Research On Optimization Of Fishing Fleet Layout Based On CFD

Due to china’s large ocean area and long coastline,coastal cities and ports close to the ocean have developed rapidly economically.The number of ships launched has also increased year by year.There are a large number of fishing boats in my country,so the resistance performance of fishing boats Conducting research is of great significance to fishermen.According to the phenomenon that groups in life will use certain formations to reduce overall resistance when they are exercising,such as fish swimming and geese flying south,there must be a layout with high energy saving rate when the fishing fleet is sailing.This paper takes the fishing fleet as the object of CFD numerical simulation,and calculates the overall resistance of the fishing fleet in different formations.The numerical calculation results are analyzed to obtain a better layout,which provides a basis for the energy-saving and drag reduction of the fishing fleet.A trimaran with the Wigley ship as a single hull was selected as the research object,and the resistance performance under the influence of free water surface was analyzed.The calculation results were compared with the test results to verify the reliability of the CFD method.The free surface waveforms,The wave height and the pressure on the surface of the hull.Then,using the Wigley ship as the research object,the total resistance value of the two ships was compared with twice the resistance value of a single ship to verify that the team sailing can save energy.Finally,taking a fishing boat as the research object,the two fishing boats are designed with 18 layout schemes composed of different horizontal and longitudinal distances and 11 layout schemes composed of three fishing boats.The total resistance value of the fleet is compared with the resistance of a single boat.The value is compared,the maximum total resistance gain value is compared,that is,the layout is the optimal layout of the fleet,and the free surface waveform,wave height and hull surface pressure are analyzed and analyzed.