Research On Flow Characteristics And Safe Navigation Of Inland River Bend

As the process of globalization is getting faster and faster,international trade is becoming more and more frequent,and the trade volume between cities is also increasing.Water transportation plays an important role in this process.Water transportation has a large volume and low price,so most of the trade transportation is done by water transportation.However,the incidence of water safety accidents at bends is high,which seriously affects the lives of crew members and the safety of social property.Therefore,this paper studies the characteristics of water flow at bends and proposes relevant safety navigation measures to reduce the incidence of water safety accidents.Over the years,many scholars have carried out research on the characteristics of water flow in bends and achieved results.At the same time,they have proposed formulas for the calculation of circulation in bends.However,there are few studies on the differentiation of circulation in bends under different bends.Studying the flow of curved channels and designing appropriate channel widths are the focus of people's research,but how to minimize the impact of the flow of curved channels on ships is the blind spot of research.There is a lot of turbulence around the curved bridge piers,which seriously affects the safe navigation of the ship,but the research on the turbulence at the curved bridge piers is not sufficient.However,there is little research on how to set the channel dimensions of the curved bridge area safely due to the influence of water flow.According to the current situation,the research content of this article is as follows:1.Summarize the previous research results,analyze the current situation at home and abroad of curved channel research,and point out that the current research on curved channel is insufficient.2.Use Fluent software to simulate the state of water flow under different curve degrees,and use scientific methods to analyze the flow characteristics.3.Develop the research on the pressure angle of the ship's flow.Based on the characteristics of the simulated water flow,analyze the characteristics of the ship through the curve and the scientific derivation,and get the calculation formula of the pressure angle of the ship's flow.4.The method for determining the minimum distance between the pier and the channel of the curved channel is studied.The minimum distance is the basis for the reasonable arrangement of the curves.The calculation formula of the minimum distance is obtained through simulation and the derivation of related formulas.5.The ship passing capacity in curved bridge area is studied.The ship passing through the bridge area is analyzed,and the influencing factors are summarized as the channel width,the channel water depth,and the height of the bridge exposed to the air.The width of the channel is mainly studied.The width of the channel should be greater than the sum of the wind-induced drift,the flow-induced drift,and the track width.Finally,the formula for calculating the channel width is given.6.According to the previous research,the countermeasures for safe navigation of ships in curved waterways are given.