High Order Entropy Condition Scheme for Mixed Euler/N-S Equations
-
摘要: 针对在工程问题中使用N-S方程计算量大的问题,提出只在粘性作用显著的局部区域求解N-S方程,在流场的其余部分采用Euler方程计算的办法来模拟具有复杂外形的流动问题,并提出了一种基于高阶熵条件格式的算子分裂算法.应用所构造的算法对绕迫击炮弹的亚、跨超声速流动进行了模拟计算.计算结果与试验数据的对比表明,所提出的方法是切实可行的.
-
关键词:
- 分裂 /
- 高阶 /
- 半群 /
- Euler/N-S方程混合模拟算法
Abstract: In order to circumvent the problem of a huge amount of computing time required for solving viscous flows over bodies with complicated configuration using N-S equations, a mixed Euler/N-S solver was proposed. The solver is capable of preserving sufficient accuracy by using N-S equations in the flow field where viscous effects emerge as the dominant factor and employing Euler equations in the remaining regions. The primary scheme was constructed based on a high order entropy condition algorithm, in conjunction with an operator splitting concept deduced from theory of semi-group. The developed method was usedto simulate subsonic, transonic as well as supersonic flows over a mortar configuration. The numerical results were compared favorably with experimental data.-
Key words:
- decomposition /
- higher order /
- semi-group /
- mixed Euler/N-S equation simulation
-
[1] 金 生,李椿萱. 计算三维粘性/无粘性干扰流动的准联立分区算法[J]. 航空学报, 1996,17(6):663~670 Jin Sheng, Li Chunxuan. A domain decomposed quasi simultaneous method for computing three dimensional viscous/inviscid interactive flows[J]. Acta Aeronautica et Astronautica Sinica, 1996,17(6):663~670(in Chinese) [2] Chima R V. Inviscid and viscous flows in cascades with an explicit multiple-grid algorithm[J]. AIAA J, 1985, 23:1556~1563 [3] Xu Chuanju. An efficient method for the Navier-Stokes/Euler coupled equations via a collocation approximation[J]. SIAM J Numer Anal, 2000,38:1217~1242 [4] Dong Haitao, Zhang Lidong, Li Chunxuan. High order discontinuity decomposition entropy condition schemes for Euler equations[J]. Computational Fluid Dynamics Journal, 2002,10(4):448~457 期刊类型引用(8)
1. 郭启敏,张鹏,王应洋,王石. 无人机自主航迹规划智能算法综述. 航空兵器. 2023(03): 29-40 . 百度学术
2. 高石印,石玮,王聪阜,刘辉. 基于强化学习的雷达对抗侦察无人机航线规划. 空天预警研究学报. 2023(02): 119-123 . 百度学术
3. 刘开芬,冯烨,张飞霞,陈晔. 一种多无人机分布式路径规划算法. 电讯技术. 2023(10): 1507-1514 . 百度学术
4. 张冬,杨继国,尤灵辰,杨大鹏. 基于可变自主等级的有人机/无人机控制方法. 无人系统技术. 2023(06): 80-90 . 百度学术
5. 马申佳,木子尧,曹新益,程煜峰,兰盾,安磊. 基于FOA的无人机协同态势感知搜寻模型构建及应用. 网络安全与数据治理. 2023(S1): 137-142 . 百度学术
6. 刘明,闫井超,文炜,洪东亮. 基于复杂逻辑约束的自主应急联动系统设计. 电子设计工程. 2022(02): 138-141+146 . 百度学术
7. 王凯. 面向铁路工程三维信息重建的无人机航线规划改进方法. 铁道建筑. 2022(10): 151-155 . 百度学术
8. 贺井然,何广军,于学生. 基于改进蜂群算法的无人机路径规划. 火力与指挥控制. 2021(10): 103-106 . 百度学术
其他类型引用(3)
-

计量
- 文章访问数: 2651
- HTML全文浏览量: 55
- PDF下载量: 945
- 被引次数: 11