Performance prediction for optical wall shear stress sensor using direct numerical simulation of fluid flow

Katsuaki Shirai, Keisuke Tsuru, Shinnosuke Obi

研究成果: Conference contribution

抜粋

We conducted a performance prediction for an optical wall shear stress sensor with using the velocity data of a direct numerical simulation. The Doppler signals were generated with respect to the path of tracer particles passing through the measurement volume. A signal processing technique was proposed to estimate the magnitude and yaw angle of local wall shear stress simultaneously from each Doppler signal. The simulated Doppler signals were processed with the technique, however the accuracy of estimating the yaw angle is not sufficient. In contrast, the estimated magnitude of wall shear stress showed a good agreement with the direct estimate from the DNS data if the yaw angle was accurately estimated. The measurement accuracy of the sensor mainly depends on estimating the yaw angle of each tracer particle. Another technique for detecting the yaw angle is needed for the accurate measurement of both the yaw angle and magnitude of local wall shear stress.

元の言語English
ホスト出版物のタイトルProceedings of the 4th ASME/JSME Joint Fluids Engineering Conference
ホスト出版物のサブタイトルVolume 1, Part A, Forums
編集者A. Ogut, Y. Tsuji, M. Kawahashi, A. Ogut, Y. Tsuji, M. Kawahashi
ページ75-80
ページ数6
出版物ステータスPublished - 2003 12 1
イベント4th ASME/JSME Joint Fluids Engineering Conference - Honolulu, HI, United States
継続期間: 2003 7 62003 7 10

出版物シリーズ

名前Proceedings of the ASME/JSME Joint Fluids Engineering Conference
1 A

Other

Other4th ASME/JSME Joint Fluids Engineering Conference
United States
Honolulu, HI
期間03/7/603/7/10

    フィンガープリント

ASJC Scopus subject areas

  • Mechanical Engineering
  • Fluid Flow and Transfer Processes

これを引用

Shirai, K., Tsuru, K., & Obi, S. (2003). Performance prediction for optical wall shear stress sensor using direct numerical simulation of fluid flow. : A. Ogut, Y. Tsuji, M. Kawahashi, A. Ogut, Y. Tsuji, & M. Kawahashi (版), Proceedings of the 4th ASME/JSME Joint Fluids Engineering Conference: Volume 1, Part A, Forums (pp. 75-80). (Proceedings of the ASME/JSME Joint Fluids Engineering Conference; 巻数 1 A).