BIOLUMINESCENCE IMAGING FOR MEASURING FLUID SHEAR DISTRUBUTIONS

Proceedings of the International Conference on Coastal Engineering

Yuta Mitobe²  Jun Sakai¹  Yasunori Watanabe²  Yasuo Niida² 

[1] Docon co ltd;Hokkaido University

关键词: Bioluminescence;    Shear;    Ripple;   

DOI  :  10.9753/icce.v33.waves.31

学科分类：建筑学

来源: Coastal Engineering Research Council

【 摘 要 】

The dinoflagellate Pyrocystis lunula emits light in response to water motion. The statistical features of the bioluminescence, emitted by P. lunula, owing to shear stress in oscillatory boundary layer flows over ripped bed were studied in this paper with the aim to develop a new imaging technique for measuring fluid strain rate and shear using plankton that emit light in response to mechanical stimulation.The flash intensity has been found to correlate with fluid strain rate estimated from fluid velocity over ripples.Thus the instantaneous planar distribution of the fluid shear can be estimated from video images of the bioluminescence in a fluid region by using the empirical relation determined in this study.

【 授权许可】

Unknown