Wind Loads On Large Container Ships Theoretical Analysis And Calculation

In recent years, international oil price instability, coupled with the increasing awarenessof environmental protection, driving in the paper, the ship fuel efficiency, economy of greenship more long-term demand. Therefore, in order to improve the economic efficiency,reducing the ship operating cost and social benefit, ship energy saving emission reduction is aproblem not to be ignored.In recent years, ship is large change is increasingly distinct, ship above water volumebecomes larger, the wind receiving area increases, the wind load on the impact is alsogrowing. Therefore, for the superstructure of large ship, wind load assessment is necessary.Especially large prominent container ship, the oil tanker, bulk cargo ship and otherdisplacement type vessel, container ship because of stacked containers, above the watersurface to volume ratio below the water surface is much greater, so by wind load effect isgreater, so the container ship fuel consumption, safety of navigation as well as the navigationtrack has great influence.Therefore this article studies domestic and foreign wind load on ship, wind load in otherapplications, a comparative analysis of the existing computational methods such asIsherwood ship wind load, wind load calculation method, the Fujiwara Minwen componentseparation type wind load derivation, NKK and Maritime Association proposed wind loadcalculation method, these methods are based on wind tunnel test, analysis of large amounts ofdata of ship or the actual sea measurement and the method, is currently obtaining morereliable method of wind load.Calculation of different containers stacked state, and tested in a wind tunnel, not onlyneeds a lot of manpower and material resources, but also time-consuming. In this paper, theuse of Fortran language, computer programming and experimental results are compared andanalyzed, discussed the wind loads on ship flow field and load effect. Use CFD software tonumerical simulation wind tunnel, considering the non loaded state containers stacked indifferent forms, through the establishment of calculation of container ship wind load model,different wind angle, discussion and analysis of wind load on the ship flow field and load arestudied, the numerical simulation results were compared with experimental results and analysis. Discussion on Calculation of CFD container ship wind load factor, discusses thegrid, discrete format and turbulence models for different factors such as selection, calculationof wind load calculation of container ship and affects the accuracy of the results.