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http://arks.princeton.edu/ark:/88435/dsp01hx11xj352
Title: | Static measurements of a NACA 0021 airfoil at high Reynolds numbers |
Contributors: | Brunner, Claudia E. Kiefer, Janik Hansen, Martin O. L. Hultmark, Marcus National Science Foundation grant CBET 1652583 National Defense Science and Engineering Graduate Fellowship Otto Mønsted Travel Grant |
Keywords: | airfoil high Reynolds number aerodynamics NACA 0021 |
Issue Date: | 4-Aug-2021 |
Publisher: | Princeton University |
Abstract: | Reynolds number effects on the aerodynamics of the moderately thick NACA 0021 airfoil were experimentally studied by means of surface-pressure measurements. The use of a high-pressure wind tunnel allowed for variation of the chord Reynolds number over a range of 5.0 × 10^5 ≤ Re_c ≤ 7.9 × 10^6. The angle of attack was incrementally increased and decreased over a range of 0° ≤ alpha ≤ 40°, spanning both the attached and stalled regime at all Reynolds numbers. As such, attached and separated conditions, as well as the static stall and reattachment processes were studied. A fundamental change in the flow behaviour was observed around Re_c= 2.0 × 10^6. As the Reynolds number was increased beyond this value, the stall type gradually shifted from trailing-edge stall to leading-edge stall. The stall angle and the maximum lift coefficient increased with Reynolds number. Once the flow was separated, the separation point moved upstream and the suction peak decreased in magnitude with increasing Reynolds number. Two distinct types of hysteresis in reattachment were observed. |
URI: | https://doi.org/10.34770/9mv0-zd78 http://arks.princeton.edu/ark:/88435/dsp01hx11xj352 |
Referenced By: | https://doi.org/10.1007/s00348-021-03267-8 |
Appears in Collections: | MAE Research Data Sets |
Files in This Item:
File | Description | Size | Format | |
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readMe.txt | 3.31 kB | Text | View/Download | |
pressuretaps.txt | 433 B | Text | View/Download | |
Re7900000_decreasingAngle_corrected.txt | 1.31 kB | Text | View/Download | |
Re7900000_increasingAngle_corrected.txt | 1.3 kB | Text | View/Download | |
Re7000000_decreasingAngle_corrected.txt | 1.29 kB | Text | View/Download | |
Re7000000_increasingAngle_corrected.txt | 1.27 kB | Text | View/Download | |
Re5000000_decreasingAngle_corrected.txt | 1.3 kB | Text | View/Download | |
Re5900000_decreasingAngle_corrected.txt | 1.27 kB | Text | View/Download | |
Re5900000_increasingAngle_corrected.txt | 1.33 kB | Text | View/Download | |
Re4000000_decreasingAngle_corrected.txt | 1.3 kB | Text | View/Download | |
Re5000000_increasingAngle_corrected.txt | 1.34 kB | Text | View/Download | |
Re3000000_decreasingAngle_corrected.txt | 1.3 kB | Text | View/Download | |
Re3000000_increasingAngle_corrected.txt | 1.35 kB | Text | View/Download | |
Re4000000_increasingAngle_corrected.txt | 1.35 kB | Text | View/Download | |
Re1500000_decreasingAngle_corrected.txt | 624 B | Text | View/Download | |
Re2000000_decreasingAngle_corrected.txt | 1.28 kB | Text | View/Download | |
Re2000000_increasingAngle_corrected.txt | 1.33 kB | Text | View/Download | |
Re500000_decreasingAngle_corrected.txt | 1.15 kB | Text | View/Download | |
Re1000000_decreasingAngle_corrected.txt | 1.03 kB | Text | View/Download | |
Re1000000_increasingAngle_corrected.txt | 1.08 kB | Text | View/Download | |
Re1500000_increasingAngle_corrected.txt | 678 B | Text | View/Download | |
Re500000_increasingAngle_corrected.txt | 1.2 kB | Text | View/Download | |
Re7900000_decreasingAoA_raw.txt | 16.97 kB | Text | View/Download | |
Re7000000_decreasingAoA_raw.txt | 16.86 kB | Text | View/Download | |
Re7900000_increasingAoA_raw.txt | 17.4 kB | Text | View/Download | |
Re5900000_decreasingAoA_raw.txt | 16.95 kB | Text | View/Download | |
Re7000000_increasingAoA_raw.txt | 17.3 kB | Text | View/Download | |
Re5000000_decreasingAoA_raw.txt | 17.02 kB | Text | View/Download | |
Re5000000_increasingAoA_raw.txt | 17.55 kB | Text | View/Download | |
Re5900000_increasingAoA_raw.txt | 17.45 kB | Text | View/Download | |
Re4000000_decreasingAoA_raw.txt | 17.05 kB | Text | View/Download | |
Re4000000_increasingAoA_raw.txt | 17.6 kB | Text | View/Download | |
Re3000000_decreasingAoA_raw.txt | 17.08 kB | Text | View/Download | |
Re3000000_increasingAoA_raw.txt | 17.62 kB | Text | View/Download | |
Re2000000_decreasingAoA_raw.txt | 17 kB | Text | View/Download | |
Re2000000_increasingAoA_raw.txt | 17.64 kB | Text | View/Download | |
Re1500000_decreasingAoA_raw.txt | 7.35 kB | Text | View/Download | |
Re1500000_increasingAoA_raw.txt | 7.89 kB | Text | View/Download | |
Re1000000_decreasingAoA_raw.txt | 13.34 kB | Text | View/Download | |
Re1000000_increasingAoA_raw.txt | 13.76 kB | Text | View/Download | |
Re500000_decreasingAoA_raw.txt | 14.98 kB | Text | View/Download | |
Re500000_increasingAoA_raw.txt | 15.3 kB | Text | View/Download |
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