Laser-Doppler and hot-film anemometers for measurement of unsteady turbulent flow behind a prosthetic heart valve.

J. Seki, K. Hayashi, T. Nakamura, M. Umezu

研究成果: Chapter

抄録

Temporal and spatial resolutions of a hot film anemometer (CTA) and a laser Doppler anemometer (LDA) were studied on the unsteady turbulent flow generated behind a prosthetic heart valve under a pulsatile flow condition. Frequency response was lower in the laser Doppler anemometer measurements ( 1 kHz) than in the hot film anemometer ( 6 kHz). Although the calculated dimensions of the laser Doppler anemometer sampling volume were 0.06 mm in diameter and 0.4 mm in length, the actual dimensions were estimated to be about 0.3 mm and 1 mm, respectively. The hot film anemometer measurement was influenced by the partial blockage of flow caused by the hot film anemometer probe. (A)

本文言語English
ホスト出版物のタイトルIN
ホスト出版物のサブタイトルFLUID CONTROL AND MEASUREMENT, (TOKYO, JAPAN: SEP. 2-6, 1985), M. HARADA (ED.)
出版社Pergamon Press
1 , Oxford, U.K., Pergamon Press, 1986, p.269-274. (ISBN 0-08-031681-6)
ISBN(印刷版)0080316816, 9780080316819
出版ステータスPublished - 1986 1 1
外部発表はい

ASJC Scopus subject areas

  • Engineering(all)

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