大型集装箱船拖曳水池敞开式风场中风阻试验与数值计算

就拖曳水池开展了风场研究,对敞开式风场风阻试验进行了可行性验证.在此基础上,对一缩尺比为1.0∶87.5的3 100箱集装箱船模进行了风阻测试与集装箱布置优化分析,结合一系列布置方案试验结果以及计算流体力学CFD数值模拟计算,讨论了集装箱布置对船舶风阻的影响.结果表明:敞开式风场中风阻试验是一种简单有效的新式测量方法;试验结果与CFD及ITTC推荐公式进行了交叉验证,具有一定可靠性,CFD在精度与细节模拟上效果更佳;布置优化可以有效减少大型集装箱船风阻.

Experimental and Numerical Study of Wind Drag of Large Containership by Using Open Wind Test in Towing Tank

Abstract： The wind resistance of a large containership is emphasized given the indication of the intent of the International Maritime Organization to the application of the key green ship design and operation index such as the energy efficiency design index(EEDI) and a tendency of the containership maximization nowadays. In this paper, on investigation were conducted and the wind profile was studied and compared with other experiment results from wind tunnel tests to validate the feasibility of the open wind resistance test for the wind resistance measurement in a towing tank. Besides, the wind drag force on a 3 100TEU containership with containers and superstructure was measured in the wind turbine test with a 1.0∶87.5 scale model. Through a series of container layout cases, the difference of the wind drag force was analyzed and simulated by using CFD. It is proved that open wind test is a simple and effective measurement. Through cross validation, the results are proved credible and CFD has the priority in terms of precision and detailed simulation. The wind drag can be reduced through configuration optimization.