中石化广西液化天然气项目灾害性海浪特征参数数值推算
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摘要
以近30aWRF再分析风场作为驱动,利用SWAN数值模式对中石化广西液化天然气(LNG)项目海域的灾害性海浪特征参数进行数值模拟,并与设计波浪要素进行对比。通过模拟结果与T/P高度计波浪资料、浮标及海洋站观测资料的对比验证,表明波浪模拟结果较好。项目外海海域有效波高极值集中在E～SE向,强浪向为SE(SSE)向。项目工程本身主要受到SSE、S和SSW向波浪的影响,其中S向影响最大。项目海域100a一遇极端高潮位和设计高潮位下SSE向波高的评估值均大于设计值,除极端高潮位下有效波高外SW向的评估值与设计值相当,其他方向波高的评估值低于设计值。
Driven by the recent 30 reanalysis wind field, the characteristic parameters of disastrous wave in Sinopec Guangxi liquefied natural gas(LNG) project were calculated by the SWAN numerical model and compared with the designed values. The simulation results were fairly well in comparison validation of the T/P altimeter, the buoy, and the ocean station wave data. Extreme values of effective wave heights were mainly located at the east～southeast direction, and the strong wave direction was in the southeast(south-south-east) in the LNG project open sea. The LNG project itself was mainly affected by wave direction in the south-south-east, the south and the south-south-west, and the most drastic wave was in south direction. In the LNG project surrounding waters, evaluation results of wave height at 100 a return period extreme and designed tidal levels in the south-south-east direction were greater than the designed values. The evaluation results and designed values in the southwest direction were fairly equivalence, and the evaluation results were lower than the designed values in other directions.
Driven by the recent 30 reanalysis wind field, the characteristic parameters of disastrous wave in Sinopec Guangxi liquefied natural gas(LNG) project were calculated by the SWAN numerical model and compared with the designed values. The simulation results were fairly well in comparison validation of the T/P altimeter, the buoy, and the ocean station wave data. Extreme values of effective wave heights were mainly located at the east～southeast direction, and the strong wave direction was in the southeast(south-south-east) in the LNG project open sea. The LNG project itself was mainly affected by wave direction in the south-south-east, the south and the south-south-west, and the most drastic wave was in south direction. In the LNG project surrounding waters, evaluation results of wave height at 100 a return period extreme and designed tidal levels in the south-south-east direction were greater than the designed values. The evaluation results and designed values in the southwest direction were fairly equivalence, and the evaluation results were lower than the designed values in other directions.
引文
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[3] 潘晓东,林顺利,姚玉娟,等.南麂海域灾害性海浪分布特征[J].武汉:中国水运(下半月),2016,16(12):160-162.
[4] 陶爱峰,沈至淳,李硕,等.中国灾害性海浪研究进展[J].北京:科技导报,2018,36(14):26-34.
[5] 国家海洋局.中国海洋灾害公报,2017.
[6] 廖振华,刘青明.湄洲湾海域波浪数值模拟研究[J].武汉:中国水运(下半月),2014,14(9):125-126.
[7] 邵杰,胡列翔,杨雷霞,等.SWAN模型与BW模型在舟山泗礁换流站设计波浪计算中的联合应用[J].北京:水运工程,2015(10):13-19.
[8] Booij N ,Ris R C ,Holthuijsen L H .A third-generation wave model for coastal regions:1.Model description and validation [J].Washington:Journal of Geophysical Research Oceans,1999,104(C4):7649-7666.
[9] Nayak S,Bhaskaran P K,Venkatesan R.Near-shore wave induced setup along Kalpakkam coast during an extreme cyclone event in the Bay of Bengal [J].Oxford:Ocean Engineering,2012,55:52-61.
[10] 李煊,李庆杰,周良明,等.基于SWAN模式和折绕射模式的近岸海浪数值模拟[J].青岛:海洋湖沼通报,2017,4:33-44.
[11] 戴路,李瑞杰,梁连松,等.江苏沿海台风浪数值模拟[J].大连:海洋环境科学,2016,35(6):838-845.
[12] 宋伟伟,陈国平,严士常,等.基于台风浪后报模型的外海重现期波浪要素分析[J].北京:水运工程,2013(1):51-54.
[13] 宋晓波,史剑,李瑞杰,等.基于浪流耦合模型的台风浪数值模拟[J].青岛:海洋湖沼通报,2015(1):13-20.
[14] Yu H,Li J ,Wu K ,et al.A global high-resolution ocean wave model improved by assimilating the satellite altimeter significant wave height [J].Amstedan:International Journal of Applied Earth Observation and Geoinformation,2018,70:43-50.
[15] Ying M,Zhang W,Yu H,et al.An Overview of the China Meteorological Administration Tropical Cyclone Database [J].Bostan:Journal of Atmospheric and Oceanic Technology,2014,31(2):287-301.
[16] Komen G J,Hasselmann K.On the Existence of a Fully Developed Wind-Sea Spectrum [J].Journal of Physical Oceanography,1984,14(8):1271-1285.