Simulation and Experiment Study for the Underwater Focusing Shockwave

Li, Ning; Lei, Kaizhuo; Huang, Jian; Chen, Jianfeng

doi:10.1109/icece.2010.1022

Cited by 4 publications

(4 citation statements)

References 2 publications

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“…In the experiment, intense sound pulse is produced by underwater plasma sound source, utilizing the electrohydraulic effect [1,2]. Underwater plasma intense sound pulse source system is made up with charging-discharging circuit, trigger switch, discharge switch, transmission cables and control unit.…”

Section: A Experiments Conditionsmentioning

confidence: 99%

“…According to the relevant records, each operating frequency band of the most sonar worldwide will be covered by underwater explosion sound waves, carrying quite high acoustic power ranging from a few tens of Hertz to more than 50kHz [1,2,3]. Therefore, intense sound pulse that generated by underwater explosions, acting as a sonar jammer, will make sonar system lose target contact to achieve better counterwork effect because it has apparent interception saturating, signal blocking and suppressing effects on sonar receiving system.…”

Section: Introductionmentioning

confidence: 98%

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Response characteristics of acoustic transducer in intense sound pulse

Qiao¹,

Lei²,

Zhang³

et al. 2011

2011 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC)

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To evaluate the effect of underwater intense sound pulse on sonar receiving system, the response characteristics of acoustic transducer in intense sound pulse is studied. The admittance-frequency characteristic of typical transducer is measured with an impedance analyzer, and a lumped parameter equivalent circuit model of typical transducer is established based on admittance circle diagram method. With this circuit model and software MultiSim, the response characteristic is analyzed in a circuit model simulation method, and the simulation shows that an oscillation stimulated by intense sound pulse appears in the equivalent circuit. Then water tank verification experiment is carried out with underwater plasma sound source. In the experiment, an intense sound pulse leads the transducer to an excited oscillation about 40ms, which coincides well with the simulation results and validates the correction of equivalent circuit model. Analysis indicates that intense sound pulse has an apparent jamming effect on acoustic transducer, and brings sonar receiving system into a blinding status.

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Section: A Experiments Conditionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 98%

Response characteristics of acoustic transducer in intense sound pulse

Qiao¹,

Lei²,

Zhang³

et al. 2011

2011 IEEE International Conference on Signal Processing, Communications and Computing (ICSPCC)

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“…Unfortunately, due to the more expensive equipment and many different kinds of suitable equipment needed, as well as the high sensitivity of equipment required, it results in a big cost of the experiments. Therefore, the modeling and calculation of the intense sound field distribution of underwater plasma sound source have become especially important [7].…”

Section: Introductionmentioning

confidence: 99%

“…The definitions of these coefficients a r k,l , C r k , and d r kml in (5), (7), and (8) can be found in [8][9][10][11]14].…”

Section: Brief Introduction Of Weno Scheme and Weno-symoo Schemementioning

confidence: 99%

An Optimized Symmetric WENO Method-Based Numerical Simulation of Intense Sound Field Generated by Underwater Plasma Sound Source

Lei

Liu

et al. 2018

Journal of Sensors

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The intensive pulse sound wave can be generated by the underwater plasma sound source (UPSS) based on the discharge of the underwater high voltage. The distribution of the sound field is prominently nonlinear. In this paper, the sound field of the intensive UPSS is described by the integral two-dimensional axisymmetric unsteady Euler equations firstly. In order to solve the Euler equations numerically, an optimized fifth-order symmetric WENO (weighted essentially nonoscillatory) method based on the three templates is proposed which is called WENO-SYM3. Without increasing the number of candidate templates, a new symmetric template structure can be obtained by expanding the second template and shifting the third one backwards for one space. The method is validated through numerical examples and experiments, and the results show that WENO-SYM3 has a high distinguished accuracy; meanwhile, its nonphysical oscillations are not obvious. The experimental results are basically the same as the calculation results, and the maximum error is around 3%.

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