Cavitation dynamics and flow aggressiveness in ultrasonic cavitation erosion

Du, Jianhua; Chen, Fengjun

doi:10.1016/j.ijmecsci.2021.106545

Cited by 45 publications

(15 citation statements)

References 36 publications

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“…Acoustic signals in time–frequency domain were established to characterize the ultrasonic field when bubbles grew, oscillated, and collapsed [21] . Polyvinylidene fluoride (PVDF) sensor and hydrophone are commonly used to measure ultrasonic field signals [21] , [22] , [23] , which can convert acoustic signals generated by bubble oscillation into electrical signals.…”

Section: Introductionmentioning

confidence: 99%

Dual-frequency multi-angle ultrasonic processing technology and its real-time monitoring on physicochemical properties of raw soymilk and soybean protein

Zhang

Xue

et al. 2021

Ultrasonics Sonochemistry

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Highlights Dual-frequency multi-angle ultrasound was used for processing of raw soymilk. Monitored ultrasonic field intensity of 40 + 20 kHz 0° treatment was the largest. The 40 + 20 kHz 45° treatment maximally increased soybean protein content. Flavor of soymilk was improved by dual-frequency multi-angle ultrasonic treatment.

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Section: Introductionmentioning

confidence: 99%

Dual-frequency multi-angle ultrasonic processing technology and its real-time monitoring on physicochemical properties of raw soymilk and soybean protein

Zhang

Xue

et al. 2021

Ultrasonics Sonochemistry

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“…The micro‐bubble nucleus is activated by ultrasonic ruptures in the electrolyte, releasing heat and high pressure. At the same time, the mechanical effects of ultrasonic cavitation will produce micro‐jet and shock waves 45 . Micro‐jet and shock waves endow charged particles with energy, and the charged particles have a higher velocity of motion after the energy is transferred, and high‐speed motion increases the possibility of particles colliding with each other.…”

Section: Resultsmentioning

confidence: 99%

Effect of ultrasonic field on the performance of an iron‐vanadium flow battery with non‐aqueous deep eutectic solvent electrolyte

Sun

Zhang

Zhou

et al. 2022

Intl J of Energy Research

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The non-aqueous redox flow battery (NARFB) has received extensive attention due to its unique advantages, for example, wide electrochemical window and potentially high energy density. However, the low performance of NARFB still hinders its wide application. Our previous research studies have shown that the exertion of external fields is a promising solution for improving cell performance. In this work, firstly, cyclic voltammetry (CV) is used to study the influence of ultrasonic power density on V(III)/V(II) and Fe(II)/Fe(III) redox couples on transport and electrochemical characteristics in the deep eutectic solvent (DES), which functions as the electrolyte of a NARFB. It is found that adding ultrasonic field to the DES electrolyte is an effective method to enhance mass transfer by accelerating the movement of ions. With the change of ultrasonic power density, the viscosity decreased by more than 10%. The conductivity increased from 8.58 usÁcm À1 at 15 C without ultrasonic power to 14.81 usÁcm À1 at 35 C and with 0.28 WÁcm À2 ultrasonic power density. Then

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“…In acoustic cavitation, owing to the effect of the acoustic field on the growth and collapse of bubbles, the P ∞ and P g 0 should be modified [ 39 , 40 ].

where P 0 is the static pressure and P(t) is the applied acoustic field.…”

Section: Methodsmentioning

confidence: 99%

Effects of In-Process Ultrasonic Vibration on Weld Formation and Grain Size of Wire and Arc Additive Manufactured Parts

et al. 2022

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Wire and arc additive manufacturing (WAAM) is a competitive technique, which enables the fabrication of medium and large metallic components. However, due to the presence of coarse columnar grains in the additively manufactured parts, the resultant mechanical properties will be reduced, which limits the application of WAAM processes in the engineering fields. Grain refinement and improved mechanical properties can be achieved by introducing ultrasonic vibration. Herein, we applied ultrasonic vibration to the WAAM process and investigated the effects of wire feed speed, welding speed, and ultrasonic amplitude on the weld formation and grain size during ultrasonic vibration. Finally, a regression model between the average grain size and wire feed speed, welding speed, and ultrasonic amplitude was established. The results showed that due to the difference in heat input and cladding amount, wire feed speed, welding speed, and ultrasonic amplitude have a significant influence on the weld width and reinforcement. Excessive ultrasonic amplitude could cause the weld to crack during spreading. The average grain size increased with increasing wire feed speed and decreasing welding speed. With increasing ultrasonic amplitude, the average grain size exhibited a trend of decreasing first and then increasing. This would be helpful to manufacture parts of the required grain size in ultrasonic vibration-assisted WAAM fields.

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Cavitation dynamics and flow aggressiveness in ultrasonic cavitation erosion

Cited by 45 publications

References 36 publications

Dual-frequency multi-angle ultrasonic processing technology and its real-time monitoring on physicochemical properties of raw soymilk and soybean protein

Dual-frequency multi-angle ultrasonic processing technology and its real-time monitoring on physicochemical properties of raw soymilk and soybean protein

Effect of ultrasonic field on the performance of an iron‐vanadium flow battery with non‐aqueous deep eutectic solvent electrolyte

Effects of In-Process Ultrasonic Vibration on Weld Formation and Grain Size of Wire and Arc Additive Manufactured Parts

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