Analytic–Numerical Investigation of Combustion in a Nonlinear Mediumстатья
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Дата последнего поиска статьи во внешних источниках: 6 декабря 2018 г.
Аннотация:Sufficient conditions of the onset of the blow-up mode for the parabolic equation with double
nonlinearity that describes the combustion process in a nonlinear medium are analyzed. A sufficient
condition for the initial function under which the time of the solution blow-up of the corresponding
initial–boundary value problem for this equation is finite is obtained. An analytical upper
bound on the solution existence time is derived. This a priori bound on the solution blow-up time is
used for the numerical refinement of the blow-up process. It is shown that the numerical diagnostics
of the solution blow-up makes it possible to obtained a better estimate of the solution blow-up time
and detect the fact of local blow-up with respect to the spatial variable.