Clarification on growth process of flow-induced gel and it's limitation

2023 Fiscal Year Final Research Report

• Project/Area Number: 20K14673
• Research Category: Grant-in-Aid for Early-Career Scientists
• Allocation Type: Multi-year Fund
• Review Section: Basic Section 19020:Thermal engineering-related
• Research Institution: Doshisha University
• Principal Investigator: Hara Shumpei 同志社大学, 理工学部, 准教授 (20844088)
• Project Period (FY): 2020-04-01 – 2024-03-31
• Keywords: ソフトマテリアル / 流動誘起ゲル / 相転移 / 開水路

Outline of Final Research Achievements

The present study experimentally investigated the temporal-spatial behavior of the flow-induced gel formed in the open-channel flow with surfactant solution dosing from the bottom wall. The formed flow-induced gel attached to the dosing wall grew to a size on the order of 10 cm. This was 100,000 times larger than the flow-induced gel reported in conventional microchannels. The flow-induced gel had a solid-like property and was tough to stop high-speed flow of the turbulent state.

Free Research Field

熱工学

Academic Significance and Societal Importance of the Research Achievements

本研究で明らかにした，開水路乱流に形成された流動誘起ゲルの時空間的挙動は，ゲルゾル相転移の理論構築のみならず，生体内でのソフトマテリアルの役割や機構といった造詣を深めることにも繋がる．また，その知見は，流動誘起ゲルを利用した流体バルブ，生体システムに倣った周期的に膨潤・収縮を繰り返す自励振動機能を持った材料といった新技術・次世代の新規高機能性材料の開発の一助にもなる．