Statistical Mechanical Study on Transport Phenomena of Weak Turbulence Using Nematic Electroconvection

2017 Fiscal Year Final Research Report

• Project/Area Number: 15K05799
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Fluid engineering
• Research Institution: Kyushu University
• Principal Investigator: HIDAKA Yoshiki 九州大学, 工学研究院, 助教 (70274511)
• Co-Investigator(Renkei-kenkyūsha): NARUMI Takayuki 山口大学, 大学院創成科学研究科, 講師 (50599644)
• Project Period (FY): 2015-04-01 – 2018-03-31
• Keywords: 弱い乱流 / ソフトモード乱流 / 欠陥乱流 / 非熱的揺動 / カオス誘起摩擦 / 時間依存拡散係数 / 優拡散 / 劣拡散

Outline of Final Research Achievements

Physical properties of transport phenomenon of the weak turbulence in electroconvection of nematic liquid crystals have been studied. The weak turbulence occurs by the interaction between convective flow and nematic director. The statistical mechanical method such as external force response, correlation function, and Brownian motion were used to investigate the properties. As a result, the fluctuations due to the nonlinear interaction of multiple modes showed unique properties different from the thermal fluctuation targeted by the statistical mechanics so far. In addition, it was revealed that the transport phenomena change qualitatively depending on the observation scale, reflecting the coexistence of local order and global disorder in the weak turbulence.

Free Research Field

非線形物理学