Effect of Initial Conditions and Numerical Investigation of Instability Developed during Synthesis of TiC via Vortex Combustion at Moderate Temperaturesстатья
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Дата последнего поиска статьи во внешних источниках: 17 октября 2021 г.
Аннотация:Despite the fact that the classical theory of combustion (CTC) operates with the simplest,elementary objects and concepts, such as: flat or slightly curved combustion fronts, elementarycombustion models and potential flows. there are some problems that the CTC is only facing with asufficiently strong curvature of the front. For example, Markstein's solution in the problem ofhydrodynamic instability of a plane combustion front. In the work presented by the authors, theproblem of stabilizing the titanium carbide synthesis front at moderate temperatures, which cannotbe plane due to the thermo physical features of the system under consideration (Le<<1, Ze=6.03 atТad=3300К), is similarly solved. A model of vortex combustion with a spirally curved front isproposed, the numerical analysis of which showed the stability of similar front of the TiC synthesisin the field of vortex hydrodynamic currents. The resulting solution can serve as a completealternative to the mode of spiral spin combustion (or rather, to its branch with a low orbital speedand a low combustion temperature) of such systems, not only considered conditionally unstable inCTC, but also actually manifesting this instability during numerical calculations of the area of theexistence of a spinal spot with a small radius and great curvature.doi.org/10.4028/www.scientific.net/KEM.887