基于参数化流动控制的开孔潜航器优化

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中图分类号：U662.2；U674.941 文献标志码：A

Abstract： To reduce the navigation resistance of open-hole submersibles，the resistance reduction flow separation control is carried out through vortex generators and longitudinal seam holes.The flow control method of the vortex generator configuration with a fully parametric expression and segmented longitudinal seam flow holes is established based on the composition mechanism of parametric characteristic curves. Integrating the fully parametric configuration method，the resistance performance prediction technology and intellgent optimization algorithms，a resistance optimized model of submersible holes is constructed to realize the optimal design of vortex generators and longitudinal seam holes with the resistance characteristic as the goal in the wide speed range. The calculation results show that： setting vortex generators before the flow separation point can effectively suppress the flow separation at the bow of the submersible；when vortex generators are close to the holes，the resistance of the submersible decreases; the smaller the length of the middle part of the vortex generator，the more obvious the resistance reduction effect.The longitudinal seam can inhibit the turbulence intensity of the fluid movement inside and outside flow holes，and improve the uniformity of the flow field in the flow hole area. The resistance reduction effect of submersibles before and after optimization isconsistent with the change law of flow characteristics，which proves the ffctiveness and accuracy of the optimization method. The parametric flow control method provides technical reference for the design of resistance reduction and efficiency enhancement of open-hole submersibles.

Key words：submersible；vortex generator； longitudinal seam hole；flow control； fully parameterization

0 引言

潜航器壁面的复杂流体运动对其航行性能具有显著影响。（剩余10246字）