侧风影响下的CSPRs飞机离场尾流运动研究

Study on Departure Wake Motion of Aircraft with CSPRs under Crosswind

受起飞飞机尾流影响,我国近距平行跑道实行“一起一降”运行模式,未能充分发挥技术优势。为评估尾流对近距平行跑道配对离场方案的影响,通过CFD数值模拟的方法,研究了不同侧风情况下起飞飞机尾流的运动情况。以B737-800为例,设置计算域、划分网格,选取k-ωSST模型对尾流流场进行数值计算,选定起飞阶段离地35ft时的飞机作为研究对象,计算不同侧风条件下的飞机尾流场分布,得出B737-800在静风、侧风3m/s尾涡侧向移动距离分别为36m、325m,此结果为评估配对离场方案提供了参考。

Due to the influence of the wake of take-off aircraft,the operation mode of"landing together"is implemented on the closely spaced parallel runway in China,which fails to give full play to its technical advantages.In order to evaluate the influence of the wake on the paired departure scheme of a closely spaced parallel runway,the motion of the wake of an aircraft taking off under different crosswind conditions was studied by CFD numerical simulation.Taking B737-800 as an example,the calculation domain was set and the grid was divided.The K-ωSST model was selected for numerical calculation of the wake flow field.The aircraft 35ft above the ground in the take-off stage was selected as the research object to calculate the distribution of the wake field under different crosswind conditions.It is concluded that the lateral movement distances of the wake vortex of b737-800 are 36m and 325m respectively at 3m/s and 3m/s in the calm wind,which provides a reference for evaluating the paired departure scheme.