Experimental Research on the Detonation in Gaseous Mixtures with Suspended Aluminum Particles

Zhang, Xing; Chen, H.; Li, J.; Zhang, S.; Yu, Hongwen

doi:10.1007/978-3-319-91017-8_12

Cited by 1 publication

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References 2 publications

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“…The fully submerged launch means the tube is full of water, and the movement process of the projectile in the tube needs to push away the water column in front of it, the projectile is severely impeded and its muzzle velocity is low as a result. By creating an experimental platform for visualizing the fully submerged firing of a 12.7 mm underwater gun, the evolution of the underwater muzzle flow field was collected and a two-dimensional multiphase flow model was then created on the basis of the experiment, and the working circumstances of single-tube launching with various muzzle velocities and water depths have been carried out for numerical study [15][16]. The sealed launch means a sealing device is added to the muzzle and the body tube of an underwater gun is filled with air, which reduces the resistance to the movement and increases the projectile's muzzle velocity.…”

Section: Introductionmentioning

confidence: 99%

Research on multiphase flow field characteristics of underwater gun double‐tube parallel firing

Zhang

2023

Propellants Explo Pyrotec

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The underwater muzzle flow field formed by the double‐tube launch will interfere with each other, resulting in large changes in the characteristic parameters of the flow field and shock wave morphology. Therefore, the numerical model of three‐dimensional unsteady multiphase flow for underwater gun‐sealed launching was established. Meanwhile, an experimental platform for the underwater sealed launch was built and the rationality of the model was verified. The interior ballistic process compiled by UDF was coupled with the dynamic mesh technology, and the VOF multiphase flow model integrated with the Schnerr‐Sauer cavitation model was chosen to numerically calculate the muzzle flow field of the 30 mm underwater gun double‐tube parallel launch, and the numerical results were compared to those of the single‐tube launch. The results show that the gas is expelled from the muzzle and rapidly expands to form a gas cavity, and the “necking” phenomenon of the gas cavity occurs at 0.2 ms, while the Mach disk structure has formed. Due to the mutual interference between the flow fields formed by each tube, the diameters of the Mach disk are slightly different, and the flow field structure has a certain asymmetry in the evolution process. The core area of the shock wave is bowl‐shaped of the single‐tube launch, while it is not completely filled of the double‐tube launch. Within 0.5 ms, the diameter of the Mach disk increases monotonously when the single‐tube is launched, while it first increases and then decays by a double‐tube.

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Section: Introductionmentioning

confidence: 99%

Research on multiphase flow field characteristics of underwater gun double‐tube parallel firing

Zhang

2023

Propellants Explo Pyrotec

View full text Add to dashboard Cite

show abstract

Experimental Research on the Detonation in Gaseous Mixtures with Suspended Aluminum Particles

Cited by 1 publication

References 2 publications

Research on multiphase flow field characteristics of underwater gun double‐tube parallel firing

Research on multiphase flow field characteristics of underwater gun double‐tube parallel firing

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