Wing planform dependency on optimum supersonic airfoil by Yuki KISHI, Masahiro KANAZAKI, Yoshikazu MAKINO, Kisa MATSUSHIMA

Subjects: Get full text

A study of aerodynamic sound generated from an airfoil placed in a flow with turbulence (1st report: In the case of airfoil subjected to homogeneous turbulence) by Noriaki KOBAYASHI, Yasumasa SUZUKI, Chisachi KATO

“…The test airfoil has NACA0012 wing section with a chord length of 150 mm and a spanwise length of 500 mm. …”
Get full text

A study of aerodynamic sound generated from an airfoil placed in a flow with turbulence (2nd Report: In the case of airfoil subjected to circular-cylinder wake) by Noriaki KOBAYASHI, Yasumasa SUZUKI, Chisachi KATO

“…The wind velocity is set to 30 m/s, which results in an airfoil Reynolds number of 3.0×105. The circular cylinder is set 100 mm upstream of the leading edge of the airfoil, and its diameter as well as installation position in the transverse direction are varied. …”
Get full text

Numerical study on the aerodynamics of an airfoil moving close to an air-water interface by Yasuaki KANEKO, Takeshi OMORI, Takeo KAJISHIMA

Subjects: Get full text

Quantitative analysis of latent space in airfoil shape generation using variational autoencoders by Kazuo YONEKURA

Subjects: Get full text

Flow control of leading edge separation using DBD plasma actuator by Yasuaki KOZATO, Yuta HIROSE, Satoshi KIKUCHI, Shigeki IMAO

Subjects: Get full text

Advanced Kriging response surface approach for efficient design optimization by Wataru YAMAZAKI

Subjects: Get full text

Study of efficient fluid-structure interaction analysis for morphing wing with corrugated structures by Kensuke SONEDA, Tomohiro YOKOZEKI, Taro IMAMURA

“…In contrast, the differences in the deformed shapes of the airfoils are relatively small between the two. With the knowledge obtained above, a new FSI analysis model is proposed; in the FSI analysis model, firstly the deformation of the airfoil in the airflow is analyzed using XFOIL, and after the deformation shape is obtained, UTCart evaluates the aerodynamic performances and the pressure distribution of the converged airfoil, and finally the driving force is recalculated using the pressure distribution newly obtained by UTCart.…”
Get full text

Optimization of burst frequency using extremum-seeking method for flow control by PSJA by Yudai TAGUCHI, Kakuji OGAWARA, Hidenori SHINGIN

“…Experiments were performed to detect the optimum frequency that maximizes the effect of reducing flow separation around an NACA0015 airfoil. The burst input is expected to improve the effect of flow control and to reduce the power consumption. …”
Get full text

Effect of blade number on flow around straight-bladed vertical axis wind turbine by Qing'an LI, Takao MAEDA, Yasunari KAMADA, Junsuke MURATA, Toshiaki KAWABATA, Kazuma FURUKAWA, Tetsuya KOGAKI

“…Firstly, rotor performances have been compared with the results of an experiment based on the use of the NACA 0021 airfoil, such as rotor torque and power. And then, for each rotor configuration, flow field characteristics are investigated at optimum values of tip speed ratio by means of Laser Doppler Velocimeter (LDV), allowing a quantification of the influence of blade number on flow geometric features and dynamic quantities. …”
Get full text

Gurney flap effect using jet induced by plasma actuator by Daiki SUZUKI, Yasuchika YUKI, Hitoshi ISHIKAWA, Takayasu FUJINO, Takehiko SEGAWA

“…Wall-normal-jet type and counter-jet type plasma actuators are attached on the pressure surface near the trailing edge of NACA0015 airfoil, and jets are induced from x/c = 0.9 toward wall normal and opposite directions against the main flow. …”
Get full text