Time-series measurements of turbulent flow field using image processing system

K. Kobayashi, J. Sakakibara, K. Hishida, M. Maeda

研究成果: Conference contribution

3 被引用数 (Scopus)

抄録

A time series whole field velocity measurement was accomplished by the digital image processing. Laser light sheet illuminated the flow field synchronizing with CCD camera, and obtained images were recorded on the VTR with interval of 1/30 sec. Individual images were transferred from VTR under the control of personal computer with DSP (digital signal processor) to the image grabber, and the velocity vectors were evaluated using the cross-correlation technique. The time series analysis of the system showed good agreement with those of simultaneously applied LDV measurements. The present techniques applied to the thermally stratified shear flow in a horizontal pipe provided instantaneous and time series whole field velocities from 1400 planes (47 sec), and spatial eddy motions were revealed from the measurement which was unable to measure by point-measuring techniques.

本文言語English
ホスト出版物のタイトルExperimental and Numerical Flow Visualization
出版社Publ by ASME
ページ155-162
ページ数8
ISBN(印刷版)0791808742
出版ステータスPublished - 1991 12 1
イベントWinter Annual Meeting of the American Society of Mechanical Engineers - Atlanta, GA, USA
継続期間: 1991 12 11991 12 6

出版物シリーズ

名前American Society of Mechanical Engineers, Fluids Engineering Division (Publication) FED
128

Other

OtherWinter Annual Meeting of the American Society of Mechanical Engineers
CityAtlanta, GA, USA
Period91/12/191/12/6

ASJC Scopus subject areas

  • 工学(全般)

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