h-自适应切割网格法在船海工程领域的发展综述

Development Review of H-adaptive Cut-cell Method in the Field of Ship and Ocean Engineering

针对船海工程领域的多体、多尺度、动边界和自由表面等计算流体力学(computational fluid mechanics,CFD)研究热点问题,旨在精细捕捉流场特征,需要开发一套相应的自适应网格技术.根据对比和分析现有的自适应技术及其适用范围,重点研究基于非边界拟合法的h-自适应切割网格(cut-cell method,CCM)技术.针对船海工程领域的复杂几何边界、自由表面等问题,着重将h-块和h-叉树自适应CCM进行对比和分析,并对其研究现状和关键问题提出总结和展望.

In order to solve the CFD hotspot problems,such as multi-body,multi-scale,moving boundary and free surface in ship and ocean engineering field,it is needed to develop an adaptive mesh technique to capture the fine flow field characteristics.A series of adaptive techniques and their scopes of application were discussed in this paper,and the h-adaptive cut-cell method based on non-boundary fitting method was studied with emphasis.In view of the complex geometry boundary and free surface problems in marine engineering,the h-block structured and h-tree unstructured adaptive cut cell methods were compared and analyzed emphatically.In addition,the current research status,key issues and prospects of these methods were summarized and prospected.