Investigating the effect of the number of layers of the atomic channel wall on Brownian displacement, thermophoresis, and thermal behavior of graphene/water nanofluid by molecular dynamics simulation
Nanofluids (NFs) are nanoscale colloidal suspensions containing dense nanomaterials. They are two-phase systems with solid in liquid phase. Due to their high thermal conductivity, nanoparticles increase the thermal conductivity (TC) of base fluids, one of the basic heat transfer parameters, when dis...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-01-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X23011656 |
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| author | Xinwei Guo Dheyaa J. Jasim As'ad Alizadeh Babak Keivani Navid Nasajpour-Esfahani Soheil Salahshour Mahmoud Shamsborhan Rozbeh Sabetvand |
| author_facet | Xinwei Guo Dheyaa J. Jasim As'ad Alizadeh Babak Keivani Navid Nasajpour-Esfahani Soheil Salahshour Mahmoud Shamsborhan Rozbeh Sabetvand |
| author_sort | Xinwei Guo |
| collection | DOAJ |
| description | Nanofluids (NFs) are nanoscale colloidal suspensions containing dense nanomaterials. They are two-phase systems with solid in liquid phase. Due to their high thermal conductivity, nanoparticles increase the thermal conductivity (TC) of base fluids, one of the basic heat transfer parameters, when distributed in the base fluids. The present research investigates the thermal behavior, Brownian motion, and thermophoresis of water/graphene NF affected by different numbers of atomic wall layers (4, 5, 6 and 7) by molecular dynamics (MD) simulation. This investigation reports changes in heat flux (HF), TC, average Brownian displacement, and thermophoresis displacement. By raising the number of atomic wall layers from 4 to 7, the average Brownian displacement and thermophoresis displacement increase from 3.06 Å and 23.88 Å to 3.62 and 25.05 Å, respectively. Increasing the number of layers due to the decrease in temperature increases the temperature difference between the hot and cold points along the channel. It increases the Brownian motion and the maximum temperature. Additionally, by raising the atomic layers of the channel wall, the values of HF and TC increase from 39.54 W/m2 and 0.36 W/mK to 41.18 W/m2 and 0.42 W/mK after 10 ns, respectively. The temperature rose from 1415 to 1538 K. These results are useful in different industries, especially for improving the thermal properties of different NFs. |
| first_indexed | 2024-03-08T14:35:55Z |
| format | Article |
| id | doaj.art-180cdf2b3b28478b8d074a95083fb338 |
| institution | Directory Open Access Journal |
| issn | 2214-157X |
| language | English |
| last_indexed | 2024-03-08T14:35:55Z |
| publishDate | 2024-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj.art-180cdf2b3b28478b8d074a95083fb3382024-01-12T04:56:42ZengElsevierCase Studies in Thermal Engineering2214-157X2024-01-0153103859Investigating the effect of the number of layers of the atomic channel wall on Brownian displacement, thermophoresis, and thermal behavior of graphene/water nanofluid by molecular dynamics simulationXinwei Guo0Dheyaa J. Jasim1As'ad Alizadeh2Babak Keivani3Navid Nasajpour-Esfahani4Soheil Salahshour5Mahmoud Shamsborhan6Rozbeh Sabetvand7Ural Institute, North China University of Water Resource and Electric Power, Zhengzhou, Henan, 450045, China; Institute of Thermal Energy Engineering, School of Mechanical Engineering, Shanghai Jiao Tong University, Shanghai, 200240, China; Corresponding author. Ural Institute, North China University of Water Resource and Electric Power, Zhengzhou, Henan, 450045, China.Department of Petroleum Engineering, Al-Amarah University College, Maysan, IraqDepartment of Civil Engineering, College of Engineering, Cihan University-Erbil, Erbil, IraqKırşehir Ahi Evran University, Department of Mechanical Engineering, 40200, Merkez, Kırşehir, TurkeyDepartment of Material Science and Engineering, Georgia Institute of Technology, Atlanta, 30332, USAFaculty of Engineering and Natural Sciences, Istanbul Okan University, Istanbul, Turkey; Faculty