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胶州湾潮流场的示踪粒子数值模拟研究 被引量:10

The Particle Tracking Numerical Experiment of Flow Field in the Jiaozhou Bay
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摘要 本文采用直角坐标系统,矩形网格技术,将ECOMSED模式应用于胶州湾内粒子运动轨迹模拟试验。在ECOMSED模式三维水动力模块基础上,启用保守粒子的示踪模型,模拟粒子在湾内的运动轨迹,得到胶州湾排污口污染物在湾内表、中、底3层的运动路径,从而为排污口选址和陆源污染治理方案提供环境依据,以达到使湾内及附近海域受污染最低的目的。通过模拟获得了胶州湾及其附近海域三维潮流水平与垂向分布结构,以及此海域的若干个流涡的水平分布状况。粒子示踪的模拟结果表明,粒子的运动轨迹与湾内流速流向相一致,即示踪粒子的运动轨迹与湾内流场有关,此外也受到粒子释放时刻的影响,高潮时释放的粒子更容易向湾外漂移,利于污染物的输运。 With rectangular coordinates system and rectangular grid technology,ECOMSED model is applied to the movement tracking simulation experiment of particles in the Jiaozhou Bay.Based on the 3-D Hydrodynamics module of ECOMSED model,the tracking model of conservative particles is established to simulate the movement tracking of floaters in the Jiaozhou Bay.From the experiment,the movements tracking of contamination from sewerage diffusers in the Bay on the surface layer,middle layer and bottom layer are indicated which can provide environmental gist for choosing sewerage diffusers'location and solving the pollution problem from land,in order to reduce the pollution in the Bay and its adjacent sea area.The horizontal and vertical structures of the 3-D tidal current field and the horizontal distribution of a few of current eddy are obtained by simulation in the Jiaozhou Bay and its adjacent sea area.And the computed results match well with the observations.The particle tracking simulation's result indicates that the movement tracking of particles is in accord with the velocity vector of tidal current,that is to say the movement tracking of particles is related to the tidal current field in the Bay.The released time of particles affects the movement.The particles are easy to excurse to the outer of the Bay when they were released in the time of high tide.
出处 《中国海洋大学学报(自然科学版)》 CAS CSCD 北大核心 2010年第11期29-34,共6页 Periodical of Ocean University of China
基金 国家高技术研究发展计划项目(2007AA06A403)资助
关键词 胶州湾 潮流场 ECOMSED模式 水动力模块 粒子示踪模块 数值模拟 Jiaozhou Bay flow field ECOMSED model hydrodynamics module particle tracking module numerical simulation
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