Quantitative visualization of boundary layers by developing quasi-common-path phase-shifting interferometer

Eita Shoji, Ryota Nakaoku, Atsuki Komiya, Junnosuke Okajima, Shigenao Maruyama

研究成果: Article査読

12 被引用数 (Scopus)

抄録

The objective of this study is to achieve accurate and quantitative visualization of the boundary layer using a novel optical system that offers a large visualization area, fewer disturbance effects, integration with a wind tunnel and high phase, spatial and temporal resolution. A novel optical configuration was proposed to realize these features. In addition, high phase and spatial resolution could be realized by introducing a phase-shifting image processing technique. Finally, a novel prism was specially designed to implement the phase-shifting technique. In this study, the proposed system was evaluated by using it to quantitatively visualize boundary layers around a circular cylinder and over a flat plate. The effect of a tripwire on the flow was visualized by an interferogram. In the experiments on flow over a flat plate, the temperature distributions in the thermal boundary layer were measured accurately, and the velocity distributions were estimated from the measured temperature distributions. The experimental data were compared with a semi-analytical solution. Good agreement was obtained, and the relative error was within 5.0% in the temperature measurement.

本文言語English
ページ(範囲)231-240
ページ数10
ジャーナルExperimental Thermal and Fluid Science
60
DOI
出版ステータスPublished - 2015 1月 1

ASJC Scopus subject areas

  • 化学工学(全般)
  • 原子力エネルギーおよび原子力工学
  • 航空宇宙工学
  • 機械工学
  • 流体および伝熱

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