Determination of the limits of applicability of the chemical equilibrium model to the detonation products of gas mixtures

Bryakina, U. F.; Gubin, S. A.; Tereza, А. М.; Shargatov, V. A.

doi:10.1134/s1990793110060151

Cited by 7 publications

(8 citation statements)

References 2 publications

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“…The results obtained agree with the data from [6] and confirm that the algorithm proposed in [6] can be used to determine the feasibility of using the model of chemical equilibrium mixture. A sufficient condition for the applicability of this model, obtained in [7], pre dicts that, at the stage of propagation of a spherical detonation wave, the model will certainly lead to a negligible error in the pressure if the radius of the wave is larger than 5 cm, which is consistent with the results of the present work.…”

Section: Calculation Resultssupporting

confidence: 92%

“…Numerical simulation of flows of detonation products is performed using a detailed kinetic mechanism, which includes dozens of reactions. Such a numerical simulation makes it possible to examine how the com position of the detonation products changes at differ ent initial parameters and provides a direct test of the conclusions drawn in [6][7][8].…”

Section: Introductionmentioning

confidence: 99%

“…In [5,8], a sufficient condi tion for the applicability of the model of a chemical equilibrium mixture in numerical simulations of reacting flows. This paper is a continuation of [5][6][7][8]. Numerical simulation of flows of detonation products is performed using a detailed kinetic mechanism, which includes dozens of reactions.…”

Section: Introductionmentioning

confidence: 99%

“…The limits of applicability of this model to the detonation products of fuel-oxygen and fuel-air mixtures for a number of model problems were determined in [6,7]. In [5,8], a sufficient condi tion for the applicability of the model of a chemical equilibrium mixture in numerical simulations of reacting flows.…”

Section: Introductionmentioning

confidence: 99%

“…In [1][2][3][4][5][6], such a change in the mixture composi tion, was proposed to be described on the assumption that the mixture is in chemical equilibrium at every instant of time. The limits of applicability of this model to the detonation products of fuel-oxygen and fuel-air mixtures for a number of model problems were determined in [6,7].…”

Section: Introductionmentioning

confidence: 99%

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Changes in the product composition during the detonation of an unconfined volume of a combustible mixture

Bryakina

Gubin

Shargatov

et al. 2012

Russ. J. Phys. Chem. B

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For a model problem the solution to which describes the main features of changes in the parame ters of the medium in the detonation of an unconfined gas mixture charge of in the air, direct numerical sim ulation, without of simplifying assumptions on changes in the composition of the mixture, was performed to study changes in the composition of the detonation products, determine the limits of applicability of the chemical equilibrium mixture model, and verify a previously obtained sufficient condition of applicability of the chemical equilibrium mixture model. The results of determining the limits of applicability of the chemical equilibrium mixture model previously obtained using an approximate method were confirmed. ( ), J J J r r r − − Δ = − 1 , J J r r + = 1 2 , J J u u − = 1 2 1 2 , J J u u + − = 1 2 1 2 , J J e e − − = 1 2 1 2 , J J e e + − = 1 2 1 2 , J J i i − − = 1 2 1 2 , J J i i − − = 1 2 1 2 2, J J m m − − Δ =Δ 1 2 1 2 2, J J m m + − Δ =Δ 1 2 1 2 , J J V V − − = 1 2 1 2 , J J

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Section: Calculation Resultssupporting

confidence: 92%

Section: Introductionmentioning

confidence: 99%