Mantis Shrimp-Inspired Underwater Striking Device Generates Cavitation

Li, Xinxin; Li, Xiaosong; Hou, Xin; Li, Yuanzhe; Meng, Yonggang; Ma, Liran; Tian, Yu

doi:10.1007/s42235-022-00227-8

Cited by 7 publications

(3 citation statements)

References 50 publications

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“…The model with a position parameter α of 10% displayed optimal cavitation performance. Li [112] proposed a vortex control method based on the leading edge bionic convex junction, providing insights into the control mechanism's impact on the flow structure and cavitation morphology of the winding hydrofoil. The study confirmed that pressure pulsation primarily originates from cavity volume acceleration, and the bionic hydrofoil effectively suppressed cavitation by reducing pressure pulsation.…”

Section: Changing the Blade Structurementioning

confidence: 99%

Research Progress on Identification and Suppression Methods for Monitoring the Cavitation State of Centrifugal Pumps

Zhu,

Zhou,

et al. 2023

Water

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Cavitation is a detrimental phenomenon in hydraulic machinery, adversely impacting its performance, inducing vibration and noise, and leading to corrosion damage of overflow components. Centrifugal pump internal cavitation will lead to severe vibration and noise, and not only will the performance of hydraulic machinery be adversely affected but the impact generated by the collapse of the vacuole will also cause damage to the impeller wall structure, seriously affecting the safety of the equipment’s operation. To prevent the generation and development of internal cavitation in centrifugal pumps, to prevent the hydraulic machinery from being in a state of cavitation for a long time, to avoid the failure of the unit, and to realize the predictive maintenance of centrifugal pumps, therefore, it is of great significance to research the methods for monitoring the cavitation of hydraulic machinery and the methods for suppressing the cavitation. This paper comprehensively describes the centrifugal pump cavitation mechanism and associated hazards. It also discusses the current state of centrifugal pump cavitation monitoring methods, including commonly used approaches such as the flow-head method, high-speed photography, pressure pulsation method, acoustic emission method, and vibration method. A comparative analysis of these methods is presented. Additionally, the paper explores signal characterization methods for centrifugal pump cavitation, including time-domain feature extraction, frequency-domain feature extraction, and time–frequency-domain feature extraction. The current research status is elaborated upon. Moreover, the paper presents methods to mitigate cavitation and prevent its occurrence. Finally, it summarizes the ongoing research on identifying and determining the cavitation state in centrifugal pumps and offers insights into future research directions.

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Section: Changing the Blade Structurementioning

confidence: 99%

Research Progress on Identification and Suppression Methods for Monitoring the Cavitation State of Centrifugal Pumps

Zhu,

Zhou,

et al. 2023

Water

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show abstract

“…In nature, pistol shrimp [60][61][62][63][64][65][66][67] and mantis shrimp [68][69][70] are known to create cavitations, and the mechanical properties of their claws has also been investigated [71]. Although there was no term of "cavitation" in the references [72,73], the noise [72] and the water jet velocity [73] of the snapping pistol shrimp claw were measured.…”

Section: Introductionmentioning

confidence: 99%

Development of a Cavitation Generator Mimicking Pistol Shrimp

Soyama,

Tanaka,

Takiguchi

et al. 2024

Biomimetics

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Pistol shrimp generate cavitation bubbles. Cavitation impacts due to bubble collapses are harmful phenomena, as they cause severe damage to hydraulic machinery such as pumps and valves. However, cavitation impacts can be utilized for mechanical surface treatment to improve the fatigue strength of metallic materials, which is called “cavitation peening”. Through conventional cavitation peening, cavitation is generated by a submerged water jet, i.e., a cavitating jet or a pulsed laser. The fatigue strength of magnesium alloy when treated by the pulsed laser is larger than that of the jet. In order to drastically increase the processing efficiency of cavitation peening, the mechanism of pistol shrimp (specifically when used to create a cavitation bubble), i.e., Alpheus randalli, was quantitatively investigated. It was found that a pulsed water jet generates a cavitation bubble when a shrimp snaps its claws. Furthermore, two types of cavitation generators were developed, namely, one that uses a pulsed laser and one that uses a piezo actuator, and this was achieved by mimicking a pistol shrimp. The generation of cavitation bubbles was demonstrated by using both types of cavitation generators: the pulsed laser and the piezo actuator.

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“…The phenomenon was discovered as occurring on screw propellers in the 1890s [2]. In nature, pistol shrimp [3][4][5][6][7][8][9][10] and mantis shrimp [11][12][13] are known to create cavitations, and the mechanical properties of their claws has also been investigated [14]. Although there was no term of "cavitation" in the references [15,16], the noise [15] and the water jet velocity [16] of the snapping pistol shrimp claw were measured.…”

Section: Introductionmentioning

confidence: 99%

Development of Cavitation Generator Mimicing Pistol Shrimp

Soyama,

Tanaka,

Takiguchi

et al. 2023

Preprint

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Pistol shrimps generate cavitation bubbles. Cavitation impacts due to bubble collapses are harmful phenomena, as they cause severe damage to hydraulic machineries, such as pumps and valves. However, cavitation impacts can be utilized for mechanical surface treatment to improve the fatigue strength of metallic materials, which is called “cavitation peening”. Through conventional cavitation peening, a cavitation is generated by a submerged water jet, i.e., a cavitating jet or a pulsed laser. The fatigue strength of magnesium alloy when treated by the pulsed laser is larger than that of the jet. In order to drastically increase the processing efficiency of cavitation peening, the mechanism of pistol shrimp (specifically when used to create a cavitation bubble), i.e., alpheus randalli, was quantitatively investigated. It was found that a pulsed water jet generates a cavitation bubble when a shrimp snaps its claws. Furthermore, two types of cavitation generators were developed, namely, one that uses a pulsed laser and one that uses a piezo actuator, and this was achieved by mimicing a pistol shrimp.

show abstract

Mantis Shrimp-Inspired Underwater Striking Device Generates Cavitation

Cited by 7 publications

References 50 publications

Research Progress on Identification and Suppression Methods for Monitoring the Cavitation State of Centrifugal Pumps

Research Progress on Identification and Suppression Methods for Monitoring the Cavitation State of Centrifugal Pumps

Development of a Cavitation Generator Mimicking Pistol Shrimp

Development of Cavitation Generator Mimicing Pistol Shrimp

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