Heat Transfer during Flow Boiling of Water in Short Microchannel with High Aspect Ratio

Shamirzaev, A. S.; Mordovskoi, A. S.; Kuznetsov, V. V.

doi:10.1134/s181023282102003x

Cited by 5 publications

(1 citation statement)

References 20 publications

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“…The trend of system miniaturization in various modern technologies sets new standards for the use of multiphase flows in microchannels [1,2]. The rectangular geometry of microchannels is currently widely used for technological applications: cooling systems [3,4], chemical reactors [5], etc. However, there is lack of research aimed at a detailed study of the gas-liquid flow characteristics [6][7][8], which are determinant in such processes.…”

Section: Introductionmentioning

confidence: 99%

Study of annular flow wave characteristics in a rectangular microchannel for gas-liquid flow with a viscous liquid

Bartkus,

Kuznetsov

2023

E3S Web Conf.

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The wave characteristics of annular gas-liquid flow in a microchannel with a rectangular cross-section were experimentally studied. Viscous silicone oil PMS 200 and nitrogen were used as liquid and gas phases. To form the required flow regime, a side T-shaped mixer was located at the microchannel inlet. High-speed visualization allowed to register waves at the gas-liquid interface, located in the meniscus region on the microchannel short side for the wide range of superficial gas velocities. The binarization of the flow images and their subsequent processing were performed using the Python program, which made it possible to measure the liquid layer thickness and the wave amplitude depending on the gas superficial velocity. The dependences of the average liquid layer thickness and the amplitude of the waves on Regas were obtained and compared with the wave characteristics for the flow of ethanol-nitrogen mixture.

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Section: Introductionmentioning

confidence: 99%

Study of annular flow wave characteristics in a rectangular microchannel for gas-liquid flow with a viscous liquid

Bartkus,

Kuznetsov

2023

E3S Web Conf.

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show abstract

Experimental study of the wave characteristics in annular gas-liquid flow along the wide side of a rectangular microchannel

Bartkus,

Kuznetsov

2024

E3S Web Conf.

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The characteristics of gas-liquid annular flow in a microchannel with a rectangular cross-section were experimentally studied for the flow of a mixture of viscous silicone oil PMS 200 - nitrogen. To form the required annular flow regime, a side T-mixer was used at the microchannel inlet. High-speed visualization allowed to register flow areas of menisci and waves at the gas-liquid interface, located on short and wide microchannel sides for the given range of superficial gas and liquid velocities Jgas=24.3-93.8 m/s, Jliq=0.01 m/s. The processing of the flow images was performed using the Python program and areas, which are covered by various size waves on the microchannel wide side between the menisci, were identified and summarized. The dependence of the dimensionless wave area on Regas was obtained and compared with the dynamics of liquid layer thickness for the flow of the PMS200-nitrogen mixture, which was obtained previously.

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Experimental study of interfacial mass transfer for the transition from slug to bubbly flow in a rectangular microchannel

Bartkus,

Filatov,

Bukatin

et al. 2024

Thermophys. Aeromech.

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Heat Transfer during Flow Boiling of Water in Short Microchannel with High Aspect Ratio

Cited by 5 publications

References 20 publications

Study of annular flow wave characteristics in a rectangular microchannel for gas-liquid flow with a viscous liquid

Study of annular flow wave characteristics in a rectangular microchannel for gas-liquid flow with a viscous liquid

Experimental study of the wave characteristics in annular gas-liquid flow along the wide side of a rectangular microchannel

Experimental study of interfacial mass transfer for the transition from slug to bubbly flow in a rectangular microchannel

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