Methodology for removing fouling within liquid-filled pipelines based on ultrasonic guided waves cavitation effect

Qu, Zhigang; Yang, Jie; Wu, Liqun; An, Yang; Liu, Ying; Yin, Wuliang; Jin, Shuo; Yang, Xiao; Wang, Qiuyu; Fang, Ri

doi:10.1016/j.apacoust.2019.107018

Cited by 13 publications

(8 citation statements)

References 16 publications

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“…The shell increases the transducer size. Thus, the integrated piezoelectric probe array is fit to be applied in a large pipeline [88][89][90].…”

Section: Integrated Piezoelectric Probe Arraymentioning

confidence: 99%

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

Fang

2023

Smart Mater. Struct.

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An axisymmetric guided wave mode is excited independently within a circular tube structure to reduce the complexity of signal interpretation through the prevention of unwanted wave polarisations and reflections. However, it is difficult to use the axisymmetric guided wave to determine the circumferential position and coverage of a defect within the circular tube structure. Non-axisymmetric guided waves can be used to mitigate the limitation of the axisymmetric guided wave through the adoption of a partially covered transducer design and analysis of the propagation characteristics. The partial excitation of non-axisymmetric guided waves can facilitate the arrangement of a transducer during defect detection. This paper reviews state-of-the-art research on non-axisymmetric guided waves for determining the axial positions, circumferential positions, and circumferential lengths of defects. First, the fundamental analysis of a specific non-axisymmetric guided wave mode based on the normal mode expansion method and beam directivity analysis method reveals that the propagation characteristics of the wave mode are closely related to the working principle and configuration of the corresponding transducer. Then, the advantages and disadvantages of the different types of transducers and transducer arrays for the excitation of non-axisymmetric guided waves are introduced and discussed. Finally, the current defect detection methods based on non-axisymmetric guided waves are discussed and summarised. This review can promote the application of non-axisymmetric guided waves in defect detection.

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“…The shell increases the transducer size. Thus, the integrated piezoelectric probe array is fit to be applied in a large pipeline [88][89][90].…”

Section: Integrated Piezoelectric Probe Arraymentioning

confidence: 99%

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

Fang

2023

Smart Mater. Struct.

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“…It has been widely demonstrated that ultrasonication is an effective active heat-transfer enhancement method. − Relevant studies − have shown that the main role of ultrasonication in enhancing processes can be attributed to cavitation and its physical induction effect. It has led to applicative research for ultrasonic descaling, medical diagnosis, drug delivery, food preservation, and other fields. − …”

Section: Introductionmentioning

confidence: 99%

“…1−4 Relevant studies 5−8 have shown that the main role of ultrasonication in enhancing processes can be attributed to cavitation and its physical induction effect. It has led to applicative research for ultrasonic descaling, 9 medical diagnosis, 10 drug delivery, 11 food preservation, 12 and other fields. 13−15 It is also relevant to mention that cavitation has periodic motion characteristics.…”

Section: ■ Introductionmentioning

confidence: 99%

Near-Wall Cavitation Effect: A Molecular Dynamics Study

Zhang,

Guan,

et al. 2023

Langmuir

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Cavitation has been the subject of abundant studies, but the internal mechanism of cavitation is less well known. In this article, a microlevel near-wall model was established by using LAMMPS to present the process of cavitation effect. The results of molecular dynamics simulation revealed the fluctuation process of the liquid near the wall with the change in pressure. Molecular dynamics was also used to evaluate the void volume fraction and density distribution of the system. The results exhibited that the cavitation process can be divided into two stages: the initial cavitation stage and the rapid growth stage. Based on these results, the effects of wettability and initial system temperature on the near-wall cavitation effect were demonstrated. The results indicated that the hydrophobic near-wall forms a gas layer to weaken the density fluctuation, while the hydrophilic wall is opposite. Increasing the temperature could positively affect molecular motion and cavitation. This work provides a theoretical basis for further exploration of the cavitation effect.

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“…First and foremost, these techniques are online, and halting the production is not mandatory. Additionally, they are entirely environmentally friendly [22][23][24][25][26][27][28]. Li et al [23] proposed an environmentally-friendly approach to remove fouling inside a pipe which was large-scale descaling and based on leaky ultrasonic guided waves.…”

Section: Introductionmentioning

confidence: 99%

Improving the Descaling Rate of an In-situ Ultrasonic Fouling Removal Method for Industrial Water-filled Pipelines

Mohammadi,

Mobli,

Siahtiri

et al. 2023

Preprint

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Introducing innovative and environmentally friendly fouling removal methods for water-filled pipelines is essential nowadays to increase pipelines' safety and productivity and eliminate the limitations of traditional descaling methods. In this paper, we investigate the capability of high-power ultrasonic waves and cavitation phenomenon as an influential online fouling removal tool to remove the build-up fouling with a thickness of 1 mm on the inner surface of 4-inch low-carbon stainless steel pipes filled with water. First, we developed a FEM simulation to investigate the effect of ultrasonic power on the acoustic pressure at different distances from the transducer attached point on the pipe using Comsol Multiphysics. After that, we conducted an experimental and statistical investigation to validate our result from FEM analysis using a transducer set and PZT-4 piezoelectric attached to the pipes' outer surface. The results showed that increasing the transducer's electrical power would raise the fluid's acoustic pressure. Furthermore, we indicate that increasing the electrical power to 400 W results in a higher fouling removal rate in the pipe.

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Methodology for removing fouling within liquid-filled pipelines based on ultrasonic guided waves cavitation effect

Cited by 13 publications

References 16 publications

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

A review of non-axisymmetric guided waves and their corresponding transducers for defect detection in circular tube structures

Near-Wall Cavitation Effect: A Molecular Dynamics Study

Improving the Descaling Rate of an In-situ Ultrasonic Fouling Removal Method for Industrial Water-filled Pipelines

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