时健老师在中国近海高分辨率波浪数据库和非静压数学模型领域取得新进展

        近期,时健老师在中国近海高分辨率波浪数据库和非静压数学模型领域取得新进展,两项成果被二区期刊《Ocean Engineering》连续报导。

        Shi et al., (2019a) 利用TOMAWAC波浪模型建立了中国近海39年(1979-2016)高分辨率波浪数据库CWAVE,给出了中国近海极端波浪分布特性及波高演变趋势,研究成果可为沿海波浪灾害评估、波浪能计算、重现期推算提供长时间序列波浪数据。相关成果以“A 39-year high resolution wave hindcast for the Chinese coast: Model validation and wave climate analysis”为题在2019年183期《Ocean Engineering》期刊上发表。

图1 不同季节最大有效波高分布

        Shi et al., (2019b) 对非静压模型PDI方法(Shi et al., 2015)进行了理论分析,发现非静压模型模拟波浪频散性的精度由动压在垂向上的积分精度决定,理论证明了PDI方法中三次样条插值的精度最高。分析了垂向速度网格及压力网格对模型数值扩散和数值耗散的影响,为PDI方法中的网格数合理确定提供了理论依据。相关成果以“Interplay between Grid Resolution and Pressure Decimation in Non-hydrostatic Modeling of Internal Waves”为题在最新一期《Ocean Engineering》期刊上发表。

图2 不同网格设置条件下非静压模型求解波浪频散范围对比图

 

参考文献:
[1] Shi Jian, Zheng Jinhai*, Zhang Chi*, Antoine Joly, Zhang Wei, Xu Pengfei, Sui Titi. A 39-year high resolution wave hindcast for the Chinese coast: Model validation and wave climate analysis. Ocean Engineering, 2019a, 183, 224-235.
全文链接:https://www.sciencedirect.com/science/article/pii/S0029801818318924
[2] Shi Jian, Shi Fengyan, Zheng Jinhai*, Zhang Chi, Malej Matt, Wu Guoxiang. Interplay between Grid Resolution and Pressure Decimation in Non-hydrostatic Modeling of Internal Waves. Ocean Engineering, 2019b, (in press).
[3] Shi Jian*, Shi Fengyan, Kirby James T, Ma Gangfeng, Wu Guoxiang, Tong Chaofeng, Zheng Jinhai. Pressure Decimation and Interpolation (PDI) method for a baroclinic non-hydrostatic model. Ocean Modelling, 2015, 96, 265-279.
全文链接:https://www.sciencedirect.com/science/article/pii/S146350031500181X

 

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