舰船绕流流场的数值模拟  

Numerical Simulation of Flow Field around Ships

作　　者：杨思帆 梁仍康 邢苗苗 宋筱然 张伟[1] YANG Sifan;LIANG Rengkang;XING Miaomiao;SONG Xiaoran;ZHANG Wei(School of Civil Engineering and Architecture,Southwest University of Science and Technology,Mianyang 621010,Sichuan,China)

机构地区：[1]西南科技大学土木工程与建筑学院,四川绵阳621010

出　　处：《西南科技大学学报》2023年第3期98-104,共7页Journal of Southwest University of Science and Technology

基　　金：国家自然科学基金项目(11902278)。

摘　　要：开展舰船绕流流场研究对认识舰载直升机起降过程中面临的气流环境具有重要意义。采用CFD方法对舰船航行过程中0°风向角10 m/s和20 m/s来流风速情况下舰船周围流场进行了数值模拟。结果表明:舰船上层建筑导致后端气流有明显紊乱但对着舰甲板的气流干扰程度较小;不同来流风速情况下流动变化规律大致相同;受机库影响,形成的下冲气流及其冲击到甲板在机库附近形成的低速回流区是舰载直升机进行起降任务所面临的主要问题。研究结果对舰船设计及舰载直升机安全快速起降具有参考价值。Conducting research on the flow field around ships is of great significance for understanding the airflow environment faced by shipborne helicopter during takeoff and landing.The numerical simulation of the flow field around a ship was carried out using the CFD method under the conditions of wind direction angle of 0°and incoming wind speeds of 10 m/s and 20 m/s during navigation.The results indicate that the superstructure of the ship causes significant turbulence in the aft flow,but the degree of airflow interference towards the deck is relatively small.The flow pattern is roughly the same under different incoming wind speeds.The downwash flow generated by the hangar and the low-speed flow area formed near the deck due to the impact of the downwash flow around the hangar are the main problems faced by the shipborne helicopter during takeoff and landing tasks.The research results have reference value for ship design and safe and fast takeoff and landing of shipborne helicopters.

关 键 词：舰船 舰载直升机 绕流流场 数值模拟 

分 类 号：O354[理学—流体力学] U674.701[理学—力学]