By Nikolai M. Rubtsov
This booklet summarizesthe major advances inthe mechanisms of combustion procedures. It makes a speciality of the research of kinetic mechanisms of gasoline combustion methods and experimental research into the interrelation of kinetics and fuel dynamics in fuel combustion. The ebook is complimentary to the only formerly released, The Modes of Gaseous Combustion.
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Additional resources for Key Factors of Combustion: From Kinetics to Gas Dynamics
It is known that the velocity of non-thermal flame is approximately proportional to a root square of diffusivity of the active center participating in positive chain interaction [2, 6, 9]. As is also seen in Fig. 4a (points) and Fig. 5–5. In Fig. 5 % NCl3 in hydrogen are shown. e. 5 % NCl3 in H2 is non-thermal (the warming up does not exceed 10 °K [22, 24]). As is also seen, the pressure limit of thermal ignition in hydrogen is lower than in He. Meanwhile, as heterogeneous termination occurs in the diffusive area (each active center is terminated at the reactor wall ) and the diffusivity of a probe particle in H2 exceeds that in He , the value of pressure limit of thermal ignition in hydrogen should be higher than in He.
Even despite the solution of the inverse kinetic problem on the non-thermal flame propagation in diluted mixtures of nitrogen trichloride with allowance for the experimental data on the upper limit of self-ignition calls for further investigation, one can draw the following major conclusion from the results of the study. The process of thermal decomposition of NCl3 with the exception for the unidentiﬁed reaction of termolecular chain termination can be considered as a model one along with the reaction of hydrogen oxidation.
The described procedure differs from the method used in [23, 29, 30], based on the solution of the explicit differential scheme for the set of diffusion-reaction equations. Each next step of integration was carried out in a new system of coordinates. In the process, the velocity value calculated at the previous step was substituted into the system of equations. Thus, until the stationary value of flame velocity (representing an eigenvalue of the system) was attained, the intermediate steps of integration did not correspond to any real process.
Key Factors of Combustion: From Kinetics to Gas Dynamics by Nikolai M. Rubtsov