双稳态
微流控
流量(数学)
磁滞
机械
材料科学
纳米技术
物理
光电子学
量子力学
作者
Lin Sheng,Shaowei Li,Kai Wang,Yu Chang,Jian Deng,Guangsheng Luo
标识
DOI:10.1021/acs.iecr.2c03640
摘要
Generating gas–liquid Taylor flow is the prerequisite for the application of gas–liquid microfluidics. However, a suitable operating method for gas–liquid microfluidics has yet to be reported. Due to the different operating methods, this work finds a novel phenomenon of the strong hysteresis of the flow state transformation between parallel flow and Taylor flow in gas–liquid microfluidics. Three different flow regions are defined: parallel flow region, bistable region, and Taylor flow region. Importantly, the hysteresis phenomenon in the bistable region could be the first time reported in gas–liquid microfluidics. Results show that the flow state in the bistable region under given operating parameters strongly depends on the system's initial state, and the hydrodynamics of parallel flow and Taylor flow under the bistable region is controlled by kinetic energy and interfacial energy, respectively. The phenomenon reminds researchers to follow a suitable operating method for gas–liquid microfluidics.
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