Boundary layer approach in the modeling of breaking solitary wave runup
Boundary layer approach in the modeling of breaking solitary wave runup
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边界层方法在孤立波爬升破断建模中的应用
DOI：
10.1016/j.coastaleng.2012.11.005
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发表时间：
2013-03
影响因子：
4.4
通讯作者：
Lin, Pengzhi
中科院分区：
文献类型：
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作者：
Adityawan, Mohammad Bagus;Tanaka, Hitoshi;Lin, Pengzhi
边界层在波浪运动与床面应力的关系中起着非常重要的作用，如泥沙输移等。众所周知，床面应力特性受波浪下方边界层的影响很大。具体而言，波浪爬高下的边界层很难评估，因此，尽管它的重要性很重要，但尚未得到广泛讨论。在这项研究中，浅水方程（SWE）的波浪运动预测是改进的耦合与k-ω模型，而不是传统的经验方法，近似床面应力。随后，一阶中心格式和单调上游守恒律格式（FORCE MUSCL），这是一个有限体积的激波捕捉计划，应用于扩展SWE范围破碎波模拟。所提出的同时耦合法（SCM）假设来自SWE的深度平均速度等效于自由流速度。反过来，自由流速度用于计算压力梯度，然后由k-ω模型用于近似床应力。最后，这种近似适用于在SWE的动量方程。两个实验的情况下，将被用来验证SCM通过比较爬高，表面波动，床应力，和湍流强度值。SCM显示出良好的比较实验数据的所有上述参数。进一步的分析表明，随着波的传播，波的雷诺数增加，边界层中的湍流行为逐渐改变，如湍流强度的增加。
The boundary layer is very important in the relation between wave motion and bed stress, such as sediment transport. It is a known fact that bed stress behavior is highly influenced by the boundary layer beneath the waves. Specifically, the boundary layer underneath wave runup is difficult to assess and thus, it has not yet been widely discussed, although its importance is significant. In this study, the shallow water equation (SWE) prediction of wave motion is improved by being coupled with the k–ω model, as opposed to the conventional empirical method, to approximate bed stress. Subsequently, the First Order Center Scheme and Monotonic Upstream Scheme of Conservation Laws (FORCE MUSCL), which is a finite volume shock-capturing scheme, is applied to extend the SWE range for breaking wave simulation. The proposed simultaneous coupling method (SCM) assumes the depth-averaged velocity from the SWE is equivalent to free stream velocity. In turn, free stream velocity is used to calculate a pressure gradient, which is then used by the k–ω model to approximate bed stress. Finally, this approximation is applied to the momentum equation in the SWE. Two experimental cases will be used to verify the SCM by comparing runup height, surface fluctuation, bed stress, and turbulent intensity values. The SCM shows good comparison to experimental data for all before-mentioned parameters. Further analysis shows that the wave Reynolds number increases as the wave propagates and that the turbulence behavior in the boundary layer gradually changes, such as the increase of turbulent intensity.
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影响因子：
2.8
作者：
Suntoyo;Hitoshi Tanaka
通讯作者：
Suntoyo;Hitoshi Tanaka
影响因子：
4.4
作者：
Hitoshi Tanaka;B. Winarta;Suntoyo;H. Yamaji
通讯作者：
Hitoshi Tanaka;B. Winarta;Suntoyo;H. Yamaji
影响因子：
4.4
作者：
Suntoyo;Hitoshi Tanaka;Ahmad Sana
通讯作者：
Suntoyo;Hitoshi Tanaka;Ahmad Sana
影响因子：
3.7
作者：
P. Liu;Y. Park;E. Cowen
通讯作者：
P. Liu;Y. Park;E. Cowen
DOI：
10.5402/2011/814045
发表时间：
2011-08
期刊：
International Scholarly Research Notices
影响因子：
--
作者：
M. Adityawan;Hitoshi Tanaka
通讯作者：
M. Adityawan;Hitoshi Tanaka