Numerical analysis of interior ballistics through eulerian-lagrangian approach

Jang, Jinsung; Sung, Hyung-Gun; Roh, Tae‐Seong; Choi, Dong-Whan

doi:10.1007/s12206-013-0619-4

Cited by 15 publications

(3 citation statements)

References 4 publications

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“…3. These two parameters are typically obtained from pressure and velocity variation curves with time and barrel length, which is the solution to the internal ballistics problem for a given gun system [6].…”

Section: Fig 2 Propellant Grain Shapesmentioning

confidence: 99%

Numerical Simulation and Experimental Study of Internal Ballistics Parameters for Howitzer Field Guns

Alhaj¹,

Abuuznien²,

Elmokhtar³

et al. 2021

JKUES

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Howitzer Gun is a type of large-caliber artillery gun that typically utilizes a mixture of propellant grain shapes to control the burning inside the gun, and to impart the prescribed velocity to the projectile with the smallest mass of charge without exceeding the maximum allowable pressure. In this paper, a mathematical model has been developed to predict the main internal ballistic parameters i.e., Maximum Pressure (Max. P) and Muzzle Velocity (MV) for artillery howitzer guns. The propellant charge utilized is a single-base propellant using a mixture of dual-shape grain namely, tubular and multi-tubular seven-hole shapes. The mathematical model was solved numerically using the Runge-Kutta method in MATLAB environment for a 130 mm howitzer field gun which was chosen as a test case. The simulation results were obtained in terms of several plots showing the effect of grain shape and grain mixture ratio on the Max. P and MV along the gun barrel. Furthermore, the optimum mixture ratio gives a slightly reduced MV with a significant reduction in Max. P has been determined graphically and compared with experimental data taken from the test firing of the gun. The simulation results showed good agreement with the experimental ones (less than 10% numerical error). The proposed model can be used in the analysis and optimization of other similar gun systems taking into account the right input data for both guns, and propellants.

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Section: Fig 2 Propellant Grain Shapesmentioning

confidence: 99%

Numerical Simulation and Experimental Study of Internal Ballistics Parameters for Howitzer Field Guns

Alhaj¹,

Abuuznien²,

Elmokhtar³

et al. 2021

JKUES

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“…The components of propellant charge structure are basically including the main propellant grain charge and center ignition-spread tube. The dynamics model of main propellant charge and basic hypothesis are as follows [21][22][23][24][25]:…”

Section: Interior Ballistic Two-phase Flow Theorymentioning

confidence: 99%

“…Without considering the stumble movement of the gun.The basic equations of the interior ballistic two-phase flow of main propellant charge in chamber and gun barrel are as Eq. (1)[16,[21][22][23][24][25]:…”

mentioning

confidence: 99%

Study on Dynamic Burning Rate Equation of Propellant

Zhang

Rui

Wang

et al. 2017

Prop., Explos., Pyrotech.

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Aiming at the difficulty that the actual burning law of propellant in the gun bore couldn't be described exactly by static burning rate equation in the closed-bomb, propellant dynamic burning rate equation and its acquisition method were established in the paper, which are based on static burning rate equation and considering burning gas flow and loading density influence factors in bore. A numerical code for interior ballistic two-phase flow was successfully developed. And corresponding firing tests were also carried out. The comparison of simulations with interior ballistic code and firing test results show that the propellant dynamic burning rate equation makes the maximum errors of muzzle velocity and pressure in breech decreased from 2.97 % to 0.75 % and from 6.68 % to 0.38 %, respectively. This method not only improves simulation precision of gun muzzle velocity and pressure significantly, but also provides a means to improve the design accuracy for interior ballistic performance.

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