摘要
为了对船体航行阻力大小进行预测,使得设计人员在设计阶段便能够对船身结构进行优化改进,以获得性能优良的船身结构。基于UG建立船身与水流相互作用的几何模型,并借助hypermesh环境对几何模型进行离散化,得到高质量的流体动力学计算网格。将船头前部网格作为入口边界条件,后部以及侧面网格作为出口边界条件,船身对称面网格作为对称边界条件,建立有效的有限元计算模型。采用Fluent求解器对有限元模型进行求解,设定最大迭代步数为100步。通过对求解过程中动力粘度、速度、压力等重要的动力学参数残差收敛情况进行监控,表明整个计算过程收敛,得到的计算结果与实际情况相符合。通过CFD计算,得到了船身周围水压分布情况,根据船身前后方向水压差以及船身截面积,计算得到了船舶航行阻力。
In order to predict the sailing resistance of the hull structure,and allows designers be able to optimize the hull structure during the design phase and achieve excellent performance of the hull structure. The geometric model of the hull and the water interaction was established based on ug,and hypermesh environment are then used to discrete geometric model,finally the computational fluid dynamics grid are obtained with good quality. The bow front grid are set as the inlet boundary condition,rear and side mesh are set as the outlet boundary condition,symmetrical hull surface mesh are set as a symmetric boundary conditions,a effective finite element model are then established. The finite element model is solved by using fluent solver with a maximum iteration steps of 100 steps. By monitor the dynamic viscosity,velocity,pressure, and other important convergence residual kinetic parameters through the situation process,indicating that the entire calculation process of convergence,the calculation results are consistent with the actual situation. the pressure distribution around the hull are obtained by CFD calculations,according to the water pressure and hull cross-sectional area,the sailing resistance are calculated.
出处
《舰船科学技术》
北大核心
2015年第3期139-142,共4页
Ship Science and Technology
作者简介
张艳（1982-），女，硕士，讲师，研究方向为高性能船舶水动力性能。
