Experimental Study on Surface Wave Characteristics of Laminar Falling Films Along Vertical Plate

Journal of Chinese Society of Power Engineering ›› 2015, Vol. 35 ›› Issue (1) : 50-54.

Engineering Thermophysics

LIU Mei¹, WANG Songling², LI Xiaoen², WU Zhengren²

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Abstract

Spatial and temporal characteristics of the surface wave on laminar falling films along vertical plate were analyzed in a self-developed experimental setup. The shape pattern, velocity and frequency of the surface wave were studied using CCD shadowgraph method in the range 600-1 300 for Re, and simultaneously statistical characteristics of the velocity and frequency were analyzed based on experimental measurements combined with Matlab image processing. Results show that both the velocity and the velocity range of solitary wave are directly proportional to the Re, but the frequency of solitary wave has weak dependence on the Re and the location of measurement. The frequency of solitary wave is found to be in the range of 7-13 Hz through Matlab processing.

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falling film / solitary wave / shadowgraph method / Matlab image processing

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LIU Mei, WANG Songling, LI Xiaoen, WU Zhengren. Experimental Study on Surface Wave Characteristics of Laminar Falling Films Along Vertical Plate. Journal of Chinese Society of Power Engineering. 2015, 35(1): 50-54

References

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2014-05-12	2015-01-15
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2015-01-15

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