| 融合式翼梢小翼对飞机尾涡演化的影响 |
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| 引用本文： | 何昕,赵瑞,王琴,苑长江.融合式翼梢小翼对飞机尾涡演化的影响[J].科学技术与工程,2023,23(30):13165-13171. |
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| 作者姓名： | 何昕 赵瑞 王琴 苑长江 |
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| 作者单位： | 中国民用航空飞行学院 |
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| 基金项目： | 民航局安全能力项目([2022]186)；中国民用航空飞行学院科研创新团队(JG2022-09)；中国民用航空飞行学院省级大学生创新创业训练计划项目(S202210624040) |
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| 摘 要： | 随着空中交通流量的增长，尾流间隔精细化、动态化缩减成为了民航发展的一种趋势，研究尾流演化过程也成为了民航领域关注的前沿科学问题。基于此，本文采用雷诺平均 N-S方程方法研究了B737-800飞机有无融合式翼梢小翼对飞机尾涡的演化过程影响。利用NASA动态尾流系统中APA尾涡消散模型计算了不同气象环境参数下有无小翼的尾涡环量变化。结果表明：融合式翼梢小翼可以分割翼尖涡，有效改变翼尖气流的流动特性，增大速度梯度，减小尾涡速度、尾涡能量集中程度和尾涡强度；不同大气湍流耗散率和大气层结稳定度下，小翼对尾涡强度的减小量不同。
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| 关 键 词： | 融合式翼梢小翼 尾涡演化 数值模拟 APA尾涡消散模型 |
| 收稿时间： | 2022/12/16 0:00:00 |
| 修稿时间： | 2023/7/29 0:00:00 |
Influence of blended winglets on the evolution of aircraft wake vortex |
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| He Xin,Zhao Rui,Wang Qin,Yuan Changjiang.Influence of blended winglets on the evolution of aircraft wake vortex[J].Science Technology and Engineering,2023,23(30):13165-13171. |
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| Authors: | He Xin Zhao Rui Wang Qin Yuan Changjiang |
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| Affiliation: | Civil Aviation Flight University of China |
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| Abstract: | With the increase in air traffic flow, the refinement and dynamic reduction of wake separation have become a trend in the development of civil aviation, and the study of wake evolution has become a frontier scientific issue in the field of civil aviation. Based on this, the Reynolds Averaged Navier Stokes Equations method was used to study the influence on the evolution of the aircraft wake vortex whether the B737-800 aircraft was equipped with the blended winglets. The change of wake vortex circulation was calculated by using the APA wake vortex dissipation model in the NASA dynamic wake system under different meteorological environment parameters. It was found that the blended winglets can divide the wingtip vortex, and change the flow characteristics of the wingtip effectively. It could also increase the velocity gradient, reduce the wake vortex velocity, wake vortex energy concentration, and wake vortex intensity. The reduction of the wake vortex strength by the winglets is different under different rates of atmospheric turbulence dissipation and atmospheric stratification stability. |
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| Keywords: | blended winglets tail vortex evolution numerical simulation APA tail vortex dissipation model |
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