摘要
使用设置造波边界法和质量源造波法建立了数值波浪水槽,采用阻尼消波法进行消波.设置造波边界法根据行波的解析解或数值解来给定边界上的流速和波高值.质量源造波法是在水槽中特定位置,将质量源项加入到质量守恒方程中.使用该数值水槽模拟了线性波浪和二阶Stokes波,并与理论解进行了对比,结果显示两种造波方法都能有效模拟行波.设置造波边界法必须指定速度和波面边界,不适用于波流相互作用等边界未知的情况,而源造波法则能适用.但是由于源造波法需要在两端设定造波区域,计算区域更大,其造波效率低于设置造波边界法.
With wave boundary method and mass source method, numerical wave flumes are developed. And the damping method is adopted to absorb the numerical wave at the end of the flume. The wave boundary method sets velocity and surface elevation at the inlet boudary according to numerical or analytical solutions of waves. And the mass source method adds a mass source into the equation of mass Conservation. With the numical wave flumes, the linear wave and second-order Stokes wave are simulated and compared with theoretical sloutions. It is shown that both of the two methods are very effective and accurate for numerical Wave simulation. As the wave boundary method needs the boundary velocities to be known, it is not capable to simulate complex conditions, such as wave- flow interaction, while the mass source method is capable. However, as the simulation domain is larger than that of the wave boundary method, the mass source method is less efficient than the wave boundary method.
出处
《复旦学报（自然科学版）》
CAS
CSCD
北大核心
2015年第3期373-378,385,共7页
Journal of Fudan University：Natural Science
