Analysis of the formation mechanism of the hierarchical flow structure in biofluid mechanics

2016 Fiscal Year Final Research Report

• Project/Area Number: 26400396
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Mathematical physics/Fundamental condensed matter physics
• Research Institution: Hiroshima University
• Principal Investigator: Iima Makoto 広島大学, 理学研究科, 准教授 (90312412)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 生物対流

Outline of Final Research Achievements

We investigated the relationship between information processing of Euglena and the hierarchical flow structure caused by individuals and their collective motion. A number density flux was suggested proportional to the intensity of the optical gradient. This result was incorporated to construct a model equation of localized bioconvection. This equation reproduces the localized bioconvection as well as the bistability of the state, which is suggested by the experiments. For flapping flight, we developed a method to describe the behavior of separation vortices in a low-dimensional dynamical system by using the single vortex approximation.

Free Research Field

流体物理学