Numerical simulation of underwater explosion cavitation characteristics based on phase transition model in compressible multicomponent fluids

Yu, Jun; Liu, Jianhu; Wang, Hai-Kun; Wang, Jun; Zhang, Lunping; Liu, Guozhen

doi:10.1016/j.oceaneng.2021.109934

Cited by 25 publications

(8 citation statements)

References 21 publications

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“…However, due to the limitations imposed by the theoretical assumptions of acoustic finite elements, these methods are only suitable for qualitative analysis of cavitation in the weak shock wave environment of far-field underwater explosions. Their primary advantage lies in rapidly predicting the initiation time and approximate range of cavitation, but they cannot accurately forecast the evolution process and internal characteristics of the cavitation domain 13 – 16 . Interface tracking methods assume the presence of a distinct interface between the liquid and vapor phases of water, employing an iterative procedure to capture this interface 17 , 18 .…”

Section: Introductionmentioning

confidence: 99%

“…A phase transition model based on the four-equation system has been used to handle the thermodynamic equilibrium between the liquid phase and its corresponding vapor phase 27 – 31 . This four-equation model with phase transition has been employed to investigate the evolution of cavitation in underwater explosions, enabling the capture of the physical characteristics of the flow field within the cavitation domain 13 , 14 . Additionally, Zhang proposed a phase transition model based on the five-equation system, incorporating temperature and chemical relaxation with the monotonic mixture speed of sound 32 .…”

Section: Introductionmentioning

confidence: 99%

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Study on dynamic characteristics of cavitation in underwater explosion with large charge

Yu,

Zhang,

Hao

et al. 2024

Sci Rep

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Underwater explosions (UNDEX) generate shock waves that interact with the air–water interface and structures, leading to the occurrence of rarefaction waves and inducing cavitation phenomena. In deep-water explosions, complex coupling relationships exist between shock wave propagation, bubble motion, and cavitation evolution. The shock wave initiates the formation of cavitation, and their growth and collapse are influenced by the pressure field. The collapsing bubbles generate additional shock waves and fluid motion, affecting subsequent shock wave propagation and bubble behavior. This intricate interaction significantly impacts the hydrodynamic characteristics of deep-water explosions, including pressure distribution, density, and phase changes in the surrounding fluid. In this paper, we utilize a two-fluid phase transition model to capture the evolution of cavitation in deep-water explosions. Our numerical results demonstrate that the introduction of a two-phase vapor–liquid phase change model is necessary to accurately capture scenarios involving prominent evaporation or condensation phenomena. Furthermore, we find that the cavitation produced by the same charge under different explosion depths exhibits significant differences, as does the peak value of cavitation collapse pressure. Similarly, the cavitation produced by different charge quantities under the same explosion depth varies, and the relationship between cavitation volume and charge quantity is not a simple linear increase. The research methods and results presented in this paper provide an important reference for studying the dynamic characteristics of deep-water explosions.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Study on dynamic characteristics of cavitation in underwater explosion with large charge

Yu,

Zhang,

Hao

et al. 2024

Sci Rep

Self Cite

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“…However, the theoretical assumptions of the acoustic finite element approach impose constraints, limiting its applicability to qualitatively analyze cavitation under weak shock wave conditions in the far field of underwater explosions. Its primary advantage lies in rapidly predicting the initiation time and approximate range of cavitation, but it cannot accurately forecast the evolutionary process and internal characteristics of the cavitation domain [13][14][15][16]. In contrast, interface tracking methods assume the existence of a distinct interface between the liquid and vapor phases of water and employ an iterative procedure to capture this interface [17,18].…”

Section: Introductionmentioning

confidence: 99%

“…Another approach utilizes a four-equation system with a phase transition model to ensure thermodynamic equilibrium between the liquid and vapor phases [28,29]. This four-equation model with phase transitions has been successfully applied to study cavitation evolution in underwater explosions, effectively capturing the physical characteristics of the flow field within the cavitation domain [13,14]. Additionally, Zhang proposed an alternative phase transition model based on a five-equation system, which incorporates temperature and chemical relaxation with a monotonic mixture speed of sound [30].…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of a Rigid Wall on Cavitation in Underwater Explosions Near the Free Surface

Yu,

Zhang,

Zhao

et al. 2024

Applied Sciences

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A two-fluid, phase transition-based multiphase flow model is employed to simulate the dynamics of phase transition between liquid and vapor phases during shock wave and rarefaction wave propagation in underwater explosions. The aim is to understand the influence of a rigid wall on the cavitation evolution process and the cavitation collapse load, considering various charge quantities and water depths. The evolution of crucial physical qualities, such as the density, pressure, and the cavitation domain, within the flow field are analyzed and summarized. The presence of a rigid wall is found to significantly impact the cavitation evolution process in underwater explosions. It affects the shape, size, and dynamics of the cavitation domain, as well as the interaction between the explosion and the surrounding fluid. Specifically, the reflected wave on the wall influences the cavitation collapse load, leading to notable differences in the collapse time and collapse pressure compared to free-field conditions. Under different operating conditions, the size and position of the cavitation domain exhibit distinct changes. The proximity of the rigid wall results in unique patterns of cavitation domain evolution, which in turn lead to variations in the pressure distribution and the emergence of new cavitation regions. The findings of this study provide valuable insights into the behavior of cavitation and atomization induced by underwater explosions near the free surface. The understanding gained from these investigations can contribute to the development of effective safety measures and protective strategies in marine and underwater engineering applications. By accurately predicting and mitigating the effects of cavitation, it is possible to enhance the design and operation of underwater structures, ensuring their integrity and minimizing the potential risks associated with underwater explosions.

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“…Although there is research on the flow instability induced by cavitation [11], the characteristics of flow instability induced by cavitation in the inducer still need to be further explored. Since cavitation involves complex phenomena, such as turbulence [12], phase transition [13], and two-phase flow [14], it is difficult to achieve the expected research goals through theoretical analyses and numerical simulations; experiments are still the best research methods. One of the most important problems encountered in improving credible inducers for turbopumps involves the instability of the cavitating flow [15] in the centrifugal pump [16].…”

Section: Introductionmentioning

confidence: 99%

Experimental Study on Unsteady Cavitating Flow and Its Instability in Liquid Rocket Engine Inducer

Wang

Feng

Liu

et al. 2022

JMSE

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To study instability in the unsteady cavitating flow in a liquid rocket engine inducer, visualization experiments of non-cavitating and cavitating flows inside a model inducer were carried out at different flow conditions. Visual experiments were carried out to capture the evolution of non-cavitating and cavitating flows in a three-bladed inducer by using a high-speed camera. The external characteristic performance, cavitation performance, and pressure pulsation were analyzed based on the observation of non-cavitation and cavitation development and their instabilities. Under non-cavitation conditions, the change of flow rate has a significant impact on the pressure pulsation characteristics in the inducer. The occurrence of cavitation aggravated the instability of the flow and caused the intensity of pressure pulsation at each measuring point to increase. This cavitation structure has strong instability, and the tail region is often accompanied by shedding cavitation clouds perpendicular to the blade surface.

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Numerical simulation of underwater explosion cavitation characteristics based on phase transition model in compressible multicomponent fluids

Cited by 25 publications

References 21 publications

Study on dynamic characteristics of cavitation in underwater explosion with large charge

Study on dynamic characteristics of cavitation in underwater explosion with large charge

Study on the Influence of a Rigid Wall on Cavitation in Underwater Explosions Near the Free Surface

Experimental Study on Unsteady Cavitating Flow and Its Instability in Liquid Rocket Engine Inducer

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