Search Results - "Naoko TOKUGAWA"

Numerical and Experimental Analysis of Three-Dimensional Boundary-Layer Transition Induced by Isolated Cylindrical Roughness Elements by Ishida, Takahiro, Ohira, Keisuke, Hosoi, Rio, Tokugawa, Naoko, Tsukahara, Takahiro

“…Extensive research to establish an index of roughness that causes abrupt turbulent transition downstream of the roughness and affect natural laminar flow is…”
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Experimental investigation on friction drag reduction on an airfoil by passive blowing by Shiho HIROKAWA, Kaoruko ETO, Koji FUKAGATA, Naoko TOKUGAWA

“…Friction drag reduction effect of a passive blowing on a Clark-Y airfoil is investigated. Uniform blowing, conducted in a wall-normal direction on a relatively…”
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Parametric study toward optimization of blowing and suction locations for improving lift-to-drag ratio on a Clark-Y airfoil by Masahiro OHASHI, Yuki MORITA, Shiho HIROKAWA, Koji FUKAGATA, Naoko TOKUGAWA

“…Reynolds-averaged Navier–Stokes simulations (RANS) of flows around a Clark-Y airfoil with uniform blowing (UB) and uniform suction (US) are performed aiming at…”
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Friction drag reduction of a spatially developing boundary layer using a combined uniform suction and blowing by Daigo NOGUCHI, Koji FUKAGATA, Naoko TOKUGAWA

“…Uniform suction or blowing from the wall is one of the methods to reduce the friction drag. The uniform suction improves the stability of a laminar boundary…”
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Mechanism of self-induced vibration of a liquid drop based on the surface tension fluctuation by TOKUGAWA, N, TAKAKI, R

“…Mechanism of self-induced vibration of a superheated liquid drop, which is levitated on a hot-plate with a thin vapor sheet in between, is analyzed…”
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