Numerical Simulation Study on the Release Process of Underwater Towed Bodies under Different Parameters

Tian Yiwei; LV Rui; Wang Menghao; Li Kui; Zhang Kai; Wang Leilei

doi:10.11993/j.issn.2096-3920.2025-0072

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Tian Yiwei, LV Rui, Wang Menghao, Li Kui, Zhang Kai, Wang Leilei. Numerical Simulation Study on the Release Process of Underwater Towed Bodies under Different Parameters[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0072

Citation:

Tian Yiwei, LV Rui, Wang Menghao, Li Kui, Zhang Kai, Wang Leilei. Numerical Simulation Study on the Release Process of Underwater Towed Bodies under Different Parameters[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0072

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Numerical Simulation Study on the Release Process of Underwater Towed Bodies under Different Parameters

doi: 10.11993/j.issn.2096-3920.2025-0072

1.
The 705 Research Institute, China Shipbuilding Industry Corporation Limited, Xi’an 710077, China
2.
College of Navigation, Northwestern Polytechnical University, Xi’an 710072, China

Received Date: 2025-05-26
Accepted Date: 2025-06-24
Rev Recd Date: 2025-06-16

Available Online: 2025-11-24

Abstract

Abstract

The underwater towing body is an important component of underwater vehicles. For the requirements such as the design of the towing cable for underwater towing bodies and stable attitude during the release process, this paper constructed the fluid dynamics model of the towed body by the overlapping mesh technology and the achievable $k - \varepsilon $ turbulence model, after when carrying out the unsteady numerical simulation of the release process of the towing body. After the simulation, the paper verified the effectiveness of the grid division and numerical methods by comparing the simulation results with the experimental results. The paper systematically analyzed the influence of towing speed, the position of the barycenter and the buoyant center and the towing point on the release process of the towing body in underwater system. The towing speed affects the stabilization time and attitude stabilization process of the towing body, and the optimal towing speed needed to be determined according to the structure of the towing body. The positions of the barycenter and the buoyant center had a significant effect on the release dynamic characteristics of the towed body, and the design of moving the barycenter forward could reduce the oscillation of the towing body and improve the stability of the system. When the barycenter was close to the buoyant center, the attitude adjustment time of the towed body was shorter and the movement was more stable. The towing point should be selected under the head of the towing body to reduce the change in pitch angle during the release process and improve the stability of the release process. The results of the paper provided an important theoretical basis for the engineering design and release strategy of underwater towing bodies.
- towing body,
- release process,
- overlapping grid,
- numerical simulation,
- dynamic characteristics

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References(21)

References

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