The invention discloses a numerical calculation method for unsteady force of a propeller of an underwater vehicle. The method comprises the following steps: S1, creating geometric models of the underwater vehicle and the propeller; s2, creating a computational domain of simulation calculation of the underwater vehicle and the propeller; s3, setting boundary conditions, establishing a fluid dynamics analysis model, and carrying out simulation calculation of a full-computational domain steady flow field until the flow field is completely converged; s4, extracting flow field data of an interface of the head computational domain and the tail computational domain; s5, deleting grids and data of the head computing domain, and setting the boundary of the interface of the tail computing domain and the head computing domain as a flow inlet boundary; and S6, carrying out the calculation of the unsteady flow. According to the method, flow of the tail aircraft and the propeller is only simulated, the accurate unsteady force value of the aircraft and the propeller is obtained, the calculation amount is reduced, meanwhile, the accuracy of the calculation result is guaranteed, and the problems that in an existing calculation method, the calculation amount is large, and the calculation result is not accurate are solved.
本发明公开了一种水下航行器推进器非定常力数值计算方法,方法包括:S1:创建水下航行器及推进器的几何模型;S2:创建水下航行器及推进器仿真计算的计算域;S3:设置边界条件,建立流体动力学分析模型并开展全计算域定常流场的仿真计算至流场完全收敛;S4:提取首部计算域与尾部计算域的交界面的流场数据;S5:删除首部计算域网格及数据,将尾部计算域与首部计算域的交界面的边界设置为流动入口边界;S6:开展非定常流动的计算。本发明通过仅模拟尾部航行器及推进器的流动,获得准确的航行器推进器的非定常力数值,减小了计算量的同时又保证了计算结果的准确性,解决了现有的计算方法中计算量大和计算结果不精确的问题。
Numerical calculation method for unsteady force of underwater vehicle propeller
一种水下航行器推进器非定常力数值计算方法
2024-11-26
Patent
Electronic Resource
Chinese
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