Study on wind load characteristics for a container ship under different stacking modes

  Objective  sShip performance evaluation and optimization technology with regard to wind wave factors of real sea area is the key to ship energy efficiency design, and wind load is an important part of the environmental load of wind waves of ships in real sea area. For large container ships, the stacking mode has significant influence on the wind load characteristics of ships. In order to quantitatively study the influence rule,

  Methods  series of wind tunnel tests with multiple wind speeds under full wind angle range are carried out for 10 000 TEU large container ship model with the same container loading quantity but different stacking modes. CFD numerical simulation calculation and Fujiwara's empirical formulas are applied for cross validation.

  Results  Analysis results show that the shape parameters for transverse and longitudinal projected areas of ships exposed to the wind are of significant impact on wind load characteristics. Conventional stacking modes with streamlined or stepped layouts have better wind load characteristics in general. Special stacking modes with multiple vacancies on the deck occupy certain advantages in such aspects as yaw moment performance.

  Conclusions   The study provides technical reference for container stacking mode design and calculation and evaluation of wind load in practical engineering.