Numerical simulation of unsteady gunpowder combustion at a rapid rise in pressure on the basis of a conjugate combustion model A. Yu. Krainov, V. A. Poryazov
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ArticleContent type: Текст Media type: электронный Subject(s): твердое топливо | скорость горения | нестационарное горение | численное моделирование | порохGenre/Form: статьи в журналах Online resources: Click here to access online
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Journal of engineering physics and thermophysics Vol. 95, № 1. P. 184-192Abstract: A physicomathematical model has been presented for solid propellant (gunpowder) combustion, in which account is taken of chemical reactions in the condensed and gaseous phases. Fourth-kind boundary conditions (conjugation conditions) were set on the combustion surface. The results of calculation of the N gunpowder combustion velocity at constant pressure agree well with the existing experimental data on the dependence of velocity on pressure. The results of numerical simulation of unsteady gunpowder combustion at a rapid rise in pressure have been presented. Quantitative data have been obtained on the deviation of the combustion velocity at a rapid rise in pressure from the steady values of the combustion velocity at constant pressure.
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A physicomathematical model has been presented for solid propellant (gunpowder) combustion, in which account is taken of chemical reactions in the condensed and gaseous phases. Fourth-kind boundary conditions (conjugation conditions) were set on the combustion surface. The results of calculation of the N gunpowder combustion velocity at constant pressure agree well with the existing experimental data on the dependence of velocity on pressure. The results of numerical simulation of unsteady gunpowder combustion at a rapid rise in pressure have been presented. Quantitative data have been obtained on the deviation of the combustion velocity at a rapid rise in pressure from the steady values of the combustion velocity at constant pressure.
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