基于Voronoi-Random算法微观结构褶型过滤介质过滤性能

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Abstract When using numerical simulation to study the filtration performance of pleated fiber filter media, in order to overcome the shortcomings of discontinuous layers and regular distribution of porous fibers, a pleated fiber filter media model was established based on Voronoi-Random algorithm, and its solid volume fraction (SVF) was changed by encrypting or reducing the number of fibers. Two collision models "Caught on first touch" and "Hamker" were used to simulate the gas-solid two-phase flow of pleated fiber filter media. The results show that the numerical values of pressure loss and filtration efficiency were in good agreement with those calculated by empirical correlation, and the error was within 15%; Comparing the filtration efficiency obtained by two collision models of "Caught on first touch" and "Hamker" with the calculated value of empirical correlation, it was concluded that the filtering efficiency obtained by "Hamker" collision model accords with the reality; The particles deposited on the filter media were not completely captured by fibers, but most of them were captured by dendritic structures formed; The pressure drop and deposition per unit area increased exponentially with the increase of filtration time.

Key words： Voronoi-Random algorithm pleated fiber filter media filtration performance numerical simulation

Received: 27 March 2023

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X513

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	XU Yan
	CHENG Si-min
	SUN Yi
	CAO Bo-wen
	QIAN Fu-ping
	LU Jin-li
	HAN Yun-long

Cite this article:

XU Yan,CHENG Si-min,SUN Yi等. Filtration performance of microstructure pleated filter media based on Voronoi-Random algorithm[J]. CHINA ENVIRONMENTAL SCIENCECE, 2023, 43(10): 5488-5497.

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http://www.zghjkx.com.cn/EN/ OR http://www.zghjkx.com.cn/EN/Y2023/V43/I10/5488

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