A Model Experiment On Hydrodynamic Behaviors Of A Semi-submersible Offshore Aquaculture Platform

With the implementation and further advance of the national sea power strategy,higher requirements have been put forward for aquaculture industry of China.In the field of offshore aquaculture facilities,China lags far behind developed countries such as Europe and the United States,which has basically formed a system of "Norwegian design + European key supporting + China general assembly manufacturing".Although the study of offshore aquaculture facilities in our country started relatively late and has not yet formed a mature theoretical system,we need to do a thorough study of a mature offshore aquaculture platform,study the relevant hydrodynamic characteristics and provide valuable data support for our country’s offshore aquaculture industry.This experiment is based on semi-submersible aquaculture platform.The experiment of physical model was made of organic glass as the main material,adopting 1:120 model scale,In the process of making experiment model,the main structure mainly considers gravity similarity and geometrical similarity,the net clothing system adopts the double scale similarity based on the gravity similarity criterion,the balancing weight system takes account of gravity similarity,the anchoring system mainly considers geometric similarity and elasticity similarity.Considering the actual situation of laboratory flume and the experiment platform adopted four anchorage ways,studying its hydrodynamic properties by designing 13 working conditions of the wave to simulate the actual sea condition,and exploring related characteristics when towing.The article is divided into six chapters,the first chapter introduces the research background,the development and research of aquaculture platform,the significance of the further development of offshore aquaculture;the second chapter introduces the design process of experiment model and detailed experiment parameters;the third chapter introduces the hydrodynamic behaviors of the platform under regular wave and its response amplitude operator;the fourth chapter describes the hydrodynamic characteristics of the platform under the combination of the wave and current;the fifth chapter explores the tension and inclination of the platform when it is towing.In the last chapter,the achievements of aquaculture platform are summarized,and the further study and new prospects are presented.