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| Numerical simulation on dynamic characteristics of double-delta wing flow field during pitch-up motion |
| Received:August 25, 2011 Revised:March 09, 2012 |
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| DOI：10.7511/jslx20126016 |
| KeyWord:NND scheme numerical simulation double-delta wing pitch-up motion |
| Author | Institution |
| 刘昕 |
中国空气动力研究与发展中心,绵阳 |
| 陈亮中 |
中国空气动力研究与发展中心,绵阳 |
| 林敬周 |
中国空气动力研究与发展中心,绵阳 |
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| Abstract: |
| 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. |
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