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| 全隐式E-CUSP迎风格式大攻角分离流数值模拟 | |
| 引用本文： | 郑秋亚,封建湖,梁益华.全隐式E-CUSP迎风格式大攻角分离流数值模拟[J].西安交通大学学报,2011,45(9):54-58,113. |
| 作者姓名： | 郑秋亚 封建湖 梁益华 |
| 作者单位： | 1. 长安大学理学院,710064,西安;西安电子科技大学理学院,710071,西安 2. 长安大学理学院,710064,西安 3. 中国航空计算技术研究所航空气动力数值模拟重点实验室,710068,西安 |
| 基金项目： | 国家自然科学基金资助项目(60974082); 航空科学基金资助项目(20081431) |
| 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. |
| 关 键 词： | Navier-Stokes方程 数值模拟 细长体 湍流模型 迎风格式 分离涡 飞行稳定性 |
Numerical Simulation of Separated Flows Around Slender Body at High-Angle-of-Attack By Fully Implicit E-CUSP Upwind Scheme |
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| ZHENG Qiuya,FENG Jianhu,LIANG Yihua.Numerical Simulation of Separated Flows Around Slender Body at High-Angle-of-Attack By Fully Implicit E-CUSP Upwind Scheme[J].Journal of Xi'an Jiaotong University,2011,45(9):54-58,113. | |
| Authors: | ZHENG Qiuya FENG Jianhu LIANG Yihua |
| Institution: | 1.School of Science, Chang′an University,Xi′an 710064,China;2.School of Science,Xidian University,Xi′an 710071,China;3.Aeronautical Laboratory of Computational Fluid Dynamics,Aeronautics Computing Technique Research Institute,Xi′an 710068,China) |
| 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,a... |
| Keywords: | Navier-Stokes equations numerical simulation slender body turbulence models upwind schemes vortices flight stability |
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