在苏伊士运河扩建工程竣工之际，计算船舶在苏伊士运河扩建航道中的航行阻力对节省船舶燃料、减少磨损起着重要作用。本文基于 STAR-CCM+软件对集装箱船(Direct Transshipment Container，DTC)在苏伊士运河中航行阻力进行数值研究，以雷诺平均方法进行数值模拟，VOF(Volume of Fluid)模型来模拟兴波，采取六自由度变形模型和SST k-ω(Shear Stress Transport k-ω model)湍流模式来模拟湍流的影响，通过水池试验数据验证了方法的可靠性。基于此，探究不同航速、航道断面系数、纵倾角度条件下DTC集装箱船模航行阻力变化情况，对比其计算结果，分析其航行阻力的数值规律。结果表明:当Fr从 0。044 到 0。097 时，船舶总阻力系数随速度增大而减小，当Fr超过 0。097 后，船舶总阻力系数急剧增大;航道断面系数变大，船舶总阻力系数变小;在航速不变的情况下，保持船舶尾部适当倾斜，可以达到减阻效果。本文相关成果可为船舶航行减阻、提高海上运输能源效率提供理论支撑。
CFD-Based Study of Navigational Resistance Characteristics of DTC Ships in the Suez Canal
On the occasion of the completion of the Suez Canal Expansion Project,the calculation of the navigational resistance of a ship in the Suez Canal Expansion Channel plays an important role in saving fuel and reducing wear and tear of the ship.In this paper,a numerical study of the resistance of DTC container ships in the Suez Canal is carried out based on the STAR-CCM+software.Numerical simulations are carried out by the Reynolds Averaging Method(RANS),the VOF model is used to simulate the rising waves,and the effects of turbulence are adopted by the DFBI(six-degree-of-freedom)deformation model and SST k-ω turbulence mode,and the reliability of the method is verified by the pool test data.Based on this,the change of navigational resistance of DTC container ship mode under different speeds,channel section coefficients and trim angles is investigated,and the calculation results are compared to analyse the numerical law of its navigational resistance.The results show that:when Fr is from 0.044 to 0.097,the total resistance coefficient of the ship decreases with the increase of speed,and when Fr exceeds 0.097,the total resistance coefficient of the ship increases sharply;when the channel section coefficient becomes larger,the total resistance coefficient of the ship becomes smaller;in the case of unchanged speed,keeping the ship's trim appropriately,the effect of drag reduction can be achieved.The results of this research can provide theoretical support for ship navigation drag reduction and improvement of energy efficiency of marine transport.
万方数据
维普
