Bank Effects Hydrodynamic Process Research Of Inland River Ships

The current under the impetus of the economy and technology,Ship’s large-scale trend has become increasingly apparent,the ship main dimensions continuous increase,narrow channel in inland river for the maneuverability of the ship is put forward higher and higher requirements.But in Fuling-Chongqing three gorges reach with fluctuating backwater area,When a year down period river restoration for the natural characteristics of the channel,At this time,Small water flow,low water level,water flow velocity is larger,and there are more adverse flow obstruction,these waters are relatively large ships in terms of the depth of the water is shallow,narrow channel width.For ship sailing along bank,bank effect is unsafe factor,which often make ships close to the bank and happen collision accidents,cause casualties and property losses.So,it is necessary to study the bank effects.In this paper,mainly through the model test and theoretical analysis,combined with STAR-CCM + software numerical simulation analysis,the bank effect factors such as speed,water depth,distance between ship and shore on the hydrodynamic mechanism of the classification research,the main research work is as follows:(1)Inland river ships sailing near bank design of experiment,hydrodynamic measurement and analysis.analysis and design using stress sensor model in the process of model ships to dock hydrodynamic accurate measurement and data acquisition,measurement,under the conditions of different velocity and different water depths ship-to-shore distance on the influence of hydrodynamic,according to the measured results,analysis of flow velocity,water depth and ship shore from the impact on the ship hydrodynamic mechanism.(2)Inland river ships sailing near wall numerical simulation.Building under the condition of complex hydrodynamic calculation model of navigation of ships,and the condition of different ship-to-shore distance when the flow condition of ship hydrodynamic numerical simulation calculation,combined with the test results,further analyze the velocity,water depth and ship shore from the impact on the ship hydrodynamic mechanism.(3)Near bank navigation safety distance study of inland river ships.According to the results of model test and numerical calculation,comparison andanalysis of ship navigation safety distance under different flow conditions.Through a comprehensive water speed,water depth distance between ship and shore to the ship navigation safety distance,proposed the run on the narrow inland waterway shipping safety distance formula of the bank effects,further obtain the ship sailing safety distance of evaluation standard,the evaluation method for inland river ships bank effects security issues is a innovative attempt.the inland river ships bank effects of hydrodynamic research can play a role in the following three aspects:First of all,for inland waterway by near bank sailing ship maneuvering motion prediction,operational guidance to ship to ensure driving safety of the ship.Second,in the area of the ship type selection has a certain guiding value.Finally,it for people to build proper shape channel can provide the necessary reference.