Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe Flow
Distribution and deposition of cylindrical nanoparticles in a turbulent pipe flow are investigated numerically. The equations of turbulent flow including the effect of particles are solved together with the mean equations of the particle number density and the probability density function for partic...
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| Format: | Article |
| Language: | English |
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MDPI AG
2021-01-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/11/3/962 |
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| author | Wenqian Lin Ruifang Shi Jianzhong Lin |
| author_facet | Wenqian Lin Ruifang Shi Jianzhong Lin |
| author_sort | Wenqian Lin |
| collection | DOAJ |
| description | Distribution and deposition of cylindrical nanoparticles in a turbulent pipe flow are investigated numerically. The equations of turbulent flow including the effect of particles are solved together with the mean equations of the particle number density and the probability density function for particle orientation including the combined effect of Brownian and turbulent diffusion. The results show that the distribution of the particle concentration on the cross-section becomes non-uniform along the flow direction, and the non-uniformity is reduced with the increases of the particle aspect ratio and Reynolds number. More and more particles will align with their major axis near to the flow direction, and this phenomenon becomes more obvious with increasing the particle aspect ratio and with decreasing the Reynolds number. The particles in the near-wall region are aligned with the flow direction obviously, and only a slight preferential orientation is observed in the vicinity of pipe’s center. The penetration efficiency of particle decreases with increasing the particle aspect ratio, Reynolds number and pipe length-to-diameter ratio. Finally, the relationship between the penetration efficiency of particle and related synthetic parameters is established based on the numerical data. |
| first_indexed | 2024-03-09T04:03:08Z |
| format | Article |
| id | doaj.art-0576a6ab04ca44099da7fa17a1c961e6 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-09T04:03:08Z |
| publishDate | 2021-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-0576a6ab04ca44099da7fa17a1c961e62023-12-03T14:10:01ZengMDPI AGApplied Sciences2076-34172021-01-0111396210.3390/app11030962Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe FlowWenqian Lin0Ruifang Shi1Jianzhong Lin2School of Media and Design, Hangzhou Dianzi University, Hangzhou 310018, ChinaState Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, ChinaState Key Laboratory of Fluid Power Transmission and Control, Zhejiang University, Hangzhou 310027, ChinaDistribution and deposition of cylindrical nanoparticles in a turbulent pipe flow are investigated numerically. The equations of turbulent flow including the effect of particles are solved together with the mean equations of the particle number density and the probability density function for particle orientation including the combined effect of Brownian and turbulent diffusion. The results show that the distribution of the particle concentration on the cross-section becomes non-uniform along the flow direction, and the non-uniformity is reduced with the increases of the particle aspect ratio and Reynolds number. More and more particles will align with their major axis near to the flow direction, and this phenomenon becomes more obvious with increasing the particle aspect ratio and with decreasing the Reynolds number. The particles in the near-wall region are aligned with the flow direction obviously, and only a slight preferential orientation is observed in the vicinity of pipe’s center. The penetration efficiency of particle decreases with increasing the particle aspect ratio, Reynolds number and pipe length-to-diameter ratio. Finally, the relationship between the penetration efficiency of particle and related synthetic parameters is established based on the numerical data.https://www.mdpi.com/2076-3417/11/3/962cylindrical nanoparticlesdistributiondepositionturbulent pipe flownumerical simulation |
| spellingShingle | Wenqian Lin Ruifang Shi Jianzhong Lin Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe Flow Applied Sciences cylindrical nanoparticles distribution deposition turbulent pipe flow numerical simulation |
| title | Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe Flow |
| title_full | Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe Flow |
| title_fullStr | Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe Flow |
| title_full_unstemmed | Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe Flow |
| title_short | Distribution and Deposition of Cylindrical Nanoparticles in a Turbulent Pipe Flow |
| title_sort | distribution and deposition of cylindrical nanoparticles in a turbulent pipe flow |
| topic | cylindrical nanoparticles distribution deposition turbulent pipe flow numerical simulation |
| url | https://www.mdpi.com/2076-3417/11/3/962 |
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