大型船舶空气尾流场防治新技术的数值模拟

大型船舶空气尾流场对海上飞机安全降落有重要的影响,因此对其进行有效防治技术研究在保障飞机安全、大型船舶海上活动等方面有重要意义。采用计算流体力学方法开展大型船舶空气尾流场特性及其防治技术的数值模拟研究,以带有Spalart-Allmaras湍流模型的Reynolds平均Navier-Stokes方程构建模拟平台开展数值模拟,得到大型船舶空气尾流场规律特性。在此基础上,提出主动补气防治新技术,分别阐述其理论基础、核心方法和技术方案;根据主动补气防治技术思想和理论,进一步开展数值模拟验证研究。结果表明,该技术能显著改善空气尾流场的流场品质,使流场趋于平稳均匀,减小对飞机海上降落的影响。该技术进一步完善了可实现工程应用,并保证飞机海上降落安全,有巨大的应用潜力。

Numerical modeling for new prevention and control technologies of air wake field of large ships

Because the air wake fields of large ships have a great influence on the safety of aircraft landing, of which the effective technologies are of great significance, in order to guarantee the safety of aircraft and maritime activities. Computational Fluid Dynamics method is chose to study the air wake field characteristics of large ships and the prevention and control technologies. The Reynolds Averaged Navier-Stokes equations with Spalart- Allmaras turbulence model are used to construct simulation platform, numerical modeled work is carried out through the platform. The regular and characteristic of air wake fields of large ships are analyzed. Furthermore, new prevention and control technologies of air wake field of large ships are proposed, theoretical basic, center method and technical proposal are expounded; according to the thinking and theory, numerical modeling method is used to test the new prevention and control technologies of air wake field of large ships. Numerical results show that the new method can significantly improve the quality of the air wake field, making the flow field stable and uniform, and hence it can reduce the impacts on the aircraft landing on large ships. After the method is further improved, the engineering application can be realized to ensure the safety of aircraft landing on ships, potentially.