Thickness distribution and fluctuation characteristics of liquid falling film under turbulent conditions

Zeng, Jie; Wang, Yifei; Wei, Zongyao; Wang, Liang; Li, Tingting; Yu, Guangsuo

doi:10.1016/j.ces.2021.117172

Cited by 12 publications

(1 citation statement)

References 43 publications

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“…Disturbance waves play a dominant role in the mass, momentum, and energy transport of thin film flows such as falling film and annular two-phase flows [1,2]. Due to their stochastic nature, wave statistics such as wave height, frequency, and intermittency are used to characterize disturbance waves [3]. From these statistics, a deeper understanding of the flow structures can be realized.…”

Section: Introductionmentioning

confidence: 99%

Liquid film flow rate from measurements of disturbance wave characteristics for applications in thin film flow

Chan,

Morse,

Meissner

et al. 2024

Exp Fluids

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This paper discusses the development of a liquid-film thickness measurement technique using laser refractometry and the extension of this technique to enable the measurements of wave height, shape, frequency and velocity. The measurement technique is implemented in a falling water film facility for ease of method validation. The falling-film facility provides optical access to the film which allows the laser refractometry measurements to be compared to high-speed imaging of the waves directly. The total mass flow rate carried by the film (waves and base film) can be computed based on the laser refractometry measurement and compared to the actual liquid flow rate in the falling film facility in order to validate the technique without the complication of droplet entrainment that is typical in annular flow.

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Section: Introductionmentioning

confidence: 99%