孟江山,路川藤,罗小峰,丁伟.基于GPU并行的厦门附近海域潮波传播数值模拟研究[J].中国水利水电科学研究院学报,2021,19(4):424-433
基于GPU并行的厦门附近海域潮波传播数值模拟研究
The tidal wave propagation simulation in sea area near Xiamen with GPU parallel computation
投稿时间:2020-07-10  
DOI:10.13244/j.cnki.jiwhr.20200126
中文关键词:  GPU并行计算  潮波传播  厦门海域  潮波变形
英文关键词:GPU parallel computation  tidal wave propagation  Xiamen sea  tidal wave deformation
基金项目:国家重点研发计划(2019YFB1600700)
作者单位E-mail
孟江山 中交广州航道局有限公司, 广东 广州 510000  
路川藤 南京水利科学研究院, 江苏 南京 210029 lct000abc@163.com 
罗小峰 南京水利科学研究院, 江苏 南京 210029  
丁伟 河海大学, 江苏 南京 210024  
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中文摘要:
      厦门周边海域岛屿众多,潮汐汊道交错,水流运动复杂,本文针对该海域开展基于GPU并行的潮波传播精细化模拟研究。基于GPU并行算法构建了厦门附近海域高分辨率二维潮流数学模型,计算效率与单核CPU相比,可提高约180倍。模拟计算了2019年全年厦门周边海域的潮波传播,研究表明,厦门岛附近潮量主要来自厦门湾,潮波自外海向九龙江口方向传播,高潮位逐渐升高,低潮位逐渐降低。同安湾方向潮波受厦门湾和围头湾两股潮波影响,其潮波特性与围头湾更为相似。厦门海域M2分潮占绝对主导地位,其振幅占所有分潮的41.2%,全日分潮K1分潮振幅值最大,同安湾与九龙江口M2分潮振幅接近,K1分潮九龙江口振幅较大,潮波变形程度同安湾较大。
英文摘要:
      There are many islands in the sea area around Xiamen,with intertwined tidal channels and complex tidal wave propagation. The GPU-based refined simulation of tidal wave propagation is carried out in this paper. Based on GPU parallel algorithm, a high-resolution two-dimensional tidal current mathematical model for Xiamen sea area is constructed. Compared with single core CPU, the computational efficiency can be increased by about 180 times. The tidal wave propagation around Xiamen Island in 2019 is simulated and calculated. The results show that the tidal volume near Xiamen Island mainly comes from Xiamen Bay, and the tidal wave propagates from the open sea to the Jiulong River Estuary. The high tide level gradually increases and the low tide level gradually decreases. The directional tidal wave in Tong'an Bay is affected by two tidal waves in Xiamen Bay and Weitou Bay, and its tidal wave characteristics are more similar to that in Weitou Bay. The amplitude of M2 component is 41.2% of all tidal components in Xiamen sea area. The amplitude of K1 component of diurnal component is the largest. The amplitude of M2 component of Tong'an Bay and Jiulong River estuary is close. The amplitude of K1 component in Jiulongjiang Estuary is larger and the deformation degree of tidal wave is larger in Tong'an Bay.
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