Burning and quenching of a powder in the presence of a rapid pressure drop

Marshakov, V. N.; Leĭpunskiĭ, O. I.

doi:10.1007/bf00748735

Cited by 5 publications

(5 citation statements)

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“…The study [7] also provides results on modelling the N powder extinction under a sudden drop in pressure. The calculated values of the pressure drop and its rate, leading to the extinction of the N powder, are in satisfactory agreement with the published data of the experimental measurements [5, 6]. Solid propellant rocket engines use the MCSP as fuel.…”

Section: Introductionsupporting

confidence: 87%

“…The zone above the curves in Figure 7–8 provides the fuel combustion after the pressure drop, below – the fuel extinction. The dependences shown in Figure 7, 8 qualitatively correspond to the experimental data for the N powder from [5, 6].…”

Section: Resultssupporting

confidence: 66%

“…The studies [3,6] propose to determine the critical parameters of the fuel extinction during the pressure drop using the dimensionless parameters H ¼ p k =p 0 and W ¼ extinction. The dependences shown in Figure 7, 8 qualitatively correspond to the experimental data for the N powder from [5,6].…”

Section: Numerical Simulationsupporting

confidence: 70%

“…The studies [3, 4] are devoted to a phenomenological theory of the unsteady propellant combustion and describe the features of the unsteady combustion under a pressure change. There are also a qualitative explanation on the extinction phenomenon of the propellant under a pressure drop, which had studied experimentally by the authors in [5, 6]. The physical and mathematical model of the unsteady combustion of the N powder, which is presented in [7], takes into account chemical reactions in the condensed and in the gas phases.…”

Section: Introductionmentioning

confidence: 99%

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Mathematical Modelling on Extinction of Metallized Composite Solid Propellant Under a Sudden Drop in Pressure

Krainov

Poryazov

Krainov

2021

Propellants Explo Pyrotec

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This paper presents a physico-mathematical combustion model of the metallized composite solid propellant (MCSP), which takes into account the chemical reactions in the condensed and gas phases. The model describes convection and diffusion of the propellant components in the two-phase flow over the fuel surface and combustion of the aluminium particles emitted from the fuel. The constructed model provides the opportunity to calculate the fuel combustion rate under the constant and variable pressure. The obtained calculation results of the MCSP combustion rate using the model are in good agreement with the known experimental data. The manuscript also provides data on the modelling of the MCSP extinction under the sudden pressure change. According to the conducted numerical simulations, the value of the pressure drop, leading to the fuel extinction, depends on the mass fraction of the aluminium powder in the fuel composition and its dispersion. With an increase in the mass fraction of the aluminium powder and/or a decrease in the size of the aluminium particles emitting from the fuel surface, the extinction process occurs at a greater value and under a higher rate of the pressure drop. The numerical simulation has also shown that the addition of the aluminium powder to the composition of the propellant increases the combustion stability under the sudden drop in pressure over the combustion surface.

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Section: Introductionsupporting

confidence: 87%

Section: Resultssupporting

confidence: 66%

Section: Numerical Simulationsupporting

confidence: 70%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Mathematical Modelling on Extinction of Metallized Composite Solid Propellant Under a Sudden Drop in Pressure

Krainov

Poryazov

Krainov

2021

Propellants Explo Pyrotec

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“…and plays an important role in testing physicomathematical models for the unsteady combustion of condensed systems [1,2,17,18]. Known versions of this method use the hypothesis of flow quasistationarity during opening of a secondary nozzle for depressurization and subsequent propellant extinguishment [13].…”

Section: Introductionmentioning

confidence: 99%

Comparative Analysis of Methods for Measuring the Transient Burning Rate. I. Research Methods

Архипов

Бондарчук

Коротких

2010

Combust Explos Shock Waves

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This paper considers two independent methods for measuring the transient burning rate of solid propellants -high-speed photography and a method based on solving the inverse problem of interior ballistics. Comparative analysis shows that these methods are mutually complementary. Evaluation of the ranges of application of the inverse methods of identifying the transient burning rate shows that their use is promising not only in laboratory tests but also in measurements in large solid propellant gas generators.

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References

2020

Theory of Solid‐Propellant Nonsteady Combustion

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Burning and quenching of a powder in the presence of a rapid pressure drop

Cited by 5 publications

References 0 publications

Mathematical Modelling on Extinction of Metallized Composite Solid Propellant Under a Sudden Drop in Pressure

Mathematical Modelling on Extinction of Metallized Composite Solid Propellant Under a Sudden Drop in Pressure

Comparative Analysis of Methods for Measuring the Transient Burning Rate. I. Research Methods

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