کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5473063 | 1520077 | 2016 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
AVT-183 diamond wing flow field characteristics Part 1: Varying leading-edge roughness and the effects on flow separation onset
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی هوافضا
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: AVT-183 diamond wing flow field characteristics Part 1: Varying leading-edge roughness and the effects on flow separation onset AVT-183 diamond wing flow field characteristics Part 1: Varying leading-edge roughness and the effects on flow separation onset](/preview/png/5473063.png)
چکیده انگلیسی
Experimental investigations on a 53° leading-edge sweep diamond wing configuration with rounded leading-edge contour are presented. The analyses pertain to recent work that was conducted within the NATO Science and Technology Organization (STO) task group AVT-183 (Applied Vehicle Technology panel). The results were obtained in a low-speed wind tunnel facility and include aerodynamic forces and moments, and time-averaged surface pressures. Special emphasis is placed on the effects of different surface roughness, which was applied in the experimental analyses at the wing leading edge to fix turbulent boundary-layer characteristics. The results show that the flow separation onset and the emerging leading-edge vortex are very sensitive to the roughness height and any leading-edge contour modification. Compared to the free transition case, both reasonably-tripped and over-tripped cases are obtained, which is discussed in detail. Moreover, measurement repeatability issues are reviewed from a short-term and a long-term perspective. As an outcome, one specific leading-edge roughness is selected for the target flow conditions, which provided the baseline for subsequent flow field investigations and general CFD validation within the task group AVT-183.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Aerospace Science and Technology - Volume 57, October 2016, Pages 18-30
Journal: Aerospace Science and Technology - Volume 57, October 2016, Pages 18-30
نویسندگان
Andreas Hövelmann, Florian Knoth, Christian Breitsamter,