渤海湾流场以及污染物分布的数值模拟研究  

NUMERICAL SIMULATION OF TIDAL CURRENT AND POLLUTANT DISTRIBUTION OF BOHAI BAY

作　　者：王泽良[1] 王日新[1] 陶建华[1] 

机构地区：[1]天津大学力学系

出　　处：《海洋与湖沼》1999年第2期224-230,共7页Oceanologia Et Limnologia Sinica

基　　金：国家八五攻关资助!85-908-04-07-01

摘　　要：为了弄清渤海湾这一具有广阔潮间带典型海域的潮流以及污染物分布状况，采用考虑“窄缝”的二维动边界潮流和对流扩散模型对渤海湾流场以及污染物分布的浓度场进行了数值模拟研究，并应用潮流以及污染物分布的实测资料对研究模型进行了验证，数值模拟结果与实测值符合良好。Bohai Bay is a typical semi-closed bay in the western Part of Bohai Sea The main characters of the bay are very shallow water depth, wide mild slope mud beach, and heavy pollution loads. In this paper, 2-D depth-averaged hydrodynamic model and advection-diffusion model with moving boundary are used to simulate the velocity field and pollutant distribution of Bohai Bay. In order to beat the moving boundary following the hdal rise and fall, hydrodynamic equahtions and advection-diffusion equation using the slot method are used.) Hydrodynamic model Mass equationwhere are the unit discharge in x and y directions respectively; Z is water elevation and α are paramters, Z is seabed elevation.Momentum equalions are of the same form as that without slot.2) Advection-diffusion model Where. C is Pollutant concenimtion parameter; H is water depth Z0 is slope bottom elevati on; Sm is source term; Ex Ey are diffusion cocefficient in x and y directions respectively. The very small difference between the observed data and the numerical results for velocity and pollutant concentration distribution showed that the models presented in this paper are reliable, especially for the boatment of moving boundary conditions. The above models were used to investigate the environmental capacity, division of function area and oceenic disposal of wastewater of Bohai Bay.

关 键 词：渤海湾 动边界 海流场 海洋污染 数值模拟 

分 类 号：X55[环境科学与工程—环境工程] P731.22[天文地球—海洋科学]