Please use this identifier to cite or link to this item:
http://hdl.handle.net/10397/93569
Title: | Bio-inspired patterned surface for submicron particle deposition in a fully developed turbulent duct | Authors: | Xu, H Fu, SC Chan, KC Qiu, H Chao, CYH |
Issue Date: | Oct-2020 | Source: | Building simulation, Oct. 2020, v. 13, no. 5, p. 1111-1123 | Abstract: | Arrays of surface ribs have been reported to significantly enhance particle collection efficiency in particle removal devices. However, the surface ribs also cause a higher pressure drop. Therefore, the overall performance needs to take into consideration the above factors. In this study, different forms of surface ribs inspired by nature were designed and parametric studies were performed to enhance deposition efficiency. Our parametric studies comprised three different aspects: geometry of the patterned surface, pitch-to-height ratio, and particle size. The flow field around patterned surfaces was simulated in a two-dimensional channel flow by using the Reynolds stress model, corrected by turbulence velocity fluctuation in the wall-normal direction. The particle trajectory was solved by using Lagrangian particle tracking. When the overall efficiency ratio was considered, a semi-circular pattern had the best overall efficiency with 1137 times increase when compared to the case without patterns. Although the open-circular pattern has the minimum particle deposition enhancement, the overall efficiency of the open-circular pattern has 862 times increase compared to the case without patterns. Surface ribs (semi-circular, triangular and rectangular) can achieve a higher particle deposition velocity, but a higher flow resistance is generated compared with applying the open-circular surface ribs. The deposition location was then investigated for different surface ribs at different pitch-to-height ratios (p/e). This study shows that the semi-circular surface pattern should be recommended to enhance the overall performance of particle removal devices, especially for submicron particles. | Keywords: | Bio-inspired Fully developed turbulent flow Particle deposition Submicron particles Surface rib array |
Publisher: | Tsinghua University Press, co-published with Springer | Journal: | Building simulation | ISSN: | 1996-3599 | DOI: | 10.1007/s12273-020-0681-7 | Rights: | © Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020 This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use (https://www.springernature.com/gp/open-research/policies/accepted-manuscript-terms), but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: http://dx.doi.org/10.1007/s12273-020-0681-7. |
Appears in Collections: | Journal/Magazine Article |
Files in This Item:
File | Description | Size | Format | |
---|---|---|---|---|
Xu_Bio-inspired_Patterned_Submicron.pdf | Pre-Published version | 2.43 MB | Adobe PDF | View/Open |
Page views
48
Last Week
0
0
Last month
Citations as of Apr 28, 2024
Downloads
56
Citations as of Apr 28, 2024
SCOPUSTM
Citations
2
Citations as of Apr 26, 2024
WEB OF SCIENCETM
Citations
2
Citations as of May 2, 2024
Google ScholarTM
Check
Altmetric
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.