Application and Research of the Particle Element Model in Ignition Process of Large-Particle High-Density Charge

Cheng, Shenshen; Wang, Hao; Xue, Songtao; Ruyi, Tao

doi:10.1080/00102202.2020.1840370

Cited by 6 publications

(1 citation statement)

References 11 publications

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“…It is more reasonable to establish a two-phase flow model using Euler-Euler method. The propellant gas phase governing equation is the same as (1) ~(3), and the solid phase governing equation is described as follows [15]: Propellant mass equation…”

Section: The Euler-euler Methodsmentioning

confidence: 99%

Numerical Method of Propulsion Concept: Partially Cut Multiaperture Stick Propellant

Xue

Wang

Cheng

2023

J. Phys.: Conf. Ser.

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The partially cut Multiaperture stick propellant is a new concept charging structure. In this paper, in order to accurately obtain the change and development process of the two-phase flow field in different stages of the whole interior ballistic process in this propulsion concept system, a coupled calculation model of computational interior ballistic is established, which converts the Euler-Lagrange method to the Euler-Euler method. Firstly, at the initial stage of ignition, the Euler-Lagrange method is used to describe the flow field. During this period, the gas phase is based on Euler coordinates, while the solid phase is based on Lagrangian coordinates. After the projectile starts, the partially cut Multiaperture stick propellant is fractured into granular propellant. The flow field is converted to describe by the Euler-Euler method by using the initial mapping method. Finally, by comparing the calculated results with the experimental results, the maximum pressure error is only 0.54%, which verifies the accuracy and effectiveness of the coupling calculation method. It effectively captures the distribution of the physical parameters in the combustion chamber, providing a new research method for the computational interior ballistic of the propulsion concept. Based on this method, the pressure distribution in the propulsion concept system is obtained, and no obvious shock waves and expansion waves are seen, indicating that the charge scheme of partially cut Multiaperture stick propellant can improve launch safety.

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Section: The Euler-euler Methodsmentioning

confidence: 99%

Numerical Method of Propulsion Concept: Partially Cut Multiaperture Stick Propellant

Xue

Wang

Cheng

2023

J. Phys.: Conf. Ser.

Self Cite

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Modelling of internal ballistics of gun systems: A review

Ongaro,

Robbe,

Papy

et al. 2024

Defence Technology

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Numerical simulation research on coupling of gas generator with large aspect ratio and multi-vent

Jiang

Wang

2021

AIP Advances

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The pressure distribution of the combustion system with a large aspect ratio is uneven, and the process of gas flowing out through the vent holes arranged along the axial direction is inconsistent. Therefore, a multi-vent gas generator was designed and experimented. The experimental results show that the vent holes of each group arranged along the axial direction can be opened simultaneously. Based on the explicit dynamics method, the finite element model of the gas generator is established. The interior ballistic program is used to calculate the pressure field, and ABAQUS is used to simulate the structural dynamics. These two are coupled and solved through the subprogram interface VUAMP. The coupled calculation results show that the simulated values are in good agreement with the experimental values, which verifies the accuracy of the coupled model. The response time and opening time of the vent holes decrease with the increase in the propellant mass. The force analysis of the axial motion process is carried out. In the early stage, the frictional resistance and gas thrust rise concurrently with the improvement of gas pressure, but the influence of the former gradually diminishes compared with the latter. In the later stage, the impact of reaction force provided by rubber cushion is greater than that of gas thrust and frictional resistance. The maximum compression deformation of rubber cushion is less affected by the propellant mass, which effectively plays the role of buffering and braking.

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Application and Research of the Particle Element Model in Ignition Process of Large-Particle High-Density Charge

Cited by 6 publications

References 11 publications

Numerical Method of Propulsion Concept: Partially Cut Multiaperture Stick Propellant

Numerical Method of Propulsion Concept: Partially Cut Multiaperture Stick Propellant

Modelling of internal ballistics of gun systems: A review

Numerical simulation research on coupling of gas generator with large aspect ratio and multi-vent

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