Flow and Heat Transfer Characteristics of Falling Film on the Vibration Plate

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Abstract In order to enhance the heat transfer of falling film of the plate, the coupling technology of VOF and dynamic mesh is used, and the UDF function was made up, the model of the calculation of flow and heat transfer of the falling film on the vibration plate was established. As for considering the effects of surface tension and contact angle of wall to flow of liquid film, heat transfer of the falling film affected by different parameters was studied and analyzed. The results show that vibration makes the liquid film fluctuate violently and enhances the heat and mass transfer of the liquid film. What's more, with the increase of amplitude and frequency, heat transfer of the liquid film is improved. When the frequency and amplitude increase simultaneously, the heat transfer effect is enhanced obviously. Within the parameters of the study, when frequency f=50 Hz and amplitude A=2.0 mm, the heat transfer is 27% higher than that of the non-vibrating plate falling film.

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	Articles by authors
	Yang Li
	Jiang Bin

Keywords： dynamic mesh； vibration； numerical simulation； heat transfer

Received 2018-05-06;

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Yang Li, Jiang Bin.Flow and Heat Transfer Characteristics of Falling Film on the Vibration Plate[J] Chemcial Industry and Engineering, 2019,V36(4): 58-61

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