The invention discloses an active control method for inhibiting unsteady flow excitation of an underwater vehicle, and relates to the technical field of turbulent flow control, and the method comprises the steps: determining the position of an initial separation point of a horseshoe vortex at the front edge of a combination part of a surrounding shell and a main hull; an arrow-shaped hole is formed in the position of the initial separation point, and suction flow control is applied through the arrow-shaped hole; and comparing the flow characteristics of the joint part of the enclosure and the main boat body under different arrow-shaped hole sizes and flow suction speeds, selecting the arrow-shaped hole sizes and flow suction speeds with the optimal control effect, and carrying out active flow suction control at the initial separation point position so as to inhibit the unsteady flow excitation of the underwater vehicle. According to the method, the vortex structure and pulsating pressure of the underwater navigation body can be greatly inhibited, the external streaming of the joint part of the main body and the auxiliary body is improved and optimized, and the purpose of reducing flow-induced noise is achieved.
本发明公开了一种抑制水下航行体非定常流动激励的主动控制方法,涉及湍流流动控制技术领域,该方法包括:确定马蹄涡在围壳与主艇体结合部前缘的起始分离点位置;在起始分离点位置处开箭形孔,并通过箭形孔施加吸流控制;对比不同箭形孔尺寸和吸流速度下的围壳与主艇体结合部流动特征,选取具备最优控制效果的箭形孔尺寸和吸流速度,在起始分离点位置开展主动吸流控制,以抑制水下航行体非定常流动激励。该方法可极大地抑制水下航行体涡旋结构与脉动压力,改善与优化主附体结合部外部绕流,达到降低流激噪声的目的。
Active control method for inhibiting unsteady flow excitation of underwater vehicle
一种抑制水下航行体非定常流动激励的主动控制方法
2025-03-14
Patent
Electronic Resource
Chinese
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