TESTS AND APPLICATIONS OF A BOUSSINESQ MODEL WITH AMBIENT CURRENT  

作　　者：ZHANG Hong-sheng WANG Wei-yuan FENG Wen-jing WANG Ya-ling YANG Jian-min 

机构地区：[1]State Key Laboratory of Ocean Engineering, Shanghai Jiao Tong University, Shanghai 200240, China [2]Shanghai Water Planning and Design Research Institute, Shanghai 200232, China [3]College of Transport and Communications, Shanghai Maritime University, Shanghai 200135, China

出　　处：《Journal of Hydrodynamics》2010年第4期526-536,共11页水动力学研究与进展B辑（英文版）

基　　金：supported by the National Natural Science Foundation of China (Grant No. 40676053);the National High Technology Research and Development Program of China (863 Program, Grant No. 2006AA09A107);the Municipal Commission of Science and Technology of Shanghai (Grant No. 07DZ22027);the fund in State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University (Grant Nos. GKZD010012,GP010818)

摘　　要：A new type Boussinesq model is proposed and applied for wave propagation in a wave flume of uniform depth and over a submerged bar with current present or absent,respectively.Firstly,for the propagation of monochromatic incident wave with current absent,the Boussinesq model is tested in its complete form,and in a form without the introduction of utility velocity variables.It is validated that the introduction of utility velocity variables can improve the characteristics of velocity field,dispersion and nonlinearity.Both versions of the Boussinesq models are of higher accuracy than the fully-nonlinear fourth-order model,which is one of the best forms among the existing traditional Boussinesq models that do not incorporate breaking mechanism in one dimension.Secondly,the Boussinesq model in its complete form is applied to simulating the propagation of bichromatic incident waves with current present or absent,respectively,and the modeled results are compared to the analytical ones or the experimental ones.The modeled results are reasonable in the case of inputting bichromatic incident waves with the strong opposing current present.A new type Boussinesq model is proposed and applied for wave propagation in a wave flume of uniform depth and over a submerged bar with current present or absent,respectively.Firstly,for the propagation of monochromatic incident wave with current absent,the Boussinesq model is tested in its complete form,and in a form without the introduction of utility velocity variables.It is validated that the introduction of utility velocity variables can improve the characteristics of velocity field,dispersion and nonlinearity.Both versions of the Boussinesq models are of higher accuracy than the fully-nonlinear fourth-order model,which is one of the best forms among the existing traditional Boussinesq models that do not incorporate breaking mechanism in one dimension.Secondly,the Boussinesq model in its complete form is applied to simulating the propagation of bichromatic incident waves with current present or absent,respectively,and the modeled results are compared to the analytical ones or the experimental ones.The modeled results are reasonable in the case of inputting bichromatic incident waves with the strong opposing current present.

关 键 词：Boussinesq model ambient current wave-wave interactions velocity field bichromatic incident waves 

分 类 号：TN86[电子电信—信息与通信工程] TQ052.5[化学工程]