Numerical Simulation and Experimental Test on Muzzle Brake Efficiency

Jiang, Kun; Wang, Hao

doi:10.1109/icm.2011.334

Cited by 2 publications

(4 citation statements)

References 3 publications

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“…The study concluded that an impeller with winglets deteriorates the pump characteristic and its efficiency. These results have not been experimentally validated however, and they contradict the measurement results of Jian et al [12] and Gerlach et al [14].…”

Section: Winglets and Front Shroudscontrasting

confidence: 75%

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Design Parameters of Vortex Pumps: A Meta-Analysis of Experimental Studies

et al. 2017

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Vortex pumps can impel solid-containing fluids and are therefore widely applied, from wastewater transport to the food industry. Despite constant efforts to improve vortex pumps, however, they have remained relatively inefficient compared to conventional centrifugal pumps. To find an optimized design of vortex pumps, this paper provides a systematic analysis on experimental studies that investigated how variations in geometric parameters influence vortex pump characteristics, in particular the pump head, the pressure coefficient and the efficiency for best point operation. To this end, an extensive literature search was conducted, and eighteen articles with 53 primary investigations were identified and meta-integrated. This showed that it is not yet clarified how vortex pumps operate. Two different assumptions of the underlying operating principle of a vortex pump lead to diverging design principles. From the results of this meta-analysis, we deduce recommendations for a more efficient design of a vortex pump and emphasize further aspects on the underlying operating principle of a vortex pump.

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Section: Winglets and Front Shroudscontrasting

confidence: 75%

“…Jiang et al [12] examined the impact of adding winglets to a semi-open impeller. The study compared two different winglet depths to an impeller without winglets.…”

Section: Winglets and Front Shroudsmentioning

confidence: 99%

Design Parameters of Vortex Pumps: A Meta-Analysis of Experimental Studies

et al. 2017

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“…By distributing the flow of gunpowder gas in the after-effect period 6-10 hanging the direction of air velocity to produce an overall forward impulse, this impulse can provide a recoil force to the gun body and reduce the recoil impulse generated by the corresponding combined force of the gun bore to reduce the firing load to achieve the recoil effect, which effectively improves the firing accuracy [11][12][13][14][15][16][17][18] .Due to the complexity of the structure of the gun itself and the difficulty in mastering hydrodynamics, as well as the large amount of human and material resources required to perform weapon testing in the near-flow field and far-flow length, the validation cost is very high. There are very few calculations and simulations on double-chambered brakes and fewer experiments [19][20][21] to reveal the flow field changes caused by the muzzle retractor. In the last decade or so, computational fluid dynamics (hereafter referred to as "CFD") 22-28 has developed greatly, replacing some approximate computational and graphical methods in classical fluid dynamics.…”

mentioning

confidence: 99%

“…Due to the complexity of the structure of the gun itself and the difficulty in mastering hydrodynamics, as well as the large amount of human and material resources required to perform weapon testing in the near-flow field and far-flow length, the validation cost is very high. There are very few calculations and simulations on double-chambered brakes and fewer experiments [19][20][21] to reveal the flow field changes caused by the muzzle retractor. In the last decade or so, computational fluid dynamics (hereafter referred to as "CFD") 22-28 has developed greatly, replacing some approximate computational and graphical methods in classical fluid dynamics.…”

mentioning

confidence: 99%

Numerical simulation and experiment of double chamber brake based on CFD

Yuhao,

Pu,

Qiang

2023

Sci Rep

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The artillery firing process will instantly produce high-temperature and high-pressure gunpowder gas, this process will produce shock waves. The gunpowder gas has a limited effect on the projectile during the firing and ballistic after-effects period, however, it has a very obvious effect on the stability of the gun body, and the reduction of the stability of the gun body directly affects the firing accuracy and the safety of the firing personnel. Based on the method of Computational Fluid Dynamics (CFD), numerical simulation is carried out, and the structure and flow parameters of the muzzle flow field are obtained by using three-dimensional Euler's control equation, gas equation of state, and k-epsilon model, as well as dynamic mesh technology. By comparing the flow parameters of the brake before and after optimization, and analyzing the results obtained from the 8-round firing experiments, the efficiency of the optimized brake is increased by 8.2%, and the deviation between the experimental data and the simulation results is only 10.5%, which not only verifies the accuracy of the numerical simulation calculations but also verifies the optimized brake's good retracting effect. The results of the study can provide a reference for the optimization and design of the double-chamber brake.

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Numerical Simulation and Experimental Test on Muzzle Brake Efficiency

Cited by 2 publications

References 3 publications

Design Parameters of Vortex Pumps: A Meta-Analysis of Experimental Studies

Design Parameters of Vortex Pumps: A Meta-Analysis of Experimental Studies

Numerical simulation and experiment of double chamber brake based on CFD

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