Abstract

Abstract In order to study the separation process of the underwater active propulsion hood, this paper analyzes the main stages of the underwater separation system. By using unstructured dynamic mesh technology, the control equations of computational fluid dynamics are coupled with the six-degree-of-freedom motion equations to calculate the influence of different installation angles of the propulsion device and the distance of thrust deviation from the center of gravity on the separation of the hood. The results show that hydrodynamics will exert a moment on the hood, causing the hood to rotate. Excessive rotation of the hood can lead to collisions with the vehicle. Raising the installation angle of the propulsion device and applying thrust to resist the rotation of the hood can reduce the angular velocity of the hood, improve the effectiveness of the thrust, and optimize the separation performance of the system.

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