Investigation on flow properties of complex fluids in micron- and nano-sized flows

2016 Fiscal Year Final Research Report

• Project/Area Number: 26820041
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Fluid engineering
• Research Institution: Niigata University
• Principal Investigator: USHIDA Akiomi 新潟大学, 自然科学系, 助教 (10582976)
• Research Collaborator: NARUMI Takatsune 新潟大学, 自然科学系, 教授 ; HASEGAWA Tomiichi 新潟工業短期大学, 学長
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 微小孔 / 圧力損失 / 水 / 界面活性剤水溶液 / 高分子水溶液

Outline of Final Research Achievements

In the study, we measured pressure drops with constant flow rate passing through micro-orifices, which characteristic length was less than 100 micron meters because flow properties of complex fluids in flows through micro-apertures were investigated. For water flows, the experimental results were less than the predicted values of the Navier-Stokes equation. For spherical micelle surfactant solutions (1.0 wt %), different flow properties were found for the various surfactant solutions depending on the charge of the solute. For rod-like micelle surfactant solutions, the resultant pressure drops were larger for molar concentration ratios of 1.0.

Free Research Field

流体工学