極低レイノルズ数領域での様々な二次元翼型の空力特性と流れ

髙橋 江梨香, 大西 一希, 谷川 博哉, 内田 孝紀, 杉谷 賢一郎, 平田 勝哉

研究成果: Contribution to journalArticle

抄録

<p>We have been requiring more precise knowledge about the aerodynamic characteristics of the airfoil especially in low Reynolds-number ranges less than 10<sup>6</sup>, because of the recent miniaturisation of robots such as unmanned aerial vehicles known as UAVs or drones and micro air vehicles known as MAVs, in addition to the importance of insect/bird flight dynamics, small-scale machines like micro fluid machineries and micro combustion engines and so on. In the present study, we investigate the relationship between various aerodynamic characteristics and attack angle <i>α</i> for flat plate NACA0015 and iNACA0015 (the NACA0015 placed back to front) by numerical analysis and water-tank experiment at <i>Re</i> = 1.0×10<sup>2</sup> - 8.0×10<sup>2</sup>. Then, we investigate the effects of attack angle <i>α</i> upon various aerodynamic characteristics such as the lift coefficient <i>C<sub>L</sub></i>, drag coefficient <i>C<sub>D</sub></i> and the lift-to-drag ratio <i>C<sub>L</sub></i>/<i>C<sub>D</sub></i> . In order to discuss the revealed <i>α</i> effects, we visualise the flow around the airfoils using the <i>Q</i> value, the helicity, streamlines' distribution around an airfoils at <i>α</i> = 0 – 24 deg., together with PIV analysis based on water-tank experiment.</p>
寄稿の翻訳タイトルAerodynamic Characteristics and Flow of Various 2D Airfoils in a Very-Low Range of Reynolds Numbers
本文言語日本語
ページ(範囲)S0510205
ジャーナル年次大会
2018
0
DOI
出版ステータス出版済み - 2018

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