Limited fetch revisited: Comparison of wind input terms, in surface wave modeling
Limited fetch revisited: Comparison of wind input terms, in surface wave modeling
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重新审视有限获取：表面波建模中风输入项的比较
DOI：
10.1016/j.ocemod.2016.03.005
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发表时间：
2016
期刊：
影响因子：
--
通讯作者：
V. Zakharov
中科院分区：
文献类型：
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作者：
A. Pushkarev;V. Zakharov
本文给出了在有限几何条件下，风驱动海谱的哈塞曼动力学方程的数值解。为了准确表达由于波浪破碎导致的snland高频隐式耗散，研究了五种版本的源函数，包括最近引入的zrpmodel （Zakharov et al., 2012）。5个实验中有4个是在各种烧结材料没有谱峰耗散的情况下进行的。他们证明了四重态波-波相互作用的优势，在能量平衡中，以及自相似体制的形成，无限波能量增长，沿着fetch。介于两者之间的是zrpmodel，该模型与自1947年以来在海洋和湖泊中进行的数十次实地观测结果非常吻合。第五项，wam3风输入项实验，使用了额外的频谱峰值耗散，并再现了Komen等人（1994）先前描述的类似数值模拟的结果，但只支持中等提取的现场实验，显示总能量饱和度为Pierson-Moscowits极限的一半。提出了数值模拟的替代框架，以及一组测试，允许选择物理合理的源项。
Results pertaining to numerical solutions of the Hasselmann kinetic equation (HE), for wind driven sea spectra, in the fetch limited geometry, are presented. Five versions of source functions, including the recently introducedZRPmodel (Zakharov et al., 2012), have been studied, for the exact expression ofSnland high-frequency implicit dissipation, due to wave-breaking. Four of the five experiments were done in the absence of spectral peak dissipation for variousSinterms. They demonstrated the dominance of quadruplet wave–wave interaction, in the energy balance, and the formation of self-similar regimes, of unlimited wave energy growth, along the fetch. Between them was theZRPmodel, which strongly agreed with dozens of field observations performed in the seas and lakes, since 1947. The fifth, theWAM3 wind input term experiment, used additional spectral peak dissipation and reproduced the results of a previous, similar, numerical simulation described in Komen et al. (1994), but only supported the field experiments for moderate fetches, demonstrating a total energy saturation at half of that of the Pierson–Moscowits limit. The alternative framework forHEnumerical simulation is proposed, along with a set of tests, allowing one to select physically-justified source terms.