风向对航母甲板风影响的大涡模拟

Large eddy simulation to the effect of wind direction on wind over the deck of aircraft carrier

采用低速气流运动控制方程组和湍流大涡模拟方法,研究了来风风向对航母甲板风的影响,得到了不同来风风向条件下,艏艉对称面附近、甲板上方低场及航母后方某点处压力和垂向速度随时间的变化关系。结果表明:航母有一定角度的侧向风对舰载机起飞有利,右舷风比左舷风有利;从有利于舰载机着舰角度看,右舷来风较左舷来风有利;从舰载机着舰下滑稳定性上看,来风风向角度越小越有利。

The control equations of air flow with lower velocity and the large eddy simulation method of turbulent flows are used to study the effect of the wind direction on the wind over the deck of aircraft carrier. The variety process of pressure and vertical velocity of air motion with time are conducted at some positions over the deck and in the air-wake of aircraft carrier for different directions of wind.When the coming wind has some wind angle,it is propitious to the take off of airplanes from the aircraft carrier,and the effect of right side coming wind is better than that of the left side. On the point of view to facilitate the landing of airplanes,the effect of the right side coming wind is better than that of the left side too. The smaller is the angle of coming winds and the better is the stability for airplanes during descending to aircraft carriers.