Molecular Dynamics Simulation of Nanoscale Channel Flows with Rough Wall Using the Virtual-Wall Model
Molecular dynamics simulation is adopted in the present study to investigate the nanoscale gas flow characteristics in rough channels. The virtual-wall model for the rough wall is proposed and validated. The computational efficiency can be improved greatly by using this model, especially for the low...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2018-01-01
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| Series: | Journal of Nanotechnology |
| Online Access: | http://dx.doi.org/10.1155/2018/4631253 |
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| _version_ | 1832561695530156032 |
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| author | Xiaohui Lin Fu-bing Bao Xiaoyan Gao Jiemin Chen |
| author_facet | Xiaohui Lin Fu-bing Bao Xiaoyan Gao Jiemin Chen |
| author_sort | Xiaohui Lin |
| collection | DOAJ |
| description | Molecular dynamics simulation is adopted in the present study to investigate the nanoscale gas flow characteristics in rough channels. The virtual-wall model for the rough wall is proposed and validated. The computational efficiency can be improved greatly by using this model, especially for the low-density gas flow in nanoscale channels. The effect of roughness element geometry on flow behaviors is then studied in detail. The fluid velocity decreases with the increase of roughness element height, while it increases with the increases of element width and spacing. |
| format | Article |
| id | doaj-art-3542d27980c743ffb2f88fcb8161cfa6 |
| institution | Kabale University |
| issn | 1687-9503 1687-9511 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Journal of Nanotechnology |
| spelling | doaj-art-3542d27980c743ffb2f88fcb8161cfa62025-02-03T01:24:26ZengWileyJournal of Nanotechnology1687-95031687-95112018-01-01201810.1155/2018/46312534631253Molecular Dynamics Simulation of Nanoscale Channel Flows with Rough Wall Using the Virtual-Wall ModelXiaohui Lin0Fu-bing Bao1Xiaoyan Gao2Jiemin Chen3Institute of Fluid Measurement and Simulation, China Jiliang University, Hangzhou, 310018, ChinaInstitute of Fluid Measurement and Simulation, China Jiliang University, Hangzhou, 310018, ChinaInstitute of Fluid Measurement and Simulation, China Jiliang University, Hangzhou, 310018, ChinaInstitute of Fluid Measurement and Simulation, China Jiliang University, Hangzhou, 310018, ChinaMolecular dynamics simulation is adopted in the present study to investigate the nanoscale gas flow characteristics in rough channels. The virtual-wall model for the rough wall is proposed and validated. The computational efficiency can be improved greatly by using this model, especially for the low-density gas flow in nanoscale channels. The effect of roughness element geometry on flow behaviors is then studied in detail. The fluid velocity decreases with the increase of roughness element height, while it increases with the increases of element width and spacing.http://dx.doi.org/10.1155/2018/4631253 |
| spellingShingle | Xiaohui Lin Fu-bing Bao Xiaoyan Gao Jiemin Chen Molecular Dynamics Simulation of Nanoscale Channel Flows with Rough Wall Using the Virtual-Wall Model Journal of Nanotechnology |
| title | Molecular Dynamics Simulation of Nanoscale Channel Flows with Rough Wall Using the Virtual-Wall Model |
| title_full | Molecular Dynamics Simulation of Nanoscale Channel Flows with Rough Wall Using the Virtual-Wall Model |
| title_fullStr | Molecular Dynamics Simulation of Nanoscale Channel Flows with Rough Wall Using the Virtual-Wall Model |
| title_full_unstemmed | Molecular Dynamics Simulation of Nanoscale Channel Flows with Rough Wall Using the Virtual-Wall Model |
| title_short | Molecular Dynamics Simulation of Nanoscale Channel Flows with Rough Wall Using the Virtual-Wall Model |
| title_sort | molecular dynamics simulation of nanoscale channel flows with rough wall using the virtual wall model |
| url | http://dx.doi.org/10.1155/2018/4631253 |
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