Numerical modeling and investigation of two-phase reactive flow in a high-low pressure chambers system

Cheng, Cheng; Zhang, Xiaobing

doi:10.1016/j.applthermaleng.2016.01.046

Cited by 19 publications

(4 citation statements)

References 17 publications

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“…A fourth-order Runge-Kutta method is used to solve the interior ballistic model of the ventilated launch [21,22]. The gas-liquid flow field solution is based on the CFD software FLUENT.…”

Section: Numerical Methods and Initial Boundary Conditionsmentioning

confidence: 99%

Effect of Starting Conditions on the Internal Flow Field and Interior Ballistic Performance of an Underwater Ventilated Launch

Zhang,

Hu,

2023

JMSE

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As one of the future main directions for underwater artillery, a ventilated launch can significantly reduce the huge water resistance during the underwater launching process. This paper aims to clarify the effect of starting conditions on the internal flow field and interior ballistic performance of an underwater ventilated launcher. Firstly, a three-dimensional unsteady model of gas–liquid two-phase flow is established. Following, an interior ballistic program of the underwater ventilated launch is developed. A coupling model between interior ballistic and gas–liquid interaction is then established, accounting for the projectile’s dynamic boundary effect and gas–liquid interaction. Subsequently, the simulation accuracy of the model is confirmed. Finally, the effect of parameter adjustments on the internal flow field and interior ballistic properties are contrasted and examined by altering the starting conditions. The results indicate that adjusting the gas injection pressure and projectile starting pressure can effectively regulate the drainage and resistance reduction effect, thereby obtaining the desired interior ballistic performance of the underwater ventilated launch. The findings offer recommendations for future underwater launchers.

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“…A fourth-order Runge-Kutta method is used to solve the interior ballistic model of the ventilated launch [21,22]. The gas-liquid flow field solution is based on the CFD software FLUENT.…”

Section: Numerical Methods and Initial Boundary Conditionsmentioning

confidence: 99%

Effect of Starting Conditions on the Internal Flow Field and Interior Ballistic Performance of an Underwater Ventilated Launch

Zhang,

Hu,

2023

JMSE

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“…The interior ballistic model of the small caliber rarefaction wave gun is a system of ordinary differential equations. It can be solved by a fourth Runge-Kutta method and coded with C programming language [24,25]. The muzzle flow field with gunshot residue is simulated based on ANSYS Fluent platform.…”

Section: Solution Schemementioning

confidence: 99%

Numerical Investigation on the Gas‐Solid Flow in Blast Flow Fields Induced by a High‐Speed Body

Cheng

Wang

Huang

et al. 2022

Propellants Explo Pyrotec

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As one of the critical phenomena during the firing of guns, propellant combustion creates an expanding gas plume with smoke containing the combustion residues. This paper aims to clarify the influence of gunshot residue particles on muzzle flow. Firstly, a two-dimensional gas-solid two-phase model is established to describe the muzzle flow with gunshot residue for a small caliber rarefaction wave gun. And a discrete phase model is used to track particle trajectories for the dilute gas-solid flow. Then the different development processes are discussed between the pure-gas and the gas-solid flow. Finally, the particle diameter and the mass fraction of particles are investigated to show the effects on the development process of the muzzle flow with gunshot resides. The results show that particles greatly influence the main flow parameters in the muzzle flow with gunshot residue. The gas velocity decreases due to the interaction between the particles and the gas. This paper provides a valuable reference for the study of muzzle flow.

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“…Based on the assumptions above, the interior ballistic model is composed of the following equations. The physical process in the combustion chamber is described by lumped parameter method, which can be found in our previous work [25,26]. a) Burning function…”

Section: Interior Ballistics Model Of the Rarefaction Wave Gunmentioning

confidence: 99%

Numerical Simulation and Analysis of Muzzle Flow During a Rarefaction Wave Gun Firing

Wang

Cheng

Zhang

et al. 2021

Propellants Explo Pyrotec

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Rarefaction wave gun can significantly reduce the recoil and the barrel heat without affecting projectile velocity during the launching process. This paper aims to improve the understanding of the muzzle flow characteristics during a rarefaction wave gun firing and clarify the different ballistic behaviors between the rarefaction wave gun and the traditional gun. First, the mathematical models and the numerical methods of the muzzle flow with the interior ballistic process were established. Then, the numerical simulation results were compared with the experimental data to validate the reliability and accuracy. Next, the rarefaction wave propagation behavior was described, and the interior ballistic process of the rarefaction wave gun was compared with that of the traditional gun. Then the development law of the muzzle flow field for the rarefaction wave gun coupled with the interior ballistics process was studied. Finally, the different detailed results of the muzzle flow between the traditional gun and the rarefaction wave gun were investigated. The development processes of the muzzle flow in both guns are generally similar, but the strength of the main flow parameters and the ballistic performances for the rarefaction wave gun are smaller than that for the traditional gun due to the rarefaction wave influence. This paper could provide a valuable reference for the research and design on the rarefaction wave gun.

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Numerical modeling and investigation of two-phase reactive flow in a high-low pressure chambers system

Cited by 19 publications

References 17 publications

Effect of Starting Conditions on the Internal Flow Field and Interior Ballistic Performance of an Underwater Ventilated Launch

Effect of Starting Conditions on the Internal Flow Field and Interior Ballistic Performance of an Underwater Ventilated Launch

Numerical Investigation on the Gas‐Solid Flow in Blast Flow Fields Induced by a High‐Speed Body

Numerical Simulation and Analysis of Muzzle Flow During a Rarefaction Wave Gun Firing

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