Experimental investigation of the generation of large-amplitude internal solitary wave and its interaction with a submerged slender body  

作　　者：WEI Gang DU Hui XU XiaoHui ZHANG YuanMing QU ZiYun HU TianQun YOU YunXiang 

机构地区：[1]College of Meteorology and Oceanography,PLA University of Science and Technology [2]State Key Laboratory of Ocean Engineering,Shanghai Jiaotong University

出　　处：《Science China(Physics,Mechanics & Astronomy)》2014年第2期301-310,共10页中国科学：物理学、力学、天文学（英文版）

基　　金：supported by the National Natural Science Foundation of China(Grant No.11072267);the National High Technology Research and Development Program of China(Grant No.2008AA09Z316);the Pre-Research Foundation of PLA University of Science&Technology(Grant No.KYLYZLXY1202)

摘　　要：A principle of generating the nonlinear large-amplitude internal wave in a stratified fluid tank with large cross-section is pro- posed according to the ＇jalousie＇ control mode. A new wave-maker based on the principle was manufactured and the experi- ments on the generation and evolution of internal solitary wave were conducted. Both the validity of the new device and ap- plicability range of the KdV-type internal soliton theory were tested. Furthermore, a measurement technique of hydrodynamic load of internal waves was developed. By means of accurately measuring slight variations of internal wave forces exerted on a slender body in the tank, their interaction characteristics were determined. It is shown that through establishing the similarity between the model scale in the stratified fluid tank and the full scale in the numerical simulation the obtained measurement re- suits of internal wave forces are confirmed to be correct.A principle of generating the nonlinear large-amplitude internal wave in a stratified fluid tank with large cross-section is proposed according to the‘jalousie’control mode.A new wave-maker based on the principle was manufactured and the experiments on the generation and evolution of internal solitary wave were conducted.Both the validity of the new device and applicability range of the KdV-type internal soliton theory were tested.Furthermore,a measurement technique of hydrodynamic load of internal waves was developed.By means of accurately measuring slight variations of internal wave forces exerted on a slender body in the tank,their interaction characteristics were determined.It is shown that through establishing the similarity between the model scale in the stratified fluid tank and the full scale in the numerical simulation the obtained measurement results of internal wave forces are confirmed to be correct.

关 键 词：internal solitary wave wave-maker stratified fluid slender body INTERACTION 

分 类 号：O352[理学—流体力学]