| 刘昕,陈亮中,林敬周.双三角翼拉升流场特性数值模拟研究[J].计算力学学报,2012,29(6):905~911 |
|
| 
码上扫一扫！ |
| 双三角翼拉升流场特性数值模拟研究 |
| Numerical simulation on dynamic characteristics of double-delta wing flow field during pitch-up motion |
| 投稿时间：2011-08-25 修订日期：2012-03-09 |
| DOI：10.7511/jslx20126016 |
| 中文关键词: NND格式 数值模拟 双三角翼 拉升运动 |
| 英文关键词:NND scheme numerical simulation double-delta wing pitch-up motion |
| 基金项目:国家自然科学基金(11002155)资助项目. |
|
| 摘要点击次数: 2208 |
| 全文下载次数: 1346 |
| 中文摘要: |
| 发展了适用于双三角翼大攻角非定常分离流场模拟的数值方法,开展双三角翼拉升运动的动态流场特性研究。通过减缩频率、转轴位置和起始攻角的变化,仔细分析了这些运动参数对动态流场施加影响的物理机制,有利于提高对双三角翼在拉升条件下的非定常特性和流场滞后效应等非线性现象的认识。 |
| 英文摘要: |
| Numerical methods suitable for computing the unsteady separated flow around a double-delta wing at large angles of attack are developed in this paper,and the dynamic characteristics of the flow fields during pitch-up motion is studied.The physical mechanism of the dynamic flow performance,caused by variations of three motion parameters such as the reduced frequency,the position of rotation axis and the initiative angle of attack,is carefully investigated.It is of much benefit to understand the unsteady characteristics when a double-delta wing pitches up and the nonlinear phenomena of the flow field with lag effect. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
