Yoshinori Oka

Tohoku University | Tohokudai · Department of Aerospace Engineering

A pressure distribution inside a two-dimensional rectangular cavity with a ratio L/D=5.0\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{mathrsfs} \usepackage{upgreek} \setlength{\oddsidemargin}{-69pt} \begin{document}$$L/D=5.0$$\end{document} of the c...

We developed and evaluated an anodized-aluminum pressure-sensitive paint (AA-PSP) with new formulations of free-base porphyrin, H2TCPP, as an optical unsteady pressure sensor. The luminophore H2TCPP has quite a short fluorescent lifetime (2.4 ns on the condition of the AA-PSP). The fluorescence spectroscopy result shows that the excitation waveleng...

In this study, a pressure distribution inside a two-dimensional rectangular cavity with a ratio L/D = 5.0 of the cavity length L to the depth D over supersonic flow was obtained using anodized-aluminum pressure-sensitivity paint (AA-PSP). The freestream Mach number was M = 1.85 and the frequencies of the dominant cavity modal phenomena called a Ros...

A combined stereoscopic particle image velocimetry (PIV) and acetone planar laser-induced fluorescence (PLIF) measurement system was developed to investigate turbulent mixing of a jet into a supersonic flow. The measurement was performed using a supersonic wind tunnel. Air was injected perpendicular into a Mach 2 freestream with a jet-to-freestream...