基于计算流体力学的配对进近尾流安全间隔研究

doi:10.16265/j.cnki.issn1003-3033.2022.05.2075

中国安全科学学报 ›› 2022, Vol. 32 ›› Issue (5): 77-83.doi: 10.16265/j.cnki.issn1003-3033.2022.05.2075

基于计算流体力学的配对进近尾流安全间隔研究

何昕¹(), 马义龙¹^,²

¹ 中国民用航空飞行学院空中交通管理学院,四川广汉 618307
² 西南交通大学希望学院轨道交通学院,四川成都 610400

收稿日期:2021-12-10 修回日期:2022-03-20 出版日期:2022-08-17 发布日期:2022-11-28
作者简介:
何昕 (1979—),女,浙江浦江人,硕士,副教授,主要从事空中交通管理、空管新技术等方面的研究。E-mail: hexin513@sina.com。
基金资助:
民航局民航安全能力建设资金支持项目(TM2018-3-1/2); 中国民用航空飞行学院面上项目(J2020-066); 四川省教育综合改革试点项目经费支持项目(2018019); 2019年度国家级大学生创新训练项目(201910624040)

Study on wake safety intervals of PA based on CFD

HE Xin¹(), MA Yilong¹^,²

¹ College of Air Traffic Management, Civil Aviation Flight University of China, Guanghan Sichuan 618307, China
² School of Rail Transportation, Southwest Jiaotong University Hope College, Chengdu Sichuan China 610400, China

Received:2021-12-10 Revised:2022-03-20 Online:2022-08-17 Published:2022-11-28

摘要/Abstract

摘要：

为解决多变环境条件下通过单纯数学建模方法预测尾流存在精度不足的问题,首先,研究近距平行跑(CSPRs)道配对进近(PA)模式尾流安全区的基本要求;然后,通过建立运输机机翼尾涡流场,采用k-ε模型数值模拟计算侧风影响下的翼尖涡涡量场,得到配对前机尾涡空间分布特征,分析PA尾流安全区,提出基于计算流体力学(CFD)的PA尾流安全间隔计算方法;最后,以上海虹桥机场为例,采用数值模拟方法计算配对前后机分别为B747-400和B737-800,侧风风速3 m/s时的情况,验证该方法的科学性和有效性。结果表明:侧风可以加剧尾流的横向位移,配对后机可在配对前机上风方向跟进飞行避开尾流影响;当飞行环境一定时,前机翼展是PA最大尾流安全间隔值的决定性因素;基于CFD的PA尾流安全间隔计算结果能较好地拟合试验测量值,提高PA尾流安全间隔值的计算精确性;相同配对机型条件下,基于CFD的PA尾流安全间隔计算结果远小于现行尾流间隔标准。

关键词: 计算流体力学(CFD), 配对进近(PA), 尾流安全间隔, 近距平行跑道(CSPRs), 数值仿真

Abstract:

In order to address the lack of accuracy in wake prediction by simple mathematical modeling method under changeable environment, firstly, basic requirements of wake safety zones in PA mode for CSPRs were studied. Secondly, wingtip vortex under influence of crosswind was numerically simulated by adopting k-epsilon model in a vortex field created at the tail of transport wing, and spatial distribution of wake vortices before pairing was obtained. Then, a calculation method of PA wake safety intervals was put forward based on CFD after analyzing PA wake safety zones. Finally, with Shanghai Hongqiao Airport as an example, numerical simulation was conducted for a case where lead aircraft and trail aircraft were B747-400 and B737-800 respectively under crosswind of 3 m/s to verify the proposed method in terms of scientificity and effectiveness. The results show that crosswind can intensify transverse displacement of wakes, and trail aircraft can follow up flight in upwind direction of lead aircraft so as to avoid influence of wakes. When flight environment is constant, lead aircraft's wingspan is the decisive factor for maximum wake safety interval of PA. It is also found that the calculation results of safety intervals based on CFD can better fit experimental measured values, thus improving calculation accuracy. Moreover, CFD-based results are far less than current wake interval standard under the condition of same paired types.

Key words: computational fluid dynamics (CFD), paired approach (PA), wake safety interval, closely spaced parallel runways(CSPRs), numerical simulation

何昕, 马义龙. 基于计算流体力学的配对进近尾流安全间隔研究[J]. 中国安全科学学报, 2022, 32(5): 77-83.

HE Xin, MA Yilong. Study on wake safety intervals of PA based on CFD[J]. China Safety Science Journal, 2022, 32(5): 77-83.

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基于计算流体力学的配对进近尾流安全间隔研究

Study on wake safety intervals of PA based on CFD

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