Mechanism of Biofouling Control on Micro-structured Surface

Authors

Chunxi Li, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Education Ministry (North China Electric Power University), Baoding 071003, China;
Quanxi Xue, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Education Ministry (North China Electric Power University), Baoding 071003, China;
Zhang Shuo, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Education Ministry (North China Electric Power University), Baoding 071003, China;
Xuemin Ye, Key Lab of Condition Monitoring and Control for Power Plant Equipment of Education Ministry (North China Electric Power University), Baoding 071003, China;

Abstract

Abstract: Changing the wall microstructure geometry can improve the performance of surface antifouling and selfcleaning. A 3D numerical simulation of microfluidic in the near-wall region attached with microorganisms is performed with Fluent, and the kinetic and dynamic characteristics of fluid in the near- wall region are examined. The inherent mechanism of antifouling on microwell surfaces is discussed. Results reveal that streamwise vortices are formed in the microwells, thus the distinctly periodic fluctuations of velocity, strain rate and wall shear stress on microwell surfaces are exhibited, resulting in the interference on microorganisms migration and the harder adhesion of microorganisms to microridges. Additionally, microwell evolves a finite boundary and isolated region with high wall shear stress, which inhibits the aggregation and adhesion of microorganisms in the microwells. In this study, the microwell surface of in-line arrangement with microwell gap of 2 µm and microwell radius of 5 µm can produce larger fluctuation values of strain rate and wall shear stress and reduce the flow drag of the channels.

Recommended Citation

Li, Chunxi; Xue, Quanxi; Shuo, Zhang; and Ye, Xuemin (2019) "Mechanism of Biofouling Control on Micro-structured Surface," Journal of System Simulation: Vol. 30: Iss. 10, Article 37.
DOI: 10.16182/j.issn1004731x.joss.201810037
Available at: https://dc-china-simulation.researchcommons.org/journal/vol30/iss10/37

First Page

3903

Revised Date

2016-12-05

DOI Link

https://doi.org/10.16182/j.issn1004731x.joss.201810037

Last Page

3913

CLC

O35

Recommended Citation

Li Chunxi, Xue Quanxi, Zhang Shuo, Ye Xuemin. Mechanism of Biofouling Control on Micro-structured Surface[J]. Journal of System Simulation, 2018, 30(10): 3903-3913.

DOI

10.16182/j.issn1004731x.joss.201810037