Unsteady pressure-sensitive paint measurement based on the heterodyne method using low frame rate camera

Yu Matsuda, Daisuke Yorita, Yasuhiro Egami, Tomohiro Kameya, Noriaki Kakihara, Hiroki Yamaguchi, Keisuke Asai, Tomohide Niimi

研究成果: Article査読

6 被引用数 (Scopus)

抄録

The pressure-sensitive paint technique based on the heterodyne method was proposed for the precise pressure measurement of unsteady flow fields. This measurement is realized by detecting the beat signal that results from interference between a modulating illumination light source and a pressure fluctuation. The beat signal is captured by a camera with a considerably lower frame rate than the frequency of the pressure fluctuation. By carefully adjusting the frequency of the light and the camera frame rate, the signal at the frequency of interest is detected, while the noise signals at other frequencies are eliminated. To demonstrate the proposed method, we measured the pressure fluctuations in a resonance tube at the fundamental, second, and third harmonics. The pressure fluctuation distributions were successfully obtained and were consistent with measurements from a pressure transducer. The proposed method is a useful technique for measuring unsteady phenomena.

本文言語English
論文番号105110
ジャーナルReview of Scientific Instruments
84
10
DOI
出版ステータスPublished - 2013 10
外部発表はい

ASJC Scopus subject areas

  • 器械工学

フィンガープリント

「Unsteady pressure-sensitive paint measurement based on the heterodyne method using low frame rate camera」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル