Experimental study on flow characteristics of rectangular narrow channel

Song, Gongle; Sun, Rulei; Zhang, Dalin; Su, G.H.; Tian, Wenxi; Qiu, Suizheng

doi:10.1016/j.jandt.2020.09.002

Cited by 11 publications

(3 citation statements)

References 31 publications

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“…The head losses and pressure drop for forward/reverse flow are evaluated. The normalized friction constant C* as function of Reynold number, expressed by Equation ( 26) is used to calculate the discrepancy between the experimental and predicted values of the friction coefficient in the laminar region [96,98,107] C * = (f.Re) experimental (f.Re) predicted (26)…”

Section: Simulation and Their Boundary Conditionmentioning

confidence: 99%

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Finger-Actuated Micropump of Constant Flow Rate without Backflow

et al. 2023

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This paper presents a finger-actuated micropump with a consistent flow rate and no backflow. The fluid dynamics in interstitial fluid (ISF) extraction microfluidics are studied through analytical, simulation, and experimental methods. Head losses, pressure drop, diodocity, hydrogel swelling, criteria for hydrogel absorption, and consistency flow rate are examined in order to access microfluidic performance. In terms of consistency, the experimental result revealed that after 20 s of duty cycles with full deformation on the flexible diaphragm, the output pressure became uniform and the flow rate remained at nearly constant levels of 2.2 μL/min. The flow rate discrepancy between the experimental and predicted flow rates is around 22%. In terms of diodicity, when the serpentine microchannel and hydrogel-assisted reservoir are added to the microfluidic system integration, the diodicity increases by 2% (Di = 1.48) and 34% (Di = 1.96), respectively, compared to when the Tesla integration (Di = 1.45) is used alone. A visual and experimentally weighted analysis finds no signs of backflow. These significant flow characteristics demonstrate their potential usage in many low-cost and portable microfluidic applications.

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Section: Simulation and Their Boundary Conditionmentioning

confidence: 99%

“…Song [96] f = 0.8227 Re 0.42 ; Re ≤ 2700 f = 0.0352 Re 0.0211 ; 2700 ≤ Re ≤ 4000 f = 0.07019 Re 0.10498 ; Re ≥ 4000 (37)…”

Section: First Authormentioning

confidence: 99%