Numerical simulation of the nanofluid flow and heat transfer in porous microchannels with different flow path arrangements using single-phase and two-phase models
Background: The fluid flow and nanofluid heat transfer are studied in this research through porous microchannels with different flow path arrangements in single-phase and two-phase modes (Mode I and Mode II). In Mode I, the flow inlet is located in the longitudinal direction of the microchannel (sin...
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Elsevier
2024-11-01
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| Series: | International Journal of Thermofluids |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2666202724002878 |
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| author | Farnaz Sanei Ali B. M․ Ali Dheyaa J. Jasim Soheil Salahshour Omid Ali Akbari Nafiseh Emami |
| author_facet | Farnaz Sanei Ali B. M․ Ali Dheyaa J. Jasim Soheil Salahshour Omid Ali Akbari Nafiseh Emami |
| author_sort | Farnaz Sanei |
| collection | DOAJ |
| description | Background: The fluid flow and nanofluid heat transfer are studied in this research through porous microchannels with different flow path arrangements in single-phase and two-phase modes (Mode I and Mode II). In Mode I, the flow inlet is located in the longitudinal direction of the microchannel (single-way path), while in Mode II, the flow inlet is placed in the transverse direction of the microchannel (two-way path). Methods: The finite volume method was utilized to simulate the flow and heat transfer. The porous medium is supposed homogeneous and isotropic with a porosity coefficient of 0.9 and it is assumed that the local thermal equilibrium is established between the fluid and the solid. The Eulerian-Eulerian mixture model is applied for modeling the two-phase flow. As demonstrated, mode II always has a higher heat transfer rate than mode I. However, in contrast, the pressure drop of mode I is lower than in mode II. Besides, using the two-phase model predicts a higher heat transfer rate than the single-phase model in all cases. Significant Findings: The percent increase of pressure in mode II compared to mode I in Re= 100 and 400 is obtained as 11.5 % and 20.8 %, respectively. At Re= 100 in mode I, the heat transfer percentage increases by 52.6 % from Da=1 compared to a case without the porous foam. Whilst, at Re= 400, the rise is found to be 45.5 %. In mode II, at Re=100, the heat transfer percentage increases by 63.9 % from Da= 1 compared to a case without the porous foam. Whilst, at Re= 400, the rise is found to be 43.3 %. Finally, Mode II microchannel has more heat transfer rate and pressure drop than Mode I. |
| format | Article |
| id | doaj-art-7f760eb22aa2431d824e3dbae9aeb21e |
| institution | OA Journals |
| issn | 2666-2027 |
| language | English |
| publishDate | 2024-11-01 |
| publisher | Elsevier |
| record_format | Article |
| series | International Journal of Thermofluids |
| spelling | doaj-art-7f760eb22aa2431d824e3dbae9aeb21e2025-08-20T02:38:13ZengElsevierInternational Journal of Thermofluids2666-20272024-11-012410084610.1016/j.ijft.2024.100846Numerical simulation of the nanofluid flow and heat transfer in porous microchannels with different flow path arrangements using single-phase and two-phase modelsFarnaz Sanei0Ali B. M․ Ali1Dheyaa J. Jasim2Soheil Salahshour3Omid Ali Akbari4Nafiseh Emami5Department of Mechanical Engineering, Khomeinishahr Branch, Islamic Azad University, Khomeinishahr, IranAir Conditioning Engineering Department, College of Engineering, University of Warith Al-Anbiyaa, Karbala, IraqDepartment of Petroleum Engineering, Al-Amarah University College, Maysan, IraqFaculty of Engineering and Natural Sciences, Istanbul Okan University, Istanbul, Turkey; Faculty of Engineering and Natural Sciences, Bahcesehir University, Istanbul, TurkeyDepartment of Mechanical Engineering, Faculty of Engineering, Arak University, Arak 38156-88349, IranDepartment of Chemical Engineering, Faculty of Engineering, Isfahan University, Isfahan, Iran; Corresponding author.Background: The fluid flow and nanofluid heat transfer are studied in this research through porous microchannels with different flow path arrangements in single-phase and two-phase modes (Mode I and Mode II). In Mode I, the flow inlet is located in the longitudinal direction of the microchannel (single-way path), while in Mode II, the flow inlet is placed in the transverse direction of the microchannel (two-way path). Methods: The finite volume method was utilized to simulate the flow and heat transfer. The porous medium is supposed homogeneous and isotropic with a porosity coefficient of 0.9 and it is assumed that the local thermal equilibrium is established between the fluid and the solid. The Eulerian-Eulerian mixture model is applied for modeling the two-phase flow. As demonstrated, mode II always has a higher heat transfer rate than mode I. However, in contrast, the pressure drop of mode I is lower than in mode II. Besides, using the two-phase model predicts a higher heat transfer rate than the single-phase model in all cases. Significant Findings: The percent increase of pressure in mode II compared to mode I in Re= 100 and 400 is obtained as 11.5 % and 20.8 %, respectively. At Re= 100 in mode I, the heat transfer percentage increases by 52.6 % from Da=1 compared to a case without the porous foam. Whilst, at Re= 400, the rise is found to be 45.5 %. In mode II, at Re=100, the heat transfer percentage increases by 63.9 % from Da= 1 compared to a case without the porous foam. Whilst, at Re= 400, the rise is found to be 43.3 %. Finally, Mode II microchannel has more heat transfer rate and pressure drop than Mode I.http://www.sciencedirect.com/science/article/pii/S2666202724002878MicrochannelNanofluidSingle-phase modelTwo-phase modelPorous medium |
| spellingShingle | Farnaz Sanei Ali B. M․ Ali Dheyaa J. Jasim Soheil Salahshour Omid Ali Akbari Nafiseh Emami Numerical simulation of the nanofluid flow and heat transfer in porous microchannels with different flow path arrangements using single-phase and two-phase models International Journal of Thermofluids Microchannel Nanofluid Single-phase model Two-phase model Porous medium |
| title | Numerical simulation of the nanofluid flow and heat transfer in porous microchannels with different flow path arrangements using single-phase and two-phase models |
| title_full | Numerical simulation of the nanofluid flow and heat transfer in porous microchannels with different flow path arrangements using single-phase and two-phase models |
| title_fullStr | Numerical simulation of the nanofluid flow and heat transfer in porous microchannels with different flow path arrangements using single-phase and two-phase models |
| title_full_unstemmed | Numerical simulation of the nanofluid flow and heat transfer in porous microchannels with different flow path arrangements using single-phase and two-phase models |
| title_short | Numerical simulation of the nanofluid flow and heat transfer in porous microchannels with different flow path arrangements using single-phase and two-phase models |
| title_sort | numerical simulation of the nanofluid flow and heat transfer in porous microchannels with different flow path arrangements using single phase and two phase models |
| topic | Microchannel Nanofluid Single-phase model Two-phase model Porous medium |
| url | http://www.sciencedirect.com/science/article/pii/S2666202724002878 |
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