某潜艇模型不同潜深弹性形变阻力误差补偿理论

针对某型水密潜艇模型流体阻力进行研究。对该模型弹性体与刚性体结构流体阻力误差进行对比与分析。利用ANSYS对不同潜深工况下该弹性试验模型的结构形变量展开了分析;利用CFD计算流体力学k-ω湍流模型对该刚性体艇体水阻力特性进行了计算;通过ANSYS有限元与CFD流体分析相互结合,对该实际弹性体模型不同潜深水下变形量与水阻力进行了深入研究;通过数值分析高斯逼近方法建立了该弹性体模型试验阻力误差补偿理论。结果如下:①弹性体试验模型结构力学误差补偿能够较好地提高试验的准确性,在水深0～20 m工况下,最大误差减小1. 347%;②针对试验模型的弹性形变与刚性体的对比分析,首次提出了该弹性模型试验误差补偿理论,为CFD计算流体力学的准确性验证提供了更加准确的标准。

Research on Elastic Deformation Resistance Error Compensation Theory of The Submarine Model Based on ANSYS-CFD

: The fluid resistance of a certain type of watertight submarine model was researched in this paper, and the error between the elastic body and the rigid body structure were compared and analyzed, which providing a new method to improve the accuracy of the hydrodynamic performance test for the first time. First of all, the structural deformation of the elastic test model under different deep-deep conditions was analyzed by ANSYS; Secondly, the hydrodynamic characteristics of the rigid body of the model are calculated by CFD k-w turbulence model; And then, the submerged depth deformation and water resistance of the actual elastic model are deeply studied through the combination of ANSYS finite element and CFD fluid analysis; Finally, the theory of resistance error compensation of the elastic model is established by numerical analysis of Gaussian approximation method. The results show that: (1) The structural mechanics error compensation of the elastic test model can improve the accuracy of the test. The maximum error is reduced by 1.347% under the water depth of 0-20m. (2) The elastic model test error compensation theory is proposed for the first time, through the comparative analysis of the elastic deformation test model and the rigid body model, which provides a more accurate standard for the accuracy verification of CFD computational fluid dynamics.