波浪对平板结构冲击作用数值模拟  

Numerical simulation of wave slamming on open-piled structures

作　　者：金凤[1,2] 

机构地区：[1]河海大学交通与海洋工程学院,江苏南京210098 [2]江苏科技大学船舶与海洋工程学院,江苏镇江212003

出　　处：《水运工程》2012年第9期7-11,共5页Port & Waterway Engineering

摘　　要：为研究波浪冲击特性,应用FLUENT软件建立了规则波与平板结构相互作用的二维数学模型,模型中采用RANS方程和k-ε湍流模型,以VOF方法处理自由表面。对3种典型工况下的冲击过程进行数值模拟,验证了模型的可靠性,并确定冲击压峰值的平均值作为波浪冲击特性指标。通过大量的数值计算,分别对波陡、平板离开水面距离和板宽等因素对波浪冲击作用的影响进行了分析讨论,并与试验结果进行比较。In order to study the specialties of wave slamming on open-piled structures, two-dimensional regular wave numerical models were established based on the software FLUENT. RANS equations were adopted. The standard k-ε equations were used to close the Reynolds equations. VOF method was used to reconstruct the free surface. Through three typical cases of wave slamming on open-piled structures were reproduced, the models were verified by experimental data and the average of peak impact pressure was chosen as the characteristic impact pressure. Then with plentiful simulation the parametric studies had been carried out for different wave steepness, structure geometry and the distance between underside of structure and still water level. Good agreements between the numerical and experimental results were obtained.

关 键 词：FLUENT 规则波 透空式建筑物 波浪冲击 

分 类 号：TU35[建筑科学—结构工程]