期刊论文

NUMERICAL SIMULATION OF THE HYDRODYNAMIC CHARACTERISTICS OF VIOLENT AERATED FLOWS NEAR VERTICAL STRUCTURE UNDERWAVE ACTION

中文

力学学报

0459-1879

2020

52

2

408-419

10.6052/0459-1879-20-029

51979015:国家自然科学基金 51839002:国家自然科学基金 51509023:国家自然科学基金 2019IC05:国家国际科技合作专项基金

本校为第一机构

波浪破碎卷入气体易对建筑物受力产生压力振荡,了解波浪作用下建筑物附近掺气水流的运动特性是精确计算建筑物受力的前提.基于OpenFOAM开源程序包和修正速度入口造波方法建立三维数值波浪水槽,模型采用S-A IDDES湍流模型进行湍流封闭,并采用修正的VOF方法捕捉自由液面,数值模拟了规则波在1:10的光滑斜坡上与直立结构物的相互作用过程,重点分析了结构物附近的水动力和掺气水流运动特性.结果表明,建立的数值模型能精确地捕捉波浪作用下直立结构物附近的自由液面的变化以及气泡输运过程,较好地描述气体卷入所形成的气腔形态以及多气腔之间的融合、分裂等过程;波浪与直立结构物相互作用产生强湍动掺...

The air entrainment of water body under wave breaking is easy to produce pressure oscillation on the coastal structures. Therefore, in order to calculate the forces on the structures accurately, it is necessary to understand the motion characteristics of the aerated flows near coastal structure under wave action. In this study, a three-dimensional numerical wave flume is developed based on the OpenFOAM open source package together with the modified velocity inlet wave method. The model uses the S-A IDDES turbulence model to close the equations ...