Modeling the influence of external heat flux on thermal characteristics of the silica aerogel/paraffin in a cylindrical atomic duct
As the price of fuel rises and the environmental impact of greenhouse gases intensifies, a larger population is opting for alternative sources of sustainable energy. Currently, scientists are facing challenges in discovering an energy-saving method that is effective in diverse scenarios and is user-...
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| Format: | Article |
| Language: | English |
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Elsevier
2025-01-01
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| Series: | Case Studies in Thermal Engineering |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2214157X24016642 |
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| author | Lishan Geng Ali B.M. Ali Shahram Babadoust Anjan Kumar Barno Abdullaeva Rasha Abed Hussein Soheil Salahshour Sh Esmaeili |
| author_facet | Lishan Geng Ali B.M. Ali Shahram Babadoust Anjan Kumar Barno Abdullaeva Rasha Abed Hussein Soheil Salahshour Sh Esmaeili |
| author_sort | Lishan Geng |
| collection | DOAJ |
| description | As the price of fuel rises and the environmental impact of greenhouse gases intensifies, a larger population is opting for alternative sources of sustainable energy. Currently, scientists are facing challenges in discovering an energy-saving method that is effective in diverse scenarios and is user-friendly. Many individuals are interested in using materials that can transition between solid, liquid, and gas states. The objective was to use these materials for heat retention. Silica aerogels exhibit effective thermal regulation, regardless of whether the environment is hot or cold. Phase change materials are substances that store thermal energy effectively and play a crucial role in maintaining temperature stability. This research explored how external heat flux affected the behavior of a tube filled with silica aerogel and phase change materials. Additionally, we incorporated CuO nanoparticles to evaluate their impact on the system. The study utilized LAMMPS software to perform molecular dynamics simulations for this purpose. To achieve our goal, we evaluated various aspects of virtual structure, which can be influenced by factors, such as density, velocity, temperature profile, heat flux, thermal conductivity, and the duration of filling and emptying. The findings indicate that as external heat flux increased, maximum density decreased to 0.1364 atoms/ų. Conversely, thermal conductivity, maximum velocity, and temperature increase to 1.97 W/m·K, 0.0138 Å/fs, and 649 K, respectively. Also, with maximum external heat flux, charging time decreases to 5.94 ns, while discharge time is recorded at 8.56 ns. Increased external heat flux resulted in greater thermal energy transfer to the material, causing the atoms to vibrate more vigorously and collide more frequently. |
| format | Article |
| id | doaj-art-284d95cedfbf45dab21863c065e3ba0f |
| institution | Kabale University |
| issn | 2214-157X |
| language | English |
| publishDate | 2025-01-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Case Studies in Thermal Engineering |
| spelling | doaj-art-284d95cedfbf45dab21863c065e3ba0f2025-01-08T04:52:43ZengElsevierCase Studies in Thermal Engineering2214-157X2025-01-0165105633Modeling the influence of external heat flux on thermal characteristics of the silica aerogel/paraffin in a cylindrical atomic ductLishan Geng0Ali B.M. Ali1Shahram Babadoust2Anjan Kumar3Barno Abdullaeva4Rasha Abed Hussein5Soheil Salahshour6Sh Esmaeili7School of Energy and Intelligence Engineering, Henan University of Animal Husbandry and Economy, Zhengzhou, Henan, 450011, China; Corresponding author.Air Conditioning Engineering Department, College of Engineering, University of Warith Al-Anbiyaa, Karbala, IraqDepartment of Medical Biochemical Analysis, Cihan University-Erbil, Erbil, Kurdistan Region, IraqDepartment of Electronics and Communication Engineering, GLA UNIVERSITY, MATHURA, 281406, IndiaDepartment of Mathematics and Information Technologies, Vice-Rector for Scientific Affairs, Tashkent State Pedagogical University, Tashkent, UzbekistanDepartment of Dentistry, Al-Manara College for Medical Sciences, Amarah, Maysan, IraqFaculty of Engineering and Natural Sciences, Istanbul Okan University, Istanbul, Turkey; Faculty of Engineering and Natural Sciences, Bahcesehir University, Istanbul, Turkey; Faculty of Science and Letters, Piri Reis University, Tuzla, Istanbul, TurkeyFaculty of Physics, Semnan University, P.O. Box: 35195-363, Semnan, IranAs the price of fuel rises and the environmental impact of greenhouse gases intensifies, a larger population is opting for alternative sources of sustainable energy. Currently, scientists are facing challenges in discovering an energy-saving method that is effective in diverse scenarios and is user-friendly. Many individuals are interested in using materials that can transition between solid, liquid, and gas states. The objective was to use these materials for heat retention. Silica aerogels exhibit effective thermal regulation, regardless of whether the environment is hot or cold. Phase change materials are substances that store thermal energy effectively and play a crucial role in maintaining temperature stability. This research explored how external heat flux affected the behavior of a tube filled with silica aerogel and phase change materials. Additionally, we incorporated CuO nanoparticles to evaluate their impact on the system. The study utilized LAMMPS software to perform molecular dynamics simulations for this purpose. To achieve our goal, we evaluated various aspects of virtual structure, which can be influenced by factors, such as density, velocity, temperature profile, heat flux, thermal conductivity, and the duration of filling and emptying. The findings indicate that as external heat flux increased, maximum density decreased to 0.1364 atoms/ų. Conversely, thermal conductivity, maximum velocity, and temperature increase to 1.97 W/m·K, 0.0138 Å/fs, and 649 K, respectively. Also, with maximum external heat flux, charging time decreases to 5.94 ns, while discharge time is recorded at 8.56 ns. Increased external heat flux resulted in greater thermal energy transfer to the material, causing the atoms to vibrate more vigorously and collide more frequently.http://www.sciencedirect.com/science/article/pii/S2214157X24016642Phase change materialsSilica aerogelNanocompositeNanoparticlesMolecular dynamics simulationHeat flux |
| spellingShingle | Lishan Geng Ali B.M. Ali Shahram Babadoust Anjan Kumar Barno Abdullaeva Rasha Abed Hussein Soheil Salahshour Sh Esmaeili Modeling the influence of external heat flux on thermal characteristics of the silica aerogel/paraffin in a cylindrical atomic duct Case Studies in Thermal Engineering Phase change materials Silica aerogel Nanocomposite Nanoparticles Molecular dynamics simulation Heat flux |
| title | Modeling the influence of external heat flux on thermal characteristics of the silica aerogel/paraffin in a cylindrical atomic duct |
| title_full | Modeling the influence of external heat flux on thermal characteristics of the silica aerogel/paraffin in a cylindrical atomic duct |
| title_fullStr | Modeling the influence of external heat flux on thermal characteristics of the silica aerogel/paraffin in a cylindrical atomic duct |
| title_full_unstemmed | Modeling the influence of external heat flux on thermal characteristics of the silica aerogel/paraffin in a cylindrical atomic duct |
| title_short | Modeling the influence of external heat flux on thermal characteristics of the silica aerogel/paraffin in a cylindrical atomic duct |
| title_sort | modeling the influence of external heat flux on thermal characteristics of the silica aerogel paraffin in a cylindrical atomic duct |
| topic | Phase change materials Silica aerogel Nanocomposite Nanoparticles Molecular dynamics simulation Heat flux |
| url | http://www.sciencedirect.com/science/article/pii/S2214157X24016642 |
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