【摘要】 提出了一种基于智能技术的新的辨识算法—随机差分群体智能算法,并对约束物体带攻角高速出水的水动力参数进行了辨识,建立了λ22和Cy的数学模型。用同一攻角的其它试验数据对辨识的模型进行了验证,结果表明,模型的预测值与观测值相当一致。更多还原

【Abstract】 In this paper,a new swarm intelligence algorithm called deferential swarm (DS) is proposed,and identification of hydrodynamic forces acting on an axis-symmetric body exiting water obliquely is investigated using DS. the model of normal added mass coefficient and of the velocity-related normal force coefficient is successfully obtained. Using this model for other test case shows that the results calculated from the identified parameters agree quite well with the original test results. It is also shown that the identification method is effective and the model of normal unsteady hydrodynamic forces during water exit is reliable.更多还原