High-performance aerofoil at [Re]=100
| Autor: | Katsuya, Hirata, Ryo, Nozawa, Shogo, Kondo, Kazuki, Onishi, Erika, Takahashi, Hirochika, Tanigawa |
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| Jazyk: | japonština |
| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | 同志社大学ハリス理化学研究報告 = The Harris science review of Doshisha University. 60(2):43-59 |
| ISSN: | 2189-5937 |
| Popis: | 翼の空力特性研究は10^6以上の高いレイノルズ数[Re](代表長さは翼弦長[c])が多い．一方，低[Re]領域([Re] < 10^6)における翼の空力特性の把握は，無人航空機UAV/超小型航空機MAVの開発などにおいて重要である．本研究では，著者らの以前の研究を参考にして，極低[Re]領域で高い性能を期待できそうな三種類の二次元翼を対象とする．即ち，iNACA0015(前後反転させたNACA0015)とFPBi(平板翼の上半分をiNACA0015の上半分で置き換えた翼)，FPBN(平板翼の上半分をNACA0015の上半分で置き換えた翼)である．そして，[Re] = 1.0×10^2で，NACA00015やFPなどの基本的二次元翼と比較しつつ, それらの二次元翼を二次元と三次元の数値解析により調べる． The aerodynamic characteristics of aerofoils have been massively investigated at Reynolds numbers [Re]'s higher than 10^6. On the other hand, our knowledge is not enough at low [Re], in spite of the recent miniaturisation of fluid machineries. Besides, the aerofoil is used as the elemental device for drones or flying/swimming robots, and often governs their basic performances. In this study, the authors examine three kinds of high-performance aerofoils proposed for very-low [Re] on the basis of our previous findings (Hirata et al., 2011) at [Re] = 1.0×10^2 using two- and three-dimensional computations. The three aerofoils are an iNACA0015 (the NACA0015 placed back to front), a FPBi (a flat plate blended with the iNACA0015 as its upper half) and a FPBN (a flat plate blended with the NACA0015 as its upper half). The authors compare them with such basic airfoils as a NACA0015 and a FP (a flat plate). As a result, the FPBi shows the best performance among five kinds of aerofoils. 論文名・抄録中の[Re]は斜体文字、^6, ^2は上付き文字 |
| Databáze: | OpenAIRE |
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