Experimental and numerical investigation on effects of air compressibility on dynamic performance of the damaged ship

Zhang, XinLong; Simone, Mancini; Liu, Fei

doi:10.1016/j.oceaneng.2023.115837

Cited by 5 publications

(3 citation statements)

References 33 publications

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“…14 , professional 3D modeling tools like Solidworks produce highly accurate 3D models, making DT model realistic and credible in engineering practice. Siemens PLM 87 presents rich geometric modeling functions to create complex mechanical components, which were used in the manufacturing process simulation to predict possible faulty points. Physical modeling Physical modeling digitally represents the physical properties of real systems in various disciplines, allowing DT models to characterize faults closer to the real situation.…”

Section: Dt Modeling Tech Tool and Dt System For Phmmentioning

confidence: 99%

Section: Dt Modeling Tech Tool and Dt System For Phmmentioning

confidence: 99%

See 1 more Smart Citation

Digital twin-driven prognostics and health management for industrial assets

Xiao,

Zhong,

Bao

et al. 2024

Sci Rep

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As a facilitator of smart upgrading, digital twin (DT) is emerging as a driving force in prognostics and health management (PHM). Faults can lead to degradation or malfunction of industrial assets. Accordingly, DT-driven PHM studies are conducted to improve reliability and reduce maintenance costs of industrial assets. However, there is a lack of systematic research to analyze and summarize current DT-driven PHM applications and methodologies for industrial assets. Therefore, this paper first analyzes the application of DT in PHM from the application field, aspect, and hierarchy at application layer. The paper next deepens into the core and mechanism of DT in PHM at theory layer. Then enabling technologies and tools for DT modeling and DT system are investigated and summarized at implementation layer. Finally, observations and future research suggestions are presented.

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Section: Dt Modeling Tech Tool and Dt System For Phmmentioning

confidence: 99%

Section: Dt Modeling Tech Tool and Dt System For Phmmentioning

confidence: 99%

Digital twin-driven prognostics and health management for industrial assets

Xiao,

Zhong,

Bao

et al. 2024

Sci Rep

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“…In previous studies [10,41], the effects of air compressibility on dynamic responses of damaged ships have been investigated. However, the effects of outflow paths generated by different positions of ventilation holes have rarely been studied, which may affect the accuracy of damage assessment.…”

Section: Effect Analysis Of Air-fluid Interaction On Dynamic Response...mentioning

confidence: 99%

Experimental and Numerical Investigation into the Effects of Air–Fluid Interaction on the Dynamic Responses of a Damaged Ship

Zhang,

Mancini,

Liu

et al. 2024

JMSE

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To accurately assess the dynamic stability of the damaged ship, this paper performs an experimental campaign and presents a feasible numerical method to analyze the effects of microscopic air–fluid interactions on the motion responses of the damaged ship. The numerical approach can be applied to solve the coupled hydrodynamic behavior between the flooding process and the motion responses of the damaged ship. The volume of fluid (VOF) method was applied to capture the interface of the free surface, while the dynamic fluid–body Interaction (DFBI) morphing technique was applied to deal with mesh adaption. In particular, the UDF (user-defined field) function was activated to realize the initial distribution of the free surface. Firstly, by comparing the experimental and numerical results, the reliability of visualizing the flooding process and dealing with the motion responses of the damaged ship was efficiently verified. The numerical flooding process was able to reproduce the hydrodynamic phenomenon well, including the flooding jet, interaction, and flow between adjacent compartments. The numerical roll motion curve of the damaged ship was consistent with that predicted in the model test, with an error in roll amplitude of no more than 4%. Secondly, based on the verified numerical method, it was seen from the results with different ventilation positions that not only the air compressibility due to varying levels of ventilation cannot be neglected in damage assessment, but also the position of the ventilation hole was crucial. This was because different positions will create different paths for the compressed air to overflow and affect air–fluid interactions. Thus, the flooding force and air-impacting force acting on the internal hull will be different. In conclusion, this paper introduces a new consideration in the damage assessment of ships.

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