摘要
作为一种能处理复杂运动界面且具有物理守恒性的算法,VOF (volume of fluid)方法广泛应用于船舶水动力学CFD (computational fluid dynamics)模拟。该文面向船舶航行兴波这一典型且常见的运动界面流动问题,针对网格适应性更好的代数型VOF方法开展研究。该文首先介绍了CICSAM(compressive interface capturing scheme for arbitrary meshes)、HRIC (high resolution interface capturing)和Fromm三种典型的代数型VOF格式,随后采用二维Zalesak算例对几种格式进行了测试;根据对测试结果的分析,对耗散性较强的HRIC格式进行了优化,并得到了Zalesak算例、剪切流场、旋转流场和平移流场下测试结果的验证;最后开展了Wigley船型和KCS船模航行兴波的CFD模拟。经过对Wigley船航行兴波和舷侧波形CFD模拟结果及与模型试验结果的对比分析,结果表明:优化的HRIC格式总体上表现最优,Fromm格式次之,CICSAM格式又次之,HRIC格式模拟结果最差。从KCS兴波模拟结果来看,优化HRIC格式可以较好地解决实际船型航行兴波数值模拟问题。
As an algorithm that can handle complex moving interface and has physical conservation,VOF method is widely used in CFD simulation of ship hydrodynamics.In this paper,the algebraic VOF method with well mesh adaptability is studied for the typical and common moving interface flow problem of ship waves.Firstly,three typical algebraic VOF schemes of CICSAM,HRIC and Fromm are introduced,and are tested in two-dimensional Zalesak case.According to the analysis of the test results,the HRIC scheme with strong dissipation is improved,and the test results of the Zalesak case,shear flow field,rotational flow field and translation flow field show that the HRIC scheme has improved.Finally,CFD simulation of Wigley ship and KCS ship waves are carried out.By comparing the CFD simulation results of Wigley ship waves and the model test results,the comprehensive results show that the improved HRIC scheme has the best performance overall,followed by Fromm scheme,CICSAM scheme and HRIC scheme successively.From the results of KCS waves simulation,the improved HRIC scheme can solve the numerical simulation of real ship waves well.The research work in this paper can provide reference and support for the related numerical simulation and development work.
作者
李晓东
吴乘胜
王星
Xiao-dong Li;Cheng-sheng Wu;Xing Wang(China Ship Scientific Research Center,Wuxi 214082,China)
出处
《水动力学研究与进展（A辑）》
CSCD
北大核心
2022年第2期252-261,共10页
Chinese Journal of Hydrodynamics
关键词
两相流
界面捕捉
代数型VOF方法
高分辨率格式
Two phases flow
Interface capture
Algebraic VOF method
High resolution scheme
