Research on the oil retention effect of pneumatic oil barriers under current and wave action DOI Creative Commons
Hao Liu, Hongyuan Sun, Bo Jiao

et al.

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(5), P. e0322390 - e0322390

Published: May 8, 2025

The pneumatic oil barrier is a novel device that intercepts spills by releasing high-pressure gas underwater to form curtain of bubbles. However, its performance can be affected both internal factors and external influences like water flow waves, leading varying degrees interception failure reduced effectiveness. This study combines physical experiments with numerical simulations analyze the impact nozzle parameters, arrangement, velocity, wave effects on loss effective containment distance under uniform conditions. findings establish relationships between these efficiency, revealing reasons for changes in through field analysis. research indicates floating velocities below 0.15 m/s; optimal diameter 1.5 mm, as increasing it affects stability horizontal layers. Additionally, dual-pipe arrangement produces wider more stable surface, enhancing effectiveness, while waves destabilize layers, reducing distance.

Language: Английский

Study on failure mode of oil interception fence in turbulent river DOI

Xinyi Xu,

Zhenhua Wang, Xuan Shi

et al.

Published: April 24, 2025

To reduce environmental pollution caused by oil spills in turbulent river condi-tions, the key to researching spill recovery technology for rivers is identify critical factors leading failure of booms. This paper es-tablishes a two-dimensional three-phase flow model based on FLUENT technol-ogy simulate transient changes and distribution patterns water under influence booms; it uses ANSYS build mechanical boom, calculating deformation degree interception efficiency conditions, investigates areas with higher probabilities structural failure. Additionally, similarity principles, laboratory small-scale tank experiment established provide basis opti-mizing new boom structures deployment methods.

Language: Английский

Citations

0
Numerical Study of the Hydrodynamic Response of Biodegradable Drifting Fish Aggregating Devices in Regular Waves DOI Creative Commons

Tongzheng Zhang,

Zhiqiang Liu, Junbo Zhang

et al.

Fishes, Journal Year: 2024, Volume and Issue: 9(4), P. 112 - 112

Published: March 22, 2024

Fish-aggregating devices play a significant role in tuna purse fisheries. The severe marine environment and the large number of non-biodegradable fish-aggregating impact structural safety cause litter. Therefore, hydrodynamic performance use biodegradable materials are crucial issues for ensuring sustainability devices. In this study, type virtual drifting device (Bio-DFAD) was designed. Numerical simulations were conducted to investigate motion responses relative velocities Bio-DFADs regular waves (first- fifth-order waves). numerical model applied based on unsteady Reynolds-averaged Navier–Stokes equations with realizable k–ε model. For different scenarios modeling, various conditions modeled, including length, wave steepness, diameter balsa wood, analyze their effects response Bio-DFADs. results indicated that increased wood had influence amplitude operators (RAOs) velocity suggested length (LF/B = 1.5) smaller (DF 30 mm) recommended fewer velocity. obtained provide insight practical engineering applications design

Language: Английский

Citations

3
Research on the oil retention effect of pneumatic oil barriers under current and wave action DOI Creative Commons
Hao Liu, Hongyuan Sun, Bo Jiao

et al.

PLoS ONE, Journal Year: 2025, Volume and Issue: 20(5), P. e0322390 - e0322390

Published: May 8, 2025

The pneumatic oil barrier is a novel device that intercepts spills by releasing high-pressure gas underwater to form curtain of bubbles. However, its performance can be affected both internal factors and external influences like water flow waves, leading varying degrees interception failure reduced effectiveness. This study combines physical experiments with numerical simulations analyze the impact nozzle parameters, arrangement, velocity, wave effects on loss effective containment distance under uniform conditions. findings establish relationships between these efficiency, revealing reasons for changes in through field analysis. research indicates floating velocities below 0.15 m/s; optimal diameter 1.5 mm, as increasing it affects stability horizontal layers. Additionally, dual-pipe arrangement produces wider more stable surface, enhancing effectiveness, while waves destabilize layers, reducing distance.

Language: Английский

Citations

0