Analysis of the Attached Vortex Model for the Flow Characteristics of Wing Near-Field Wakes

XU Xiangyang; LI Liangxing; XIANG Zutao

doi:10.7652/xjtuxb202504020

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Analysis of the Attached Vortex Model for the Flow Characteristics of Wing Near-Field Wakes

更新时间：2026-01-06

- Analysis of the Attached Vortex Model for the Flow Characteristics of Wing Near-Field Wakes
- Journal of Xi’an Jiaotong University Vol. 59, Issue 4, Pages: 213-222(2025)
- 作者机构：
  
  西安交通大学动力工程多相流国家重点实验室， 710049，西安
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202504020
  CLC： V211.4
- Received：07 November 2024，
  
  Online First：31 December 2024，
  
  Published：10 April 2025
- 稿件说明：
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XU Xiangyang, LI Liangxing, XIANG Zutao. Analysis of the Attached Vortex Model for the Flow Characteristics of Wing Near-Field Wakes[J]. Journal of Xi’an Jiaotong University, 2025, 59(4): 213-222.
DOI：

XU Xiangyang, LI Liangxing, XIANG Zutao. Analysis of the Attached Vortex Model for the Flow Characteristics of Wing Near-Field Wakes[J]. Journal of Xi’an Jiaotong University, 2025, 59(4): 213-222. DOI： 10.7652/xjtuxb202504020.

摘要

为研究飞机尾流演化过程中的旋涡初始流动特性，提出了一种基于附着涡模型的尾流初始特征参数计算方法，用于准确计算飞机近场初始尾流环量、涡核间距和涡核半径等特征参数。采用SST

k-ω

湍流模型对NACA0012直机翼的尾流特性进行了三维数值模拟研究，分析了3种展弦比、3种迎角及3种来流速度下的近场尾流流动特性，并通过附着涡模型对模拟结果进行验证与分析，建立了近场尾流初始流动特征参数的计算模型。结果表明：与传统基于最大涡量值和最小压力位置确定涡核位置的方法相比，根据附着涡模型计算的尾流速度分布来确定涡核位置和半径的方法更为精确，近场尾流环量与Rankine模型预测的结果最为接近；利用拟合得到的机翼展向附着涡环量分布，尾流环量计算平均误差为7%，涡核间距和涡核半径计算平均误差为15%。基于附着涡模型的尾流初始特征参数计算方法比基于椭圆形载荷机翼计算方法更准确，更具备普适性。

Abstract

To investigate the initial flow characteristics of vortices during the evolution of aircraft wake

a novel method for calculating the initial characteristic parameters of wakes based on the attached vortex model is proposed to accurately calculate characteristic parameters such as the initial wake circulation

vortex core spacing

and vortex core radius in the near field of aircraft wakes. The near-field wake characteristics of a NACA0012 straight wing are numerically simulated in three dimensions using the SST

k-ω

turbulent model. The near-field wake flow characteristics under three aspect ratios

three angles of attack

and three freestream velocities are analyzed. The simulated results are validated and analyzed using the attached vortex model

and a calculation model for the initial flow characteristic parameters of near-field wakes is established. The findings indicate that compared to traditional methods that rely on maximum vorticity and minimum pressure positions to determine vortex core locations

the method of determining the vortex core position and radius based on the wake velocity distribution calculated by the attached vortex model is more accurate. The near-field wake circulation closely aligns with predictions from the Rankine model. By using the fitted distribution of the wing spanwise attached vortex circulation

the average error of wake circulation calculation is 7%

and the average error of vortex core spacing and vortex core radius calculation is 15%. The method of calculating the initial characteristic parameters of wakes based on the attached vortex model is more accurate and universal than the metho

d based on the elliptical load wing calculation.

关键词

Keywords

references

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