Inverse identification of the acoustic pressure inside a U-shaped pipe line based on acceleration measurements

Beauvais, Romain; Pelat, Adrien; Gautier, François; Florquin, Véronique; Vandenbossche, Guillaume; Gilbert, Joël

doi:10.1016/j.ymssp.2021.107831

Cited by 6 publications

(5 citation statements)

References 15 publications

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Section: Introductionmentioning

confidence: 99%

“…Fluid-conveying pipelines are an essential component of substance transportation and cooling systems, and are thus widely used in many fields, such as naval and ocean engineering (Wiggert & Tijsseling 2001;Łuczko & Czerwiński 2019;Beauvais et al 2021; When passing through the elbow of pipelines, the fluid is subjected to resistance as well as secondary backflow due to the changes in the curvature of the pipelines, which could result in major safety accidents.…”

Section: Introductionmentioning

confidence: 99%

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Hydrodynamic metamaterial redirector for steering fluid flow in pipelines with arbitrary curvatures

Pang,

You,

Chen

2024

J. Fluid Mech.

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The dynamics of fluid-conveying pipelines with different shapes has received extensive research attention. Significant wall shear stress and flow separation occur when the fluid flows through pipelines with various curvatures. These phenomena trigger pipeline vibration, the generation of mechanical and hydrodynamic noise, damage, and even the rupture of the pipeline. However, previous studies have not considered the mechanism of internal pipeline flow to eliminate flow separation and the generation of secondary flow inside bent pipelines by redirecting and manipulating the flow. To steer the fluid flow, a ‘hydrodynamic transformation strategy’ based on the metamaterial technology is proposed for the first time in this work; through this strategy, the fluid in pipelines can be made to flow along trajectories that are always parallel to the central axis of the bent pipelines. Interestingly, this innovative method can effectively eliminate the elbow-induced secondary flow and prevent the generation of a pressure gradient toward the pipeline wall. Using the soft lithography technology or the three-dimensional printing technology, the hydrodynamic metamaterial microstructure required to manipulate the fluid flow path in actual engineering applications can be achieved. Our work paves the way for developing new approaches for controlling the flow characteristics and reducing the turbulence intensity of the fluid flowing in pipelines with elbows and corners.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Hydrodynamic metamaterial redirector for steering fluid flow in pipelines with arbitrary curvatures

Pang,

You,

Chen

2024

J. Fluid Mech.

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“…analysis methodology for assessing the fatigue life of welded components based on a realistic simulated stress and Stress life (S-N) approach from British Standard BS-7608. Beauvais Romain et al (2021) tested a piping system and established a non-intrusive acceleration measurement technique to identify the internal sound pressure level within a piping loop. Pulsation-induced vibration problems can be easily diagnosed based on this approach.…”

Section: Introductionmentioning

confidence: 99%

Vibration analysis of piping connected with shipboard equipment

Tripathi,

Jadhav,

Gaikwad

et al. 2024

Front. Mech. Eng.

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The piping system connected with the shipboard equipment may be subjected to excessive vibration due to harmonic base excitation produced by hydrodynamic force imposed on the propeller blades interacting with the hull and by other sources. Vibration design aspects for shipboard pipework are often ignored, which may cause catastrophic fatigue failures and, consequently, leakage and spillage in the sea environment. Without dedicated design codes, the integrity of shipboard equipment against this environment loading can be ensured by testing as per test standard MIL-STD-167-1A (2005). However, in many cases, testing is not feasible and economically viable. Hence, this study develops an FE-based vibration analysis methodology based on MIL-STD-167-1A, which can be a valuable tool to optimize the testing requirement without compromising the integrity of these piping systems. The simulated model dynamic properties are validated with experimental modal testing and Harmonic response analysis result confirm that a mitigating solution option can be verified by a FE based vibration analysis to mitigate the vibration problem.

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“…Wang et al 42 used the improved Fourier series method to explore the vibration problem of beams with variable cross sections. In Beauvais’s opinion, 43–44 the sound field in a panel-cavity coupling system can be divided into the purely random pressure field, the perfectly correlated pressure field, the incident diffuse field and the turbulent boundary field. For solving the vibro-acoustic problems more conveniently, the Modal Energy Analysis (MODENA) works in numerical calculation.…”

Section: Introductionmentioning

confidence: 99%

Analytical modeling of the virtual sound insulation measurement suite and research on sound insulation test methods

Wang

Sheng

Kong

et al. 2022

Journal of Low Frequency Noise, Vibration and Active Control

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With the development of modern industrial technology, it is an essential problem to calculate the noise reduction performance of the flexible partition walls. The sound insulation measurement model is modeled by the Spectral geometry method (SGM). Compared with the traditional ones, it is a method with higher calculation accuracy and faster convergence speed. The displacement of the panel and the sound pressure field inside the rooms are expressed as Fourier series with additional items. In order to simulate the real measurement environment, the sound source room and the receiving room are set as a reverberation chamber and an anechoic chamber with impedance boundaries, respectively. The coupling relationship is established by the Hamilton’s principle. Then the natural frequencies and the sound pressure level are compared with those derived by the finite element method (FEM). The results show that the analytical method has good accuracy and convergence. Moreover, the sound transmission loss (STL) of the partition could be obtained by the sound pressure method. Considering there is no accurate method for measuring the STL, this paper studies some factors affecting the sound insulation performance of the model by the parametric analysis method, such as the thickness of the panel, the length of the receiving room, the impedance of the receiving room and the parameters of medium.

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Inverse identification of the acoustic pressure inside a U-shaped pipe line based on acceleration measurements

Cited by 6 publications

References 15 publications

Hydrodynamic metamaterial redirector for steering fluid flow in pipelines with arbitrary curvatures

Hydrodynamic metamaterial redirector for steering fluid flow in pipelines with arbitrary curvatures

Vibration analysis of piping connected with shipboard equipment

Analytical modeling of the virtual sound insulation measurement suite and research on sound insulation test methods

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