can find detailed analysis of the current trends in numerical method developments for analyzing a wide class of propulsive systems, in which a special significance is given to methods of structured and unstructured grids generations and computations, as well as the progress in shock-waveboundary-layer interactions within combustion chambers of air breathing engines. 69,[76][77][78][79][80][81][82][83][84] A considerable number of papers were dedicated to investigate chemical kinetic models. Only part of these models are possible to take into account in our calculations.…”

Communication: Vibrational relaxation of CO(1Σ) in collision with Ar(1S) at temperatures relevant to the hypersonic flight regime

“…[1][2][3][4][5][6][7][8][9] Specifically, the vibrational relaxation of diatomic molecules during collisions with the surrounding gas is an important elementary process in hypersonic flow typical of spacecraft entering an atmosphere. [10][11][12][13][14][15][16] The key parameters for modeling these systems are the rate coefficients describing the collision of diatomic molecules with other atoms and molecules in the atmosphere. The vibrational relaxation process is essential for characterizing the energy flow from vibrational to rotational and translational degrees of freedom and chemical kinetics can depend on the distribution of energy between these modes.…”