摘要
针对现有有限元分析软件在大型水下目标多物理场耦合问题处理上复杂度高、操作不便等问题,提出基于Comsol有限元仿真软件对于大型三维目标的仿真应用方案。推导其特有的间断伽辽金算法在Lax-Friedrichs通量下针对波动方程的空间离散方程,并结合非定长时间显式4阶龙格-库塔法计算水声目标仿真。与解析解对比验证了Comsol求解水声目标在处理多物理场耦合问题的有效性。仿真三维潜艇模型的水下散射声场。通过和传统有限元方法对比,验证了该方法在计算大型目标声散射时的高效性,为Comsol在水声领域的应用提供了有效借鉴。
Aiming at the high complexity and inconvenient operation of the existing finite element analysis software in dealing with the multi-physical field coupling of large underwater objects,we propose a simulation application scheme of large 3 D objects based on Comsol finite element simulation software.The discrete spatial equation of the wave equation under Lax-Friedrichs flux was derived,and the 4-order runge-kutta method was used to calculate the underwater acoustic target simulation.The comparison with the analytical solution verified the effectiveness of Comsol in solving the multiphysics coupling problem when solving the underwater acoustic target.The underwater scattering acoustic field of 3 D submarine model was simulated.The effectiveness of this method in calculating acoustic scattering of large targets is verified by comparison with the finite-difference method.It provides an effective reference for the application of Comsol in the field of underwater acoustic.
作者
周烨
温玮
Zhou Ye;Wen Wei(Naval Air University,Yantai 264000,Shandong,China)
出处
《计算机应用与软件》
北大核心
2020年第8期74-78,84,共6页
Computer Applications and Software
基金
山东省重点研发计划项目(2016CYJS02A01)。
