Numerical Simulation of Unsteady Gunpowder Combustion at a Rapid Rise in Pressure on the Basis of a Conjugate Combustion Model

Krainov, A. Yu.; Poryazov, V. A.

doi:10.1007/s10891-022-02466-2

J Eng Phys Thermophy

2022

DOI: 10.1007/s10891-022-02466-2

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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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Cited by 2 publications

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Experimental and Theoretical Study of Granulated Charge Combustion in a Closed Volume

Ishchenko,

Krainov,

Rogaev

et al. 2023

J Eng Phys Thermophy

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Experimental and Theoretical Study of Granulated Charge Combustion in a Closed Volume

Ishchenko,

Krainov,

Rogaev

et al. 2023

J Eng Phys Thermophy

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Study of gas dynamics of combustion of mixed solid fuel under pressure fluctuations on the surface of the fuel

Krainov

2024

CPM

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Based on the coupled combustion model of mixed solid fuel, unsteady combustion of fuel was studied when the pressure was changed in the combustion chamber of a model controlled small solid fuel engine. Modeling of engine thrust control system was carried out in two ways: by changing the critical section area of the nozzle over time according to a given law and by changing the area of the burning surface of the fuel according to a given law. It is found that with a sharp increase in pressure, the combustion rate increases above the quasi-stationary value, which leads to an increase in the pressure in the combustion chamber above that calculated from the quasi-stationary rate. With a sharp decrease in pressure, the combustion rate decreases to a value less than the quasi-stationary rate at the corresponding pressure. The decrease in the combustion rate leads to a decrease in the pressure in the combustion chamber below that calculated from the quasi-stationary rate. At small values of the characteristic relaxation time of the combustion chamber, a sharp decrease in pressure in the combustion chamber will lead to the extinction of the charge combustion.

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Numerical Simulation of Unsteady Gunpowder Combustion at a Rapid Rise in Pressure on the Basis of a Conjugate Combustion Model

Cited by 2 publications

References 6 publications

Experimental and Theoretical Study of Granulated Charge Combustion in a Closed Volume

Experimental and Theoretical Study of Granulated Charge Combustion in a Closed Volume

Study of gas dynamics of combustion of mixed solid fuel under pressure fluctuations on the surface of the fuel

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