of Engineering and Natural Sciences, Bahcesehir University, Istanbul, Turkey; Department of Computer Science and Mathematics, Lebanese American University, Beirut, LebanonDepartment of Mechanical Engineering, College of Engineering, University of Zakho, Zakho, IraqDepartment of Energy Engineering and Physics, Faculty of Condensed Matter Physics, Amirkabir University of Technology, Tehran, Iran; Corresponding author.Nanofluids (NFs) are nanoscale colloidal suspensions containing dense nanomaterials. They are two-phase systems with solid in liquid phase. Due to their high thermal conductivity, nanoparticles increase the thermal conductivity (TC) of base fluids, one of the basic heat transfer parameters, when distributed in the base fluids. The present research investigates the thermal behavior, Brownian motion, and thermophoresis of water/graphene NF affected by different numbers of atomic wall layers (4, 5, 6 and 7) by molecular dynamics (MD) simulation. This investigation reports changes in heat flux (HF), TC, average Brownian displacement, and thermophoresis displacement. By raising the number of atomic wall layers from 4 to 7, the average Brownian displacement and thermophoresis displacement increase from 3.06 Å and 23.88 Å to 3.62 and 25.05 Å, respectively. Increasing the number of layers due to the decrease in temperature increases the temperature difference between the hot and cold points along the channel. It increases the Brownian motion and the maximum temperature. Additionally, by raising the atomic layers of the channel wall, the values of HF and TC increase from 39.54 W/m2 and 0.36 W/mK to 41.18 W/m2 and 0.42 W/mK after 10 ns, respectively. The temperature rose from 1415 to 1538 K. These results are useful in different industries, especially for improving the thermal properties of different NFs.http://www.sciencedirect.com/science/article/pii/S2214157X23011656Brownian displacementThermophoresisThermal behaviorMolecular dynamics simulationGraphene/ water nanofluid |
| spellingShingle | Xinwei Guo Dheyaa J. Jasim As'ad Alizadeh Babak Keivani Navid Nasajpour-Esfahani Soheil Salahshour Mahmoud Shamsborhan Rozbeh Sabetvand Investigating the effect of the number of layers of the atomic channel wall on Brownian displacement, thermophoresis, and thermal behavior of graphene/water nanofluid by molecular dynamics simulation Case Studies in Thermal Engineering Brownian displacement Thermophoresis Thermal behavior Molecular dynamics simulation Graphene/ water nanofluid |
| title | Investigating the effect of the number of layers of the atomic channel wall on Brownian displacement, thermophoresis, and thermal behavior of graphene/water nanofluid by molecular dynamics simulation |
| title_full | Investigating the effect of the number of layers of the atomic channel wall on Brownian displacement, thermophoresis, and thermal behavior of graphene/water nanofluid by molecular dynamics simulation |
| title_fullStr | Investigating the effect of the number of layers of the atomic channel wall on Brownian displacement, thermophoresis, and thermal behavior of graphene/water nanofluid by molecular dynamics simulation |
| title_full_unstemmed | Investigating the effect of the number of layers of the atomic channel wall on Brownian displacement, thermophoresis, and thermal behavior of graphene/water nanofluid by molecular dynamics simulation |
| title_short | Investigating the effect of the number of layers of the atomic channel wall on Brownian displacement, thermophoresis, and thermal behavior of graphene/water nanofluid by molecular dynamics simulation |
| title_sort | investigating the effect of the number of layers of the atomic channel wall on brownian displacement thermophoresis and thermal behavior of graphene water nanofluid by molecular dynamics simulation |
| topic | Brownian displacement Thermophoresis Thermal behavior Molecular dynamics simulation Graphene/ water nanofluid |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X23011656 |
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