Numerical Simulation of Separated Flows Around Slender Body at High-Angle-of-Attack By Fully Implicit E-CUSP Upwind Scheme

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Numerical Simulation of Separated Flows Around Slender Body at High-Angle-of-Attack By Fully Implicit E-CUSP Upwind Scheme

更新时间：2025-07-09

- Numerical Simulation of Separated Flows Around Slender Body at High-Angle-of-Attack By Fully Implicit E-CUSP Upwind Scheme
- Vol. 45, Issue 9, Pages: 54-58+113(2011)
- 作者机构：
  
  1. 长安大学理学院,西安,710064
  2. 西安电子科技大学理学院,西安,710071
- 作者简介：
- 基金信息：
- DOI：
  CLC： V211.3
- Online First：10 September 2011，
  
  Published：2011
- 稿件说明：
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Numerical Simulation of Separated Flows Around Slender Body at High-Angle-of-Attack By Fully Implicit E-CUSP Upwind Scheme[J]. 2011, 45(9): 54-58+113.
DOI：

Numerical Simulation of Separated Flows Around Slender Body at High-Angle-of-Attack By Fully Implicit E-CUSP Upwind Scheme[J]. 2011, 45(9): 54-58+113. DOI：

摘要

采用全隐式、低耗散E-CUSP格式

通过求解雷诺平均Navier-Stokes方程耦合Spalart-Allmaras(SA)湍流模型

模拟了细长旋成体在超声速、大攻角下的流场

分析了背风面涡的发展过程.结果表明:E-CUSP格式耦合SA湍流模型能够准确地模拟背风面的流动分离和精细的二次涡

对横向分离具有较高的模拟精度; 预测的物面压力系数分布和激波位置与实验数据吻合良好

力和力矩的相对误差在1.98%之内; E-CUSP格式可用于模拟复杂的分离流动

具有高的计算精度和效率.

Abstract

Adopting a fully implicit low diffusion E-CUSP(LDE)upwind scheme

the turbulent flow fields around a slender body at supersonic and high-angle-of-attack is numerically simulated by solving Reynolds averaged Navier-Stokes equations coupled with Spalart-Allmaras turbulence model. The leeward vortices developing process is analyzed. The results show that LDE scheme with the Spalart-Allmaras turbulence model enables to simulate leeward flow separation and capture the subtle secondary vortices with high accuracy

and has high simulation precision for cross separation. The predicted pressure distributions on the wall and shock wave positions coincide well with the experiment

and the relative errors of the obtained forces and moments are within 1.98% compared with the experimental data

which demonstrates that LDE scheme can be used to simulate complex separated flows with high accuracy and efficiency.

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references

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YANG Yong, DUAN Yi, ZHANG Qiang. Comparison of three turbulence models in supersonic high-attack-angle separated flows[J]. Acta Aerodynamica Sinica, 2006, 24(3): 371-375.

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ZHA Gecheng, SHEN Yiqing, WANG Baoyuan. Calculation of transonic flows using WENO method with a low diffusion E-CUSP upwind scheme, AIAA 2008-0745 [R]. Reston, VA, USA: AIAA, 2008.

SPALART P R, ALLMARAS S R. A one-equation turbulence model for aerodynamic flows, AIAA Paper 92-0439 [R]. Reston, VA, USA: AIAA, 1992.

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WALTER B S, TREVOR B, MARC L, et al. The application of CFD to the prediction of missile body vertices, AIAA Paper 97-0637 [R]. Reston, VA, USA: AIAA, 1997.

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