Calculation of electro-osmotic flow development length in a rotating three-dimensional microchannel. (1st October 2022)

• Record Type: Journal Article
• Authors: Barimani, Manoochehr; Khaki Jamei, Mehran; Abbasi, Morteza
• Is Part Of: Fluid dynamics research. Volume 54:Number 5(2022)
• Publication Date: 2022-10-01
• Subjects: electro-osmotic flow -- rotating microchannel -- entrance region length -- numerical simulation -- OpenFOAM; Fluid dynamics -- Periodicals; 620.106
• DOI: 10.1088/1873-7005/ac9159
• Languages: English
• ISSNs: 0169-5983

Abstract

Abstract: The numerical modeling of an electroosmosis flow in a rectangular three-dimensional rotating microchannel has been studied. The study's goal is to calculate the flow's development length, and as a novelty, a correlation is proposed to estimate the development length. The flow was simulated for angular velocity ( ω ) ranges of 0–9 and electric potential ( φ ) ranges of 0.1–0.3. The results were imported into the curve fitting toolbox to determine a correlation for the development length. The correlation was obtained as a function of angular velocity, electric potential, and hydraulic diameter. The results show that increasing both ω and φ leads to an increase in flow development length, where for constant φ, increasing ω from 0 to 9 results in a 20%–30% increase in development length. Furthermore, increasing φ from 0.1 to 0.3 for a constant ω raises development length by 35%–50%. The velocity field and its parameters, such as ω and φ, were analyzed and discussed.