Numerical Simulation of Underwater Shock Wave Propagation in the Vicinity of Rigid Wall Based on Ghost Fluid Method

Shi, Ruchao; Huang, Ruijie; Wang, Guangyong; Wang, You-Kai; Yong-chi, LI

doi:10.1155/2015/467376

Cited by 3 publications

(2 citation statements)

References 39 publications

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“…The approximate velocity was calculated from Figure 15 as 1520 and 1480 m/s for the incident and reflection shock waves, respectively. The reflection shock wave velocity is significantly lower than that of the incident shock wave because some shock wave energy is lost in the collision with the rigid wall [31]. Moreover, after the reflection superposition process, the superposition effect disappears for the state behind the reflection wave, and the perturbation reverts to a constant value.…”

Section: Characteristics Of the Reflection Shock Wavementioning

confidence: 99%

Normal Reflection Characteristics of One-Dimensional Unsteady Flow Shock Waves on Rigid Walls from Pulse Discharge in Water

Dong

Zhao

Niu

2017

Shock and Vibration

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Strong shock waves can be generated by pulse discharge in water, and the characteristics due to the shock wave normal reflection from rigid walls have important significance to many fields, such as industrial production and defense construction. This paper investigates the effects of hydrostatic pressures and perturbation of wave source (i.e., charging voltage) on normal reflection of one-dimensional unsteady flow shock waves. Basic properties of the incidence and reflection waves were analyzed theoretically and experimentally to identify the reflection mechanisms and hence the influencing factors and characteristics. The results indicated that increased perturbation (i.e., charging voltage) leads to increased peak pressure and velocity of the reflected shock wave, whereas increased hydrostatic pressure obviously inhibited superposition of the reflection waves close to the rigid wall. The perturbation of wave source influence on the reflected wave was much lower than that on the incident wave, while the hydrostatic pressure obviously affected both incident and reflection waves. The reflection wave from the rigid wall in water exhibited the characteristics of a weak shock wave, and with increased hydrostatic pressure, these weak shock wave characteristics became more obvious.

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Section: Characteristics Of the Reflection Shock Wavementioning

confidence: 99%

Normal Reflection Characteristics of One-Dimensional Unsteady Flow Shock Waves on Rigid Walls from Pulse Discharge in Water

Dong

Zhao

Niu

2017

Shock and Vibration

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“…The vibration problems of fluid-filled shell systems are also common and important in many fields [6][7][8][9][10]. It is well known that vibration not only causes severe noise pollution, but also affects the normal working of equipment installed on piping systems.…”

Section: Introductionmentioning

confidence: 99%

Study on Vibrational Power Flow Propagation Characteristics in a Laminated Composite Cylindrical Shell Filled with Fluid

Liu

Xie

2018

Shock and Vibration

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The characteristics of vibrational power flow in an infinite laminated composite cylindrical shell filled with fluid excited by a circumferential line cosine harmonic force are investigated using wave propagation approach. The harmonic motions of the shell and the fluid filled in the shell are described by Love shell theory and acoustic wave equation, respectively. Under the driving force, the vibrational power flow input into the coupled system and the transmission of the power flow carried by different internal forces (moments) of the shell in the axial direction are established. Numerical computations are implemented to investigate the vibrational power flow input and its propagation. It is found that characteristics of the vibrational power flow vary with different circumferential mode orders and frequencies, and the presence of fluid in the shell significantly affects the vibration of the shell structure. Additionally, parametric investigations are carried out to study the effects of the fiber orientation, modulus ratio 11 / 22 , and thickness-to-radius parameter ℎ/ on input power into the coupled system and propagation power along the shell axial direction. This work will provide some guidance for the vibration control of the laminated composite cylindrical shell.

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Visualization of shock wave propagation due to underwater explosion

Rajasekar

Kim

2020

J Vis

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Numerical Simulation of Underwater Shock Wave Propagation in the Vicinity of Rigid Wall Based on Ghost Fluid Method

Cited by 3 publications

References 39 publications

Normal Reflection Characteristics of One-Dimensional Unsteady Flow Shock Waves on Rigid Walls from Pulse Discharge in Water

Normal Reflection Characteristics of One-Dimensional Unsteady Flow Shock Waves on Rigid Walls from Pulse Discharge in Water

Study on Vibrational Power Flow Propagation Characteristics in a Laminated Composite Cylindrical Shell Filled with Fluid

Visualization of shock wave propagation due to underwater explosion

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