基于直升机起降条件的舰船甲板气流场数值模拟

Numerical simulation on the flow field of vessel deck based on helicopter taking off and landing conditions

采用三维数值模拟方法对不同风向条件下的船舶外流场进行求解,结合直升机起降条件限制,分析甲板气流场参数变化与风向的关系以及对直升机起降的影响;研究不同停机坪上方气动参数分布及其与上层建筑相对位置的关系.结果表明,船首附近长期受气流绕流的影响不适合直升机起降;右舷来风时,气流绕流上层建筑形成的尾流对甲板大部分区域造成影响,不适合直升机起降;左舷来风时甲板上大部分区域均满足起降条件.

3D numerical simulation was used to solve the flow field of vessel with different wind directions. Helicopter taking off and landing conditions were concerned to analyze the relation between flow parameters on the deck and wind direction and its influence on helicopters. The relation between flow parameters above the parking apron and its relative position to the superstructure were also discussed. Results show that the air conditions near the bow are not suitable for helicopter landing. When wind comes from the star board,the air wake flowing over the superstructure has great effect on the deck conditions, which are not suitable for helicopter landing.While wind comes from the larboard,the air conditions meet the landing conditions.