Hydrodynamic Characteristics of Underwater Vehicles Under the Flow Disturbance Condition of Submarine

HUANG Chuang; HAO Sihan; ZHANG Chenchen; QIN Kan; XU Haiyu

doi:10.11993/j.issn.2096-3920.2025-0165

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HUANG Chuang, HAO Sihan, ZHANG Chenchen, QIN Kan, XU Haiyu. Hydrodynamic Characteristics of Underwater Vehicles Under the Flow Disturbance Condition of Submarine[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0165

Citation:

HUANG Chuang, HAO Sihan, ZHANG Chenchen, QIN Kan, XU Haiyu. Hydrodynamic Characteristics of Underwater Vehicles Under the Flow Disturbance Condition of Submarine[J]. Journal of Unmanned Undersea Systems. doi: 10.11993/j.issn.2096-3920.2025-0165

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Hydrodynamic Characteristics of Underwater Vehicles Under the Flow Disturbance Condition of Submarine

doi: 10.11993/j.issn.2096-3920.2025-0165

1.
School of Marine Science and Technology, Northwestern Polytechnical University, Xi’an 710072, China
2.
The 705 Research Institute, China State Shipbuilding Corporation Limited, Xi’an 710077, China

Received Date: 2025-12-09
Accepted Date: 2026-03-23
Rev Recd Date: 2026-03-05

Available Online: 2026-08-17

Abstract

Abstract

A numerical model of an underwater vehicle in the flow field of the submarine is established by combining the overset grid technology and the moving reference frame. The rationality of the numerical method is verified by comparing the simulation results with the standard model test data reported in the literature. The effects of the flow around the submarine on the external flow field and hydrodynamic characteristics of the vehicle are investigated. The results show that the underwater vehicle is most significantly affected by the flow around the submarine when it is located at the front side of the submarine, and the drag coefficient, lateral force coefficient, and yaw moment coefficient of the vehicle exhibit nonlinear characteristics. As the distance between the vehicle and the submarine increases, the influence of the flow around the submarine on the hydrodynamic characteristics of the underwater vehicle gradually weakens, and the influence can be neglected when the distance is greater than 1.75 times the diameter of the submarine. With the increase in the speed of the submarine, the hydrodynamic parameters of the vehicle are more strongly affected by the flow around the submarine. The research results can provide a reference can provide a reference for the prediction of launching initial trajectory of underwater vehicles.
- underwater vehicle,
- flow field of submarine,
- non-far-field flow,
- hydrodynamic characteristics

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References(15)

References

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