Numerical analysis of the effect of a breaking-vortex baffle around appendage on the submarine flow field and flow noise

Ocean Engineering, Journal Year: 2025, Volume and Issue: 319, P. 120284 - 120284

Published: Jan. 4, 2025

Language: Английский

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Data-driven modeling for rapid prediction of aerodynamic noise directivity of flow over a cylinder

Applied Mathematical Modelling, Journal Year: 2025, Volume and Issue: unknown, P. 115937 - 115937

Published: Jan. 1, 2025

Language: Английский

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A systematic review on mechanism and regulation strategy of marine hydrodynamic noise: Advances, challenges, and perspectives

Ocean Engineering, Journal Year: 2025, Volume and Issue: 330, P. 121202 - 121202

Published: April 16, 2025

Language: Английский

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Large-eddy simulation of flow noise from turbulent flows past an axisymmetric hull using high-order schemes

Ocean Engineering, Journal Year: 2024, Volume and Issue: 312, P. 119150 - 119150

Published: Sept. 5, 2024

Language: Английский

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Nonlinear Perception Characteristics Analysis of Ocean White Noise Based on Deep Learning Algorithms

Mathematics, Journal Year: 2024, Volume and Issue: 12(18), P. 2892 - 2892

Published: Sept. 17, 2024

Caused by nonlinear vibration, ocean white noise exhibits complex dynamic characteristics and perception characteristics. To explore the potential application of in engineering health fields, novel methods based on deep learning algorithms are proposed to generate noise, contributing marine environment simulation engineering. A comparative study, including spectrum analysis auditory testing, proved superiority generation method using networks over general mathematical or physical methods. further study experimental research multi-modal was carried out within a constructed system environment, following two experiments. The first audiovisual experiment thoroughly explores system’s user experience influence factors, explicitly focusing impact human perception. second sound intensity testing is conducted multi-sensory interaction change patterns under stimulation. results indicate that visual ability state reach relatively high level when close 50 dB. Further numerical reveals internal relationship between multiple senses, showing fluctuating law concentration curvilinear psychology from noise. This underscores noise’s positive effect enhancement improvement, providing basis for field applications such as spiritual healing, perceptual learning, artistic creation beings. Importantly, it provides valuable references practical insights professionals related development utilization environment.

Language: Английский

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Analysis of the correlation between flow physics and cylinder acoustic using different turbulence models

Research Square (Research Square), Journal Year: 2024, Volume and Issue: unknown

Published: Sept. 20, 2024

This paper focuses on an underwater cylindrical body and conduct a comparative study of its hydrodynamic noise characteristics based the LES turbulence model, DDES EB k-epsilon IDDES SST (Menter) k-omega model combined with FW-H equation. Quadrupole is captured through penetrable integral surface "vanishing sphere" formula. The mechanisms behind differences in flow calculations different models are explored by considering both dipole quadrupole sources. main research content this as follows: Firstly, primary sources quickly predicted broadband source effects three compared. Secondly, models, far-field radiated from sound compared experimental data. show better agreement results. Finally, identifying using reasons why provides more accurate predictions explained. offers valuable references for applicability prediction.

Language: Английский

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Performance and mechanism of the hydrodynamic noise reduction for biomimetic trailing-edge serrations of a submarine

Journal of Fluids and Structures, Journal Year: 2024, Volume and Issue: 133, P. 104256 - 104256

Published: Dec. 24, 2024

Language: Английский

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