プランクトンの運動と流れ(生物流体・生体流体(3),一般講演)

概要

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The behavior of planktons in a group is investigated by using tracking method. The plankton is a larva of an Artemia Salina with 1mm in body length that is called brine-shrimp commercially. It moves by flapping motion of a pair of arms. We observed its motion mechanism at low Reynolds number and behavior in a swarm with different population density. These are basic data to design a micro robot. The interactions among them were investigated by a micro PIV system to observe vortices around them and motion of their arms. In the case of one, two vortex pairs that had different rotational direction were observed during the power stroke phase in the flapping motion. In the case of two, flow pattern between them was complex became of the interaction. The direction of motion after contact was determined by arm motion close to the other.
日本流体力学会の論文
2007-08-